XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
May 29, 2003 Ver 4
! Applications
# PDAs
# Palm Top Computers
# Portable Audio Systems
# Various Multi-function Power Supplies
" 2ch DC/DC Controller (Step-Down + Inverting)
" Input Voltage Range 2.0V ~ 10.0V
" Output Voltage Externally Set-Up
" Oscillation Frequency 180kHz (±15%)
" Max Duty Ratio
Step-Down : 100%
Inverting : 80% (Typ.)
" PWM, PWM/PFM Switching Control
" MSOP-10 Package
! Features
2ch. DC/DC Controllers
Output 1: Step-Down DC/DC Controller
Output 2: Inverting DC/DC Controller
Power Supply Voltage Range 2.0V ~ 10V
Output Voltage Range
Output 1:
0.9V ~ 6.0V
! General Description
The XC9505 series are PWM control, PWM/PFM switching, 2
channel (step-down and inverting) DC/DC controller ICs.
With 0.9V of standard voltage supply internal, and using
externally connected components, the output 1 voltage (stepdown DC/DC controller) can be set freely within a range of 0.9V
~ 6.0V. Since output 2 (inverting DC/DC controller) has a
built-in 0.9V reference voltage (accuracy ±2), a negative voltage
can be set with the external components.
With a 180kHz frequency, the size of the external components
can be reduced. Switching frequencies of 300kHz and 500kHz
are also available as custom-designed products.
The control of the XC9505 series can be switched between
PWM control and PWM/PFM automatic switching control using
external signals. Control switches from PWM to PFM during
light loads when automatic switching is selected and the series
is highly efficient from light loads through to large output
currents. Noise is easily reduced with PWM control since the
frequency is fixed.
The series gives freedom of control selection so that control
suited to the application can be selected.
Soft-start time is internally set to 10msec (output 1)
(Step-Down DC/DC Controller) Can be set freely with 0.9V(±
2.0%) of reference voltage
supply & external components
Output 2:
-30V ~ 0V
Can be set freely with 0.9V(±
2.0%) of reference voltage &
external components
(Inverting DC/DC Controller)
Oscillation Frequency
180kHz ±15%
300kHz & 500kHz are available as custom
Output Current
Output 1 : more than 1000mA (VIN=5.0V,VOUT=3.3V)
Output 2 : more than - 100mA (VIN=5.0V,VOUT=- 7.5V)
Soft-Start Internally Set-Up (Output 1)
Stand-By Current
3.0µA (MAX)
! Typical Perfomance Characteristics
XC9505B092A (180kHz,VOUT1:3.3V,VOUT2:-7.5V)
Efficiency 1,2 EFFI1,2 (%)
Tr1,Tr2:XP162A12A6P, CL1, CL2=92uF(Tantalum),SD1:CMS02
SD2:MA2Q737,L1=47uH(CDRH6D28),L2=22uH(CDRH5D28)
which offers protection against rush currents and voltage
overshoot when the power is switched on .
100
90
80
70
60
50
40
30
20
10
0
PWM/PFM Switching Control
VOUT2:-7.5V
VOUT1:3.3V
PWM Control
VIN=5.0V
0.1
1
10
100
Output Current 1,2 I OUT1,2 (mA)
! Typical Application
( XC9505B092A
Input: 2 Cell, Output 1: 3.3V, Output 2: -7.5V )
L1:22uH
CDRH5D28
V OUT1 : 3 . 3 V
Tr2:Pch M OSFET
X P162A 12A 6P
Tr1:Pch M OSFET
X P 162A12A6P
L2:22uH
CDRH5D28
RF B 1 1
:2 00k Ω
CF B 1
:62pF
1 EX T 1/
2 VDD
V OUT2 :-7.5V
CIN
:47uF
V IN
=5.0V
SD1
:M A2Q737
SD2
:M A2Q737
CL 2 :47uF
RF B 2 1
:150 kΩ
E XT 2/10
GND 9
CL 1 :47uF
3 FB 1
VPWM 1
RF B 1 2
: 75k Ω
V EN 1
4 PW M1
5 EN1
FB2 8
VPWM 2
P W M2 7
V EN 2
E N2 6
1
RF B 2 2
:43 kΩ
CF B 1
:88pF
1000
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Pin Configuration
1 EXT1
EXT2 10
2 VDD
GND 9
3 FB1
FB2 8
4 PW M1
5 CE1
EN1
PW M2 7
CE2 6
EN2
MSOP-10
(TOP VIEW)
Pin Assignment
PIN NUMBER
PIN NAME
FUNCTIONS
1
EXT 1
2
VDD
Supply Voltage
3
FB1
Channel 1 : Output Voltage Monitor Feedback Pin <Threshold value : 0.9V. Output voltage
can be set freely by connecting split resistors between VOUT1 and Ground.>
4
PWM1
Channel 1 : PWM/PFM Switching Pin <Control Output 1. PWM control when connected to
VDD, PWM / PFM auto switching when connected to Ground. >
5
EN1
Channel 1 : Enable Pin <Connected to Ground when Output 1 is in stand-by mode.
Connected to VDD when Output 1 is active. EXT1 is high when in stand-by mode.>
6
EN2
Channel 2 : Enable Pin <Connected to Ground when Output 2 is in stand-by mode.
Connected to VDD when Output 2 is active. EXT2/ is high when in stand-by mode.>
7
PWM2
Channel 2 : PWM/PFM Switching Pin <Control Output 2. PWM control when connected to
VDD, PWM / PFM auto switching when connected to Ground.>
8
FB2
Channel 2 : Output Voltage Monitor Feedback Pin <Threshold value : 0.9V. Output voltage
can be set freely by connecting split resistors between VOUT2 and VOUT1.>
9
GND
Ground
10
EXT2/
Channel 2 : External Transistor Drive Pin <Connected to Pch Power MOSFET Gate>
Channel 1: External Transistor Drive Pin <Connected to Pch Power MOSFET Gate>
Ordering Information
XC9505123456
DESIGNATOR SYMBOL
DESCRIPTION
1
Standard (10 Pin)
B
2
FB Voltage
0
3
0.9V
9
Oscillation Frequency
180kHz
2
4
3
300kHz (custom)
5
500kHz (custom)
5
Package
MSOP-10
A
Embossed Tape
R
Standard Feed
6
Embossed Tape
L
Reverse Feed
2
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Block Diagram
PWM/PFM
Controller1
EXT1
PWM/PFM
Controller2
EXT2/
PWM
Comparator2
PWM
Comparator1
+
-
FB1
-
GND
+
VDD
+
Error Amp1
FB2
+
Ramp Wave
Generator1
Ramp Wave
Generator2
Error Amp2
PWM1
PWM2
OSC
Generator
CE1
EN1
Vref1=0.9V
with Soft Start1,
CE1
EN1
CE1 to
EN1
EN2
CE2 to
internal circuit
Vref2=0.9V,
CE2
EN
CE2
EN
internal circuit
Absolute Maximum Ratings
PARAMETER
VDD Pin Voltage
FB1, 2 Pin Voltage
EN1, 2 Pin Voltage
PWM1,2 Pin Voltage
EXT1, 2 Pin Voltage
EXT1, 2 Pin Current
Power Dissipation
Operating Ambient Temperature
Storage Temperature
SYMBOL
VDD
VFB
VEN
VPWM
VEXT
IEXT
Pd
Topr
Tstg
RATINGS
- 0.3 ~ 12
- 0.3 ~ 12
- 0.3 ~ 12
- 0.3 ~ 12
- 0.3 ~ VDD + 0.3
± 100
150
- 40 ~ + 85
- 55 ~ + 125
3
Ta=25OC
UNITS
V
V
V
V
V
mA
mW
O
C
O
C
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Electrical Characteristics
XC9505B092A
PARAMETER
Supply Voltage
Output Voltage Range
Common Characteristics
SYMBOL
CONDITIONS
VDD
VDD ≥ 2.0V, IOUT1, 2=1mA
VOUTSET
(note 1)
IDD1
Supply Current 1
FB=0V, FB2=1.2V
Supply Current 1-1
IDD1-1 EN1=3.0V, EN2=0, FB1=0V
Supply Current 1-2
IDD1-2 EN2=3.0V, EN1=0, FB2=1.2V
Supply Current 1-3
IDD1-3 FB1=0V, FB2=0V
IDD1-4 FB1=1.2V, FB2=1.2V
Supply Current 1-4
IDD2
Supply Current 2
FB1=1.2V, FB2=0V
Same as IDD1, EN1=EN2=0V
ISTB
Stand-by Current
Oscillation Frequency
FOSC Same as IDD1
VENH
EN1, 2 "High" Voltage
FB1=0V, FB2=3.0V
VENL
EN1, 2 "Low" Voltage
FB1=0V, FB2=3.0V
IENH
EN1, 2 "High" Current
FB1=3.0V, FB2=0V
IENL
EN1, 2 "Low" Current
EN1, 2=0V, FB1=3.0V, FB2=0V
IPWMH FB1=3.0V, FB2=0V, PWM1, 2=3.0V
PWM1, 2 "High" Current
IPWML FB1=3.0V, FB2=0V, PWM1, 2=0V
PWM1, 2 "Low" Current
IFBH
FB1, 2 "High" Current
FB1=3.0V, FB2=0.8V
VFBL
FB1, 2 "Low" Current
FB1=1.0V, FB2=0V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Ta=25OC
MIN.
2.0
VOUT1 0.9
VOUT2
-
TYP.
80
50
60
70
80
70
MAX.
10.0
VIN
0.0
160
110
120
120
150
130
153
0.65
-
1.0
180
-
3.0
207
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
Output 1 Characteristics
PARAMETER
FB1 Voltage
Step-Down Controller
SYMBOL
CONDITIONS
MIN. TYP. MAX.
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
VFB1
Minimum Operating Voltage VINmin1
2
100
Maximum Duty Ratio1
MINDTY1 Same as IDD1
Minimum Duty Ratio1
MAXDTY2 Same as IDD2
PFM Duty Ratio1
PFMDTY1 No Load, VPWM1=0V
22
30
38
92
Efficiency1 (note 2)
EFFI1 IOUT1= 250mA, Pch MOSFET: XP162A12A6P
VOUT1 × 0.95V, EN1=0V→0.65V
TSS1
5.0
10.0
20.0
Soft-Start Time1
28
47
EXT1 "High" ON Resistance REXTBH1 FB1=0V, EXT1=VDD -0.4V
EXT1 "Low" ON Resistance REXTBL1 EN1=FB1=1.2V, EXT1=0.4V
22
30
VPWMH1 No Load
PWM1 "High" Voltage
0.65
VPWML1 No Load
PWM1 "Low" Voltage
0.20
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
PARAMETER
FB2 Voltage
Operation Start-up
Voltage2
Inverting DC/DC Controller
SYMBOL
CONDITIONS
VDD=3.0V
VFB2
IOUT2=1.0mA, RFB11=200kΩ, RFB12=75kΩ
VST1-2
UNITS
V
TEST CIRCUIT
V
1
µA
µA
µA
µA
µA
µA
µA
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
kHz
V
V
µA
µA
µA
µA
µA
µA
Ta=25OC
UNITS
V
V
%
%
%
%
msec
Ω
Ω
V
V
TEST CIRCUIT
3
1
2
2
4
4
4
5
5
4
4
Ta=25OC
MIN.
0.882
TYP.
0.900
MAX.
0.918
UNITS
V
TEST CIRCUIT
-
-
2.0
V
1
VST2-2 FB2=1.2V
2.0
75
80
87
MAXDTY2 Same as IDD1
0
MINDTY3 Same as IDD2
30
38
PFMDTY2 No Load, VPWM2 =0V
22
76
EFFI2 IOUT2= -150mA, Pch MOSFET: XP162A12A6P
R
EXTBH2 EN2=FB2= 0V, EXT2=VDD-0.4V
28
47
EXT2 "High" ON Resistance
EXT2 "Low" ON Resistance REXTBL2 FB2=3.0V, EXT2=0.4V
22
30
VPWMH2 No Load
PWM2 "High" Voltage
0.65
VPWML2 No Load
PWM2 "Low" Voltage
0.20
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=3.0V
V
%
%
%
%
Ω
Ω
V
V
2
2
2
6
6
5
5
6
6
RFB21=17.5kΩ, RFB22=10kΩ, EN1=PWM1=3.0V
Oscillation Start-up Voltage2
Maximum Duty Ratio2
Minimum Duty Ratio2
PFM Duty Ratio2
Efficiency2 (Note 2)
3)
Please be careful not to exceed the breakdown voltage level of the peripheral parts.
4)
EFFI1, 2={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
4
2
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Electrical Characteristics
XC9505B093A
PARAMETER
Supply Voltage
Output Voltage Range
Common Characteristics
SYMBOL
CONDITIONS
VDD
VDD ≥ 2.0V, IOUT1, 2=1mA
(note 1)
VOUTSET
IDD1
Supply Current 1
FB=0V, FB2=1.2V
Supply Current 1-1
IDD1-1 EN1=3.0V, EN2=0, FB1=0V
Supply Current 1-2
IDD1-2 EN2=3.0V, EN1=0, FB2=1.2V
Supply Current 1-3
IDD1-3 FB1=0V, FB2=0V
Supply Current 1-4
IDD1-4 FB1=1.2V, FB2=1.2V
IDD2
FB1=1.2V, FB2=0V
Supply Current 2
Same as IDD1, EN1=EN2=0V
ISTB
Stand-by Current
Oscillation Frequency
FOSC Same as IDD1
VENH
EN1, 2 "High" Voltage
FB1=0V, FB2=3.0V
VENL
EN1, 2 "Low" Voltage
FB1=0V, FB2=3.0V
IENH
EN1, 2 "High" Current
FB1=3.0V, FB2=0V
IENL
EN1, 2 "Low" Current
EN1, 2=0V, FB1=3.0V, FB2=0V
IPWMH FB1=3.0V, FB2=0V, PWM1, 2=3.0V
PWM1, 2 "High" Current
IPWML FB1=3.0V, FB2=0V, PWM1, 2=0V
PWM1, 2 "Low" Current
IFBH
FB1, 2 "High" Current
FB1=3.0V, FB2=0.8V
VFBL
FB1, 2 "Low" Current
FB1=1.0V, FB2=0V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Ta=25OC
MIN.
2.0
VOUT1 0.9
VOUT2
-
TYP.
100
60
80
80
100
80
MAX.
10.0
VIN
0.0
190
120
150
140
180
150
255
0.65
-
1.0
300
-
3.0
345
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
Output 1 Characteristics
PARAMETER
FB1 Voltage
Step-Down Controller
SYMBOL
CONDITIONS
MIN. TYP. MAX.
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
VFB1
Minimum Operating Voltage VINmin1
2.0
Maximum Duty Ratio1
MINDTY1 Same as IDD1
100
Minimum Duty Ratio1
MAXDTY2 Same as IDD2
PFM Duty Ratio1
PFMDTY1 No Load, VPWM1=0V
22
30
38
Efficiency1 (note 2)
EFFI1 IOUT1= 250mA, Pch MOSFET: XP162A12A6P
92
VOUT1 × 0.95V, EN1=0V→0.65V
TSS1
5.0
10.0
20.0
Soft-Start Time1
28
47
EXT1 "High" ON Resistance REXTBH1 FB1=0V, EXT1=VDD -0.4V
22
30
EXT1 "Low" ON Resistance REXTBL1 EN1=FB1=1.2V, EXT1=0.4V
VPWMH1 No Load
PWM1 "High" Voltage
0.65
VPWML1 No Load
PWM1 "Low" Voltage
0.20
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
PARAMETER
FB2 Voltage
Operation Start-up
Voltage2
Inverting DC/DC Controller
SYMBOL
CONDITIONS
VDD=3.0V
VFB2
IOUT2=1.0mA, RFB11=200kΩ, RFB12=75kΩ
VST1-2
UNITS
V
TEST CIRCUIT
V
1
µA
µA
µA
µA
µA
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Ta=25OC
UNITS
V
V
%
%
%
%
msec
Ω
Ω
V
V
TEST CIRCUIT
3
1
2
2
4
4
4
5
5
4
4
Ta=25OC
MIN.
0.882
TYP.
0.900
MAX.
0.918
UNITS
V
TEST CIRCUIT
-
-
2.0
V
1
2.0
VST2-2 FB2=1.2V
MAXDTY2 Same as IDD1
75
80
87
0
MINDTY3 Same as IDD2
22
30
38
PFMDTY2 No Load, VPWM2 =0V
75
EFFI2 IOUT2= -150mA, Pch MOSFET: XP162A12A6P
28
47
EXT2 "High" ON Resistance REXTBH2 EN2=FB2= 0V, EXT2=VDD-0.4V
EXT2 "Low" ON Resistance REXTBL2 FB2=3.0V, EXT2=0.4V
22
30
VPWMH2 No Load
PWM2 "High" Voltage
0.65
VPWML2 No Load
PWM2 "Low" Voltage
0.20
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=3.0V
V
%
%
%
%
Ω
Ω
V
V
2
2
2
6
6
5
5
6
6
RFB21=17.5kΩ, RFB22=10kΩ, EN1=PWM1=3.0V
Oscillation Start-up Voltage2
Maximum Duty Ratio2
Minimum Duty Ratio2
PFM Duty Ratio2
Efficiency2 (Note 2)
3)
Please be careful not to exceed the breakdown voltage level of the peripheral parts.
4)
EFFI1, 2={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
5
2
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Electrical Characteristics
XC9505B095A
PARAMETER
Supply Voltage
Output Voltage Range
Common Characteristics
SYMBOL
CONDITIONS
VDD
VDD ≥ 2.0V, IOUT1, 2=1mA
(note 1)
VOUTSET
IDD1
Supply Current 1
FB=0V, FB2=1.2V
Supply Current 1-1
IDD1-1 EN1=3.0V, EN2=0, FB1=0V
Supply Current 1-2
IDD1-2 EN2=3.0V, EN1=0, FB2=1.2V
Supply Current 1-3
IDD1-3 FB1=0V, FB2=0V
Supply Current 1-4
IDD1-4 FB1=1.2V, FB2=1.2V
IDD2
FB1=1.2V, FB2=0V
Supply Current 2
Same as IDD1, EN1=EN2=0V
ISTB
Stand-by Current
Oscillation Frequency
FOSC Same as IDD1
VENH
EN1, 2 "High" Voltage
FB1=0V, FB2=3.0V
VENL
EN1, 2 "Low" Voltage
FB1=0V, FB2=3.0V
IENH
EN1, 2 "High" Current
FB1=3.0V, FB2=0V
IENL
EN1, 2 "Low" Current
EN1, 2=0V, FB1=3.0V, FB2=0V
IPWMH FB1=3.0V, FB2=0V, PWM1, 2=3.0V
PWM1, 2 "High" Current
IPWML FB1=3.0V, FB2=0V, PWM1, 2=0V
PWM1, 2 "Low" Current
IFBH
FB1, 2 "High" Current
FB1=3.0V, FB2=0.8V
VFBL
FB1, 2 "Low" Current
FB1=1.0V, FB2=0V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Ta=25OC
MIN.
2.0
VOUT1 0.9
VOUT2
-
TYP.
130
80
110
100
140
100
MAX.
10.0
0.0
250
150
220
170
230
190
425
0.65
-
1.0
500
-
3.0
575
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
Output 1 Characteristics
PARAMETER
FB1 Voltage
Step-Down Controller
SYMBOL
CONDITIONS
MIN. TYP. MAX.
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
VFB1
Minimum Operating Voltage VINmin1
2.0
Maximum Duty Ratio1
MINDTY1 Same as IDD1
100
Minimum Duty Ratio1
MAXDTY2 Same as IDD2
PFM Duty Ratio1
PFMDTY1 No Load, VPWM1=0V
22
30
38
Efficiency1 (note 2)
EFFI1 IOUT1= 250mA, Pch MOSFET: XP162A12A6P
91
VOUT1 × 0.95V, EN1=0V→0.65V
TSS1
5.0
10.0
20.0
Soft-Start Time1
28
47
EXT1 "High" ON Resistance REXTBH1 FB1=0V, EXT1=VDD -0.4V
22
30
EXT1 "Low" ON Resistance REXTBL1 EN1=FB1=1.2V, EXT1=0.4V
VPWMH1 No Load
PWM1 "High" Voltage
0.65
VPWML1 No Load
PWM1 "Low" Voltage
0.20
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
PARAMETER
FB2 Voltage
Operation Start-up
Voltage2
Inverting DC/DC Controller
SYMBOL
CONDITIONS
VDD=3.0V
VFB2
IOUT2=1.0mA, RFB11=200kΩ, RFB12=75kΩ
VST1-2
UNITS
V
TEST CIRCUIT
V
1
µA
µA
µA
µA
µA
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Ta=25OC
UNITS
V
V
%
%
%
%
msec
Ω
Ω
V
V
TEST CIRCUIT
3
1
2
2
4
4
4
5
5
4
4
Ta=25OC
MIN.
0.882
TYP.
0.900
MAX.
0.918
UNITS
V
TEST CIRCUIT
-
-
2.0
V
1
2.0
VST2-2 FB2=1.2V
MAXDTY2 Same as IDD1
75
80
87
0
MINDTY3 Same as IDD2
22
30
38
PFMDTY2 No Load, VPWM2 =0V
71
EFFI2 IOUT2= -150mA, Pch MOSFET: XP162A12A6P
28
47
EXT2 "High" ON Resistance REXTBH2 EN2=FB2= 0V, EXT2=VDD-0.4V
EXT2 "Low" ON Resistance REXTBL2 FB2=3.0V, EXT2=0.4V
22
30
VPWMH2 No Load
PWM2 "High" Voltage
0.65
VPWML2 No Load
PWM2 "Low" Voltage
0.20
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=3.0V
V
%
%
%
%
Ω
Ω
V
V
2
2
2
6
6
5
5
6
6
RFB21=17.5kΩ, RFB22=10kΩ, EN1=PWM1=3.0V
Oscillation Start-up Voltage2
Maximum Duty Ratio2
Minimum Duty Ratio2
PFM Duty Ratio2
Efficiency2 (Note 2)
3)
Please be careful not to exceed the breakdown voltage level of the peripheral parts.
4)
EFFI1, 2={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
6
2
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Operational Description
The XC9505 series are dual DC/DC (step-down + inverting) converter controller ICs with built-in high speed, low ON resistance buffers.
<Error Amp. 1>
Error Amplifier 1 is designed to monitor the output voltage and it compares the feedback voltage 1 (FB1) with the reference voltage Vref1.
In response to feedback of a voltage lower than the reference voltage Vref1, the output voltage of the error amp. decreases.
<Error Amp. 2>
Error Amplifier 2 is designed to monitor the output voltage and it compares the feedback voltage 2 (FB2) with the reference voltage Vref 2.
In response to feedback of a voltage lower than the reference voltage Vref2, the output voltage of the error amp. decreases.
<OSC Generator>
This circuit generates the internal reference clock.
<Ramp Wave Generator 1, 2>
The Ramp Wave Generator generates a saw-tooth waveform based on outputs from the OSC Generator.
<PWM Comparator 1, 2>
The PWM Comparator compares outputs from the Error Amp. and saw-tooth waveform. When the voltage from the Error Amp's output is
low, the external switch will be set to ON.
<PWM/PFM Controller 1, 2>
This circuit generates PFM pulses.
Control can be switched between PWM control and PWM/PFM automatic switching control using external signals.
The PFM/PWM automatic switching mode is selected when the voltage of the PWM1 (2) pin is less than 0.2V, and the control switches
between PWM and PFM automatically depending on the load. As the PFM circuit generates pulses based on outputs from the PWM
Comparator, shifting between modes occurs smoothly. PWM control mode is selected when the voltage of the PWM1 (2) pin is more than
0.65V. Noise is easily reduced with PWM control since the switching frequency is fixed.
Control suited to the application can easily be selected which is useful in audio applications, for example, where traditionally, efficiencies
have been sacrificed during stand-by as a result of using PWM control (due to the noise problems associated with the PFM mode in standby).
<Vref 1 with Soft Start 1>
The reference voltage, Vref1(FB1 pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please refer to the
functional settings notes on page 9.). To protect against inrush current, when the power is switched on, and also to protect against voltage
overshoot, soft-start time is set internally to 10ms. It should be noted, however, that this circuit does not protect the load capacitor (CL)
from inrush current. With the Vref voltage limited, and depending upon the input to error amp 1, the operation maintains a balance between
the two inputs of error amps and controls the EXT pin's ON time so that it doesn't increase more than is necessary.
<Vref 2>
The reference voltage, Vref2 (FB2 pin voltage)=0.9V, is adjusted and fixed by laser trimming.
<Enable Function 1,2>
This function controls the operation and shutdown of the IC. When the voltage of the EN1 or EN2 pins is 0.2V or less, the mode will
be disable, the channel's operations will stop and the EXT1 and the EXT2 pin will be kept at a high level (the external P-type
MOSFET will be OFF). When both EN1 and EN2 are in a state of chip disable, current consumption will be no more than 3.0µA.
When the EN1 or EN2 pin's voltage is 0.65V or more, the mode will be enable and operations will recommence. With channel one
(output 1) soft-start, 95% of the set output voltage will be reached within 10msec (TYP) from the moment of enable.
7
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Functional Settings
< Output Voltage Setting, Ch.1 (Step-up DC/DC Converter Controller) >
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of
RFB11 and RFB12. The sum of RFB11 and RFB12 should normally be 1 MΩ or less.
VOUT1=0.9 × (RFB11+RFB12) / RFB12
The speed-up capacitor for phase compensation's (CFB1) value should be adjusted using the formula fzfb=1/(2×π×CFB1×RFB11) so that it
equals 12kHz. Depending on the application, the inductance value L, and the load capacity value CL, adjustments to this value are
suggested so that the value is somewhere between 1kHz to 50kHz.
[Calculation Example]
When RFB11=220kΩ and RFB12=75kΩ : VOUT1=0.9 × (200k+75k) / 75k=3.3V.
[Typical Example]
VOUT
(V)
RFB11 RFB12 CFB1
(pF)
(kΩ)
(kΩ)
1.0
1.5
1.8
2.0
2.2
30
220
220
330
390
270
330
220
270
270
VOUT
(V)
430
62
62
39
33
2.5
2.7
3.0
3.3
5.0
RFB11 RFB12 CFB1
(pF)
(kΩ)
(kΩ)
390
360
560
200
82
220
180
240
75
18
33
33
24
62
160
< Output Voltage Setting, Ch.2 (Inverting DC/DC Converter) >
Output voltage can be set by adding reference voltage and split resistors externally. Output voltage is determined using the following
equation and is based on the values of RFB21 and RFB22. The sum of RFB21 and RFB22 should normally be 500kΩ or less. The
equation uses Ch 1's (VOUT1) output voltage calculation method for the reference voltage.
VOUT2 = (0.9 - VOUT1) x (RFB21 / RFB22) + 0.9V
[Calculation Example]
When RFB21=17.5kΩ, RFB22=10kΩ, VOUT1=3.3V, VOUT2= - 3.3V
The value of speed-up capacitor for phase compensation CFB21 :
[Conditions: Heavy load (when coil current is continous.)]
fzfb2 = 1/2 x π x CFB21 x RFB21) = 10kHz
Depending on the application, the inductance value L, and the load capacity value CL, adjustments to this value are suggested so that the
value is somewhere between 1kHz to 50kHz.
[Conditions: Light load (when coil current is discontinous.)]
Less than CFB21=0.1µF
Depending on the application, the inductance value L, and the load capacity value CL, adjustments to this value are suggested.
> Example Circuit 1 : Using voltage of Ch 1 (Step-Down)
VOUT1
Inside of XC9505 IC
RFB22
FB2
CL2
CFB21
RFB21
Channel 1 (Step-Down) circuits should be enable by setting EN1 to
High level so that a stable voltage is provided. Inrush current to the
inverter when the supply voltage VDD of the IC is 2.0 V or higher can
be controlled by setting EN 1 and EN 2 to enable (“H” level)
simultaneously.
VOUT2
SBD2
> Example Circuit 1 : Using a positive regulator
Inside of
XC9505 IC
VR_OUT
VR
To the other
circuit
RFB22
A stable positive voltage produced by a positive-voltage regulator or
by other means is usable.
FB2
VOUT2 = (0.9 - VROUT) x (RFB21 / RFB22) + 0.9V
CL2
SBD2
RFB21
CFB21
VOUT2
8
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
External Components
Conditions : Light load (when coil current is discontinuous.)
Channel One (Step-Down DC/DC Converter Controller)
Channel Two (Inverter DC/DC Controller)
Tr 1 :
Tr 2 :
* MOSFET
XP152A12C0
(TOREX P-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
SD 1 :
L1 :
CRS02
10µH
CL1 :
(Schottky , TOSHIBA)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 500kHz)
15µH
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 300kHz)
22µH
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 180kHz)
Please set so that the coil current is discontinous.
10V, 4.7µF
(Ceramic)
RB1 :
*PNP Tr
2SA1213
500Ω
(TOSHIBA)
Adjust in accordance with load &
Tr.'s HFE
* MOSFET
XP152A12C0
SD 2 :
L2 :
CRS02
10µH
CL2 :
(Schottky, TOSHIBA)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 500kHz)
15µH
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 300kHz)
22µH
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 180kHz)
Please set so that the coil current is discontinous.
10V, 4.7µF
(Ceramic)
RB 2 :
*PNP Tr
2SA1213
500Ω
RB1≤ (VIN-0.7) x (hFE/IC-REXTBL)
CB1 :
2200pF
(Ceramic)
CB1≤ (2π x RB2 x FOSC x 0.7)
(TOREX P-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
(TOSHIBA)
Adjust in accordance with load &
Tr.'s HFE
RB2≤ (VIN-0.7) x (hFE/IC-REXTBL)
CB 2 :
2200pF
(Ceramic)
CB2≤ (2π x RB2 x FOSC x 0.7)
Conditions: Heavy load (when coil current is continous.)
Channel One (Step-Down DC/DC Converter Controller)
Channel Two (Inverter DC/DC Controller)
Tr 1 :
* MOSFET
XP162A12A6P (TOREX P-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
Tr 2 :
SD 1 :
MA2Q737
(Schottky , MATSUSHITA)
SD 2 :
CMS02
(Schottky , TOSHIBA)
10µH
(SUMIDA, CDRH5D28, FOSC = 500kHz) L2 :
22µH
(SUMIDA, CDRH5D28, FOSC = 300kHz)
47µH
(SUMIDA, CDRH5D28, FOSC = 180kHz)
16V, 47µF
(Tantalum)
CL2 :
Increase capacity according to the equation below
when the step-up voltage ratio is large and output
current is high.
L1 :
CL1 :
CL = (CL standard value ) x (IOUT1 (mA) / 500mA x VOUT1 / VIN)
RB1 :
*PNP Tr
2SA1213
500Ω
(TOSHIBASANYO)
Adjust in accordance with load &
Tr.'s HFE
* MOSFET
XP162A12A6P (TOREX P-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
MA2Q737
(Schottky, MATSUSHITA)
CRS02, CMS02
(Schottky , TOSHIBA)
10µH
(SUMIDA, CDRH5D28, FOSC = 500kHz)
15µH
(SUMIDA, CDRH5D28, FOSC = 300kHz)
22µH
(SUMIDA, CDRH5D28, FOSC = 180kHz)
16V, 47µF
(Tantalum)
Increase capacity according to the equation below
when the step-up voltage ratio is large and output
current is high.
CL = (CL standard value ) x (IOUT2 (mA) / 150mA x VOUT2 / VIN)
RB 2 :
*PNP Tr
2SA1213
500Ω
RB1≤ (VIN-0.7) x (hFE/IC-REXTBL)
CB1 :
2200pF
(Ceramic)
CB1≤ (2π x RB2 x FOSC x 0.7)
(TOSHIBA)
Adjust in accordance with load &
Tr.'s HFE
RB2≤ (VIN-0.7) x (hFE/IC-REXTBL)
CB 2 :
9
2200pF
(Ceramic)
CB2≤ (2π x RB2 x FOSC x 0.7)
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Notes on how to use
Hint on application
1. Channel 2 ( Inverting )
Soft start circuit
Channel 2 (inverting) is subject to the overshoot of output voltage 2 (VOUT 2) at start-up. It is possible to control the overshoot of
output voltage 2 (VOUT 2), as shown by circuit example 1 in “Output Voltage Settings for Channel 2” in “Function Settings.” In this
circuit configuration, EN 1 and EN 2 are enabled (set to “H” level) simultaneously. This lets output voltage 1 (VOUT 1) of channel 1
increase gently as soft start, thereby controlling the overshoot.
> Example of typical application circuit : Improved Soft start
This example is effective when EN 1 and EN 2 are enabled with different timings under light load condition (the coil current being
discontinuous).
VOUT1
Inside of
XC9505 IC
Pch
MOSFET1
Time to make soft start time is calculated by the equation below.
R1
RFB22
FB2
Nch
MOSFET2
EN2
ON/OFF
signal
SBD2
CL2
RFB21
CFB21
VOUT2
Time SS2 = - R FB21 x C CFB21 / Ln
1-
(0.9 - V OUT2 ) x R FB22 )
(V OUT1 - 0.9) x R FB21
Example )
When VOUT1 = 3.3V and VOUT2 = - 7.5V,
RFB21 = 350kΩ, RFB22 = 100kΩ by the equation below.
VOUT2 = (0.9 - VOUT1) x (RFB21 / RFB22) + 0.9
When the light load, CFB21=0.1µF or lower value can be used.
Therefore, when CFB21=0.027µF,
Time_ss2 = 5.0mS and VOUT2 = 95% of setting value
2. Channel 2 (Inverting)
Withstand voltage of transistor
The voltage applied between the drain and source is the sum of VIN and VOUT 2.
Select a transistor with an absolute VDSS rating that is suitable for your operating conditions.
Example: The voltage applied across VDS of a transistor will be 20.0V if VIN = 5.0 V and VOUT 2 = -15.0 V.
Under this condition, a transistor with VDSS higher than 20.0V should be selected. (Use a transistor with VDSS
that is 1.5 times the applied voltage or more, as a standard.)
10
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Test Circuits
Circuit 4
Circuit 1
Pch
MOSFET1
L1
VOUT1
L1
VOUT1
PNP
Tr
PNP
Tr
+
510W
2200pF
VIN
SD1
2 VDD
CL1
EXT2/ 10
V
3 FB1
4 PWM1
FB2 8
L2
VPWM2
PWM2
5 EN1
VPWM1
GND 9
3 FB1
FB2 8
5 EN1
CL2
VIN
PWM2 7
EN2 6
RL2
L2
+
EN2 6
2 VDD
4 PWM1
75kW
SD2
PWM2 7
RFB12
EXT2 10
RL
VOUT2
RL1
1 EXT1
CIN
SBD1
62pF
RFB21
FB21
2200pF
GND 9
1mF
47mF
200k
W
A
CFB2
FB2
2200pF
CFB1
+
A
CIN
510W
1 EXT1/
RFB11
RFB22
VEN1
VEN1
Circuit 5
Circuit 2
1
1 EXT1/
EXT1
A
GND 9
3 FB1
FB2 8
4 PWM1
OSC
A
A
A
EXT2/ 10
2 VDD
5 EN1
1 EXT1
Rp
A
A
OSC
A
VFB1
VPWM1
VEN1
VPWM2
PWM2 7
OSC
1mF
VEN2
Rp
FB2 8
4 PWM1
OSC
1mF
VDD
GND 9
3 FB1
PWM2 7
EN2 6
EXT2 10
2 VDD
VFB2
VPWM1
VDD
VFB1
VEXT1
5 EN1
VPWM2
EN2 6
VFB2
FB2
VEN2
VEN1
VEXT2
Circuit 6
Circuit 3
L1
VOUT1
Pch
MOSFET1
Pch
MOSFET
SD2
OUT2
VOUT2
A
A
A
V
CL1
+
L2
1 EXT1
EXT2 10
2 VDD
GND 9
2 VDD
FB2 8
3 FB1
SBD1
VIN
3 FB1
VIN
1 EXT1
EXT2/ 10
A
CL2
+
20kW
CIN
CIN
V
FB2 8
RL
RLL
OSC
4 PWM1
5 EN1
PWM2 7
4 PWM1
EN2 6
5 EN1
PWM2 7
EN2 6
20kW
4.8V
VEN2
VPWM2
11
CFB2
GND 9
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
External Components of the Test Circuits
Circuits 1
L1, L2: 22µH (SUMIDA CDRH5D28) : XC9505B092A
15µH (SUMIDA CDRH5D28) : XC9505B093A
10µH (SUMIDA CDRH5D28) : XC9505B095A
SD1, SD2 : CRS02 (Schottky, TOSHIBA)
EC10QS06 (Schottky, NIHON INTER)
CL1, CL2 : 16MCE476MD2 (Tantalum, NIHON CHEMICON)
35MCE335MB x 3 (Tantalum, NIHON CHEMICON)
CIN : 16MCE476MD2
PNP Tr 1 : 2SA1213 (TOSHIBA)
PNP Tr 2 : 2SA1213 (TOSHIBA)
RFB : Please use by the conditions as below.
RFB11 + RFB12≤ 1MΩ
RFB21 + RFB22≤ 1MΩ
RFB11 / RFB12 = (Setting Output Voltage / 0.9) - 1
VOUT2 = (0.9 - VOUT1) / (RFB21 / RFB22) + 0.9V
CFB : fzfb = 1 /(2 x π x CFB1 x RFB11) = 1kHz to 50kHz (12kHz usual)
fzfb = 1 /(2 x π x CFB2 x RFB21) = 1kHz to 50kHz (12kHz usual).
Circuits 3
L1 :
SD 1 :
CL 1 :
CIN :
Pch MOSFET :
22µH (SUMIDA CDRH5D28)
MA2Q737 (Schottky, MATSUSHITA)
16MCE476MD2 (Tantalum, NIHONCHEMICON)
16MCE476MD2 (Tantalum, NIHONCHEMICON)
XP162A12A6P (TOREX)
Circuits 4
L1 : 22µH (SUMIDA CDRH5D28) : XC9505B092A
15µH (SUMIDA CDRH5D28) : XC9505B093A
10µH (SUMIDA CDRH5D28) : XC9505B095A
SD 1 : MA2Q737 (Schottky, MATSUSHITA)
CL 1 : 16MCE476MD2 (Tantalum, NIHONCHEMICON)
CIN : 16MCE476MD2 (Tantalum, NIHONCHEMICON)
Pch MOSFET : XP162A12A6P (TOREX)
Circuits 6
L2 : 22µH (SUMIDA CDRH5D28) : XC9505B092A
15µH (SUMIDA CDRH5D28) : XC9505B093A
10µH (SUMIDA CDRH5D28) : XC9505B095A
SD 2 : MA2Q737 (Schottky, MATSUSHITA)
CL 2 : 16MCE476MD2 (Tantalum, NIHONCHEMICON)
CIN : 16MCE476MD2 (Tantalum, NIHONCHEMICON)
Pch MOSFET : XP162A12A6P (TOREX)
12
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Note on Use
1. Checking for Intermittent Oscillation
The XC9505 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low (e.g.,
from 4.2 V to 3.3 V) or a heavy load is applied where the duty ratio becomes high. Check waveforms at EXT under your
operating conditions. A remedy for this problem is to raise the inductance of coil L or increase the load capacitance CL.
2. PWM/PFM Automatic Switching
If PWM/PFM automatic switching control is selected and the step-down ratio is high (e.g., from 10.0 V to 1.0 V), the control mode
remains in PFM setting over the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM
duty ratio of the XC9505series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with
the XC9505 series appearing to be producing an abnormal oscillation. If this operation becomes a concern, set pins PWM to
High to set the control mode to PWM setting. For use under the above-mentioned condition, measured data of PWM/PFM
automatic switching control shown on the data sheets are available up to IOUT = 100 mA.
3. Ratings
Use the XC9505 series and peripheral components within the limits of their ratings.
13
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
! Typical Performance Characteristics
< 1ch Step-Down DC/DC Controller >
(1) Output Voltage vs. Output Current
FOSC=180kHz, VOUT1=1.0V
FOSC=180kHz, VOUT1=1.0V
L1=47µH(CDRH6D38), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
1.2
L1=47µH(CDRH6D38), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
1.2
PWM/PFM Switching Control
1.1
Output Voltage1 VOUT1 (V)
Output Voltage1 VOUT1 (V)
PWM Control
10V
1.0
0.9
VIN=2.7V 3.3V 4.2V
5.0V 6.0V 8.0V
0.8
1.1
10V
1.0
0.9
4.2V 5.0V 6.0V 8.0V
VIN=2.7V 3.3V
0.8
0.7
0.7
0.1
1
10
100
0.1
1000
1
L1=47µH(CDRH6D38), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
PWM/PFM Switching Control
PWM Control
Output Voltage1 VOUT1 (V)
Output Voltage1 VOUT1 (V)
1000
L1=47µH(CDRH6D38), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
5.2
PWM/PFM Switching Control
PWM Control
3.4
3.3
3.2
VIN=4.2V 5.0V 6.0V 8.0V 10V
3.1
3.0
5.1
5.0
4.9
VIN= 6.0V 8.0V 10V
4.8
4.7
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
100
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
1.2
PWM/PFM Switching Control
Output Voltage1 VOUT1 (V)
PWM Control
1.1
1.0
0.9
10
FOCS=300kHz, VOUT1=1.0V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
1.2
1
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=1.0V
Output Voltage1 VOUT1 (V)
100
FOSC=180kHz, VOUT1=5.0V
FOSC=180kHz, VOUT1=3.3V
3.5
10
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
0.8
5.0V
1.1
VIN=2.7V 3.3V
1.0
4.2V 6.0V 8.0V 10V
0.9
0.8
0.7
0.7
0.1
1
10
100
Output Current1 I OUT1 (mA)
1000
0.1
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
14
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(1) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1=1.8V
FOSC=300kHz, VOUT1=1.8V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
2.0
PWM Control
PWM/PFM Switching Control
Output Voltage1 VOUT1 (V)
Output Voltage1 VOUT1 (V)
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
2.0
1.9
1.8
1.7
VIN= 2.7V 3.3V 4.2V
5.0V 6.0V 8.0V 10V
1.6
1.5
6.0V 8.0V 10V
1.9
1.8
1.7
VIN= 2.7V 3.3V 4.2V 5.0V
1.6
1.5
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=2.5V
100
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
2.7
PWM/PFM Switching Control
2.6
Output Voltage1 VOUT1 (V)
PWM Control
10.0V
2.5
2.4
VIN= 2.7V 3.3V 4.2V
5.0V 6.0V 8.0V
2.3
10V
8.0V
2.6
2.5
2.4
3.3V 4.2V 5.0V 6.0V
VIN=2.7V
2.3
2.2
2.2
0.1
1
10
100
0.1
1000
1
10
100
1000
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
3.5
PWM/PFM Switching Control
Output Voltage1 VOUT1 (V)
VIN=4.2V 5.0V 6.0V 8.0V
3.4
3.3
10.0V
3.2
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
3.5
PWM Control
Output Voltage1 VOUT1 (V)
Output Voltage1 VOUT1 (V)
10
FOSC=300kHz, VOUT1=2.5V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
2.7
1
Output Current1 I OUT1 (mA)
3.4
VIN=4.2V 5.0V 6.0V 8.0V
3.3
3.2
10.0V
3.1
3.1
3.0
0.1
3.0
0.1
1
10
100
1000
1
10
100
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
15
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(1) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1=5.0V
FOSC=300kHz, VOUT1=5.0V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
5.2
PWM Control
PWM/PFM Switching Control
10.0V
5.1
Output Voltage1 VOUT1 (V)
Output Voltage1 VOUT1 (V)
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
5.2
5.0
VIN= 6.0V 8.0V
4.9
4.8
4.7
10.0V
5.1
5.0
VIN= 6.0V 8.0V
4.9
4.8
4.7
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
FOSC=500kHz, VOUT1=1.0V
1.2
1000
PWM/PFM Switching Control
Output Voltage1 VOUT1 (V)
Output Voltage1 VOUT1 (V)
100
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
PWM Control
1.1
1.0
0.9
10
FOSC=500kHz, VOUT1=1.0V
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
1.2
1
Output Current1 I OUT1 (mA)
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
0.8
0.7
VIN=2.7V 3.3V 4.2V 5.0V
1.1
1.0
0.9
6.0V 8.0V 10V
0.8
0.7
0.1
1
10
100
1000
0.1
1
Output Current1 I OUT1 (mA)
FOSC=500kHz, VOUT1=3.3V
100
1000
FOSC=500kHz, VOUT1=3.3V
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
3.5
10
Output Current1 I OUT1 (mA)
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
3.5
PWM Control
PWM/PFM Switching Control
Output Voltage1 VOUT1 (V)
Output Voltage1 VOUT1 (V)
10V
3.4
3.3
VIN=4.2V 5.0V 6.0V 8.0V 10V
3.2
3.1
3.0
3.4
3.3
VIN=4.2V 5.0V 6.0V 8.0V
3.2
3.1
3.0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
16
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(1) Output Voltage vs. Output Current (Continued)
FOSC=500kHz, VOUT1=5.0V
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
5.2
Output Voltage1 VOUT1 (V)
PWM/PFM Switching Control
PWM Control
5.1
5.0
VIN= 6.0V 8.0V 10V
4.9
4.8
4.7
0.1
1
10
100
1000
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
17
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(2) Efficiency vs. Output Current
FOSC=180kHz, VOUT1=1.0V
FOSC=180kHz, VOUT1=1.0V
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
100
PWM/PFM Switching Control
PWM Control
VIN=5.0V
80
80
Efficiency1 EFFI1 (%)
Efficiency1 EFFI1 (%)
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
60
4.2V
40
3.3V
VIN=2.7V
20
8.0V
60
6.0V
40
10V
20
0
PWM/PFM Switching Control
PWM Control
0
0.1
1
10
100
1000
0.1
10
100
Output Current1 I OUT1 (mA)
FOSC=180kHz, VOUT1=3.3V
FOSC=180kHz, VOUT1=5.0V
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
1
Output Current1 I OUT1 (mA)
1000
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
80
VIN=4.2V
Efficiency1 EFFI1 (%)
Efficiency1 EFFI1 (%)
5.0V
10V
60
8.0V
6.0V
40
20
80
10V
60
8.0V
VIN=6.0V
40
20
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
0
0
0.1
1
10
100
1000
0.1
100
FOSC=300kHz, VOUT1=1.0V
FOSC=300kHz, VOUT1=1.0V
PWM/PFM Switching Control
PWM Control
10V
80
Efficiency1 EFFI1 (%)
80
60
4.2V
3.3V
40
VIN=2.7V
20
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
Efficiency1 EFFI1 (%)
10
Output Current1 I OUT1 (mA)
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
1
Output Current1 I OUT1 (mA)
8.0V
6.0V
60
40
20
VIN=5.0V
0
0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
18
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(2) Efficiency vs. Output Current (Continued)
FOSC=300kHz, VOUT1=1.8V
FOSC=300kHz, VOUT1=1.8V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
100
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
80
Efficiency1 EFFI1 (%)
Efficiency1 EFFI1 (%)
80
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
VIN= 2.7V
60
3.3V
40
4.2V
20
10V
60
VIN=5.0V
8.0V
40
6.0V
20
0
0
0.1
1
10
100
1000
0.1
1
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=2.5V
Efficiency1 EFFI1 (%)
Efficiency1 EFFI1 (%)
80
VIN=2.7V
3.3V
40
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
60
100
FOSC=300kHz, VOUT1=2.5V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
10
Output Current1 I OUT1 (mA)
4.2V
20
PWM/PFM Switching Control
PWM Control
80
10V
60
VIN=5.0V
40
8.0V
6.0V
20
PWM/PFM Switching Control
PWM Control
0
0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=3.3V
Efficiency1 EFFI1 (%)
Efficiency1 EFFI1 (%)
10V
60
8.0V
40
6.0V
VIN=4.2V 5.0V
20
100
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
80
10
FOSC=300kHz, VOUT1=5.0V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
1
Output Current1 I OUT1 (mA)
PWM/PFM Switching Control
PWM Control
80
60
10V
40
8.0V
VIN=6.0V
20
0
0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
19
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(2) Efficiency vs. Output Current (Continued)
FOSC=500kHz, VOUT1=1.0V
FOSC=500kHz, VOUT1=1.0V
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
80
Efficiency1 EFFI1 (%)
Efficiency1 EFFI1 (%)
PWM/PFM Switching Control
PWM Control
60
4.2V
40
3.3V
VIN=2.7V
20
0
VIN=5.0V
60
10V
40
8.0V
6.0V
20
0
0.1
1
10
100
1000
0.1
10
100
Output Current1 I OUT1 (mA)
FOSC=500kHz, VOUT1=3.3V
FOSC=500kHz, VOUT1=3.3V
Efficiency1 EFFI1 (%)
10V
8.0V
60
6.0V
5.0V
40
VIN=4.2V
20
PWM/PFM Switching Control
PWM Control
80
60
10V
40
8.0V
VIN=6.0V
20
0
1000
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
80
1
Output Current1 I OUT1 (mA)
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
Efficiency1 EFFI1 (%)
80
0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
20
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(3) Ripple Voltage vs. Output Current
FOSC=180kHz, VOUT1=1.0V
FOSC=180kHz, VOUT1=1.0V
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
80
80
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
PWM Control
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
60
40
60
VIN=2.7V
40
0
3.3V
0
0.1
1
10
100
0.1
1000
FOSC=180kHz, VOUT1=3.3V
10
100
1000
FOSC=180kHz, VOUT1=3.3V
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
1
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM Control
PWM/PFM Switching Control
80
Ripple Voltage1 (mV)
80
Ripple Voltage1 (mV)
8.0V
20
20
60
10V
40
8.0V
VIN=4.2V 6.0V
20
5.0V
60
40
VIN=4.2V 5.0V
6.0V
8.0V
10V
20
0
0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
10
100
1000
FOSC=180kHz, VOUT1=5.0V
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
1
Output Current1 I OUT1 (mA)
FOSC=180kHz, VOUT1=5.0V
L1=47µH(CDRH6D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM Control
PWM/PFM Switching Control
80
Ripple Voltage1 (mV)
80
Ripple Voltage1 (mV)
4.2V 10V 5.0V 6.0V
60
40
10V
8.0V
VIN=6.0V
20
60
40
VIN=6.0V
8.0V
10V
20
0
0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
21
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(3) Ripple Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1=1.0V
FOSC=300kHz, VOUT1=1.0V
L1=22µH(CDRH5D28), CL1=94µF(Tantaum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
80
60
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
80
VIN=2.7V 3.3V 5.0V 6.0V
40
8.0V 10V
4.2V
20
40
6.0V 5.0V 10V 4.2V
8.0V 3.3V
0
0.1
1
10
100
1000
0.1
1
10
100
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=1.8V
FOSC=300kHz, VOUT1=1.8V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
Ripple Voltage1 (mV)
80
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
60
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM Control
Ripple Voltage1 (mV)
VIN=2.7V
60
20
0
40
20
80
60
5.0V 4.2V
10V 8.0V 6.0V
3.3V VIN=2.7V
40
20
0
0
0.1
1
10
100
1000
0.1
1
10
100
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=2.5V
FOSC=300kHz, VOUT1=2.5V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM Control
PWM/PFM Switching Control
Ripple Voltage1 (mV)
80
Ripple Voltage1 (mV)
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
60
40
80
60
VIN=2.7V
10V 8.0V 6.0V 5.0V 4.2V
40
3.3V
20
20
0
0
0.1
1
10
100
0.1
1000
1
10
100
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
22
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller ICs
< 1ch Step-Down DC/DC Controller >
(3) Ripple Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
80
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
PWM Control
VIN=4.2V 5.0V 6.0V
8.0V 10V
60
40
80
60
VIN=4.2V
20
20
0
0
0.1
1
10
100
0.1
1000
10
100
Output Current1 I OUT1 (mA)
FOSC=300kHz, VOUT1=5.0V
FOSC=300kHz, VOUT1=5.0V
1000
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
80
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
1
Output Current1 I OUT1 (mA)
L1=22µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
60
VIN=6.0V
40
8.0V
10V
80
60
40
VIN=6.0V
10.0V
8.0V
20
20
0
0
0.1
1
10
100
0.1
1000
1
FOSC=500kHz, VOUT1=1.0V
1000
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM Control
PWM/PFM Switching Control
Ripple Voltage1 (mV)
80
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
60
100
FOSC=500kHz, VOUT1=1.0V
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
10
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
Ripple Voltage1 (mV)
5.0V 6.0V 8.0V 10.0V
40
40
20
80
60
VIN=2.7V
40
8.0V 10V 5.0V 6.0V
4.2V
3.3V
20
0
0
0.1
1
10
100
Output Current1 I OUT1 (mA)
1000
0.1
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
23
1000
XC9505 Series
2ch. Step-Down / Inverting DCDC Controller Ics
< 1ch Step-Down DC/DC Controller >
(3) Ripple Voltage vs. Output Current (Continued)
FOSC=500kHz, VOUT1=3.3V
FOSC=500kHz, VOUT1=3.3V
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM/PFM Switching Control
80
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
PWM Control
60
8.0V 10V
6.0V
40
5.0V
VIN=4.2V
20
80
60
VIN=4.2V
5.0V
40
8.0V
6.0V
10V
20
0
0
0.1
1
10
100
0.1
1000
1
10
100
Output Current1 I OUT1 (mA)
Output Current1 I OUT1 (mA)
FOSC=500kHz, VOUT1=5.0V
FOSC=500kHz, VOUT1=5.0V
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
1000
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
PWM Control
PWM/PFM Switching Control
80
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
L1=10µH(CDRH5D28), CL1=94µF(Tantalum)
SD1:CMS02, Tr1:XP162A12A6P
100
60
40
10V
8.0V
VIN=6.0V
20
80
60
40
VIN=6.0V
8.0V
10V
20
0
0
0.1
1
10
100
1000
0.1
Output Current1 I OUT1 (mA)
1
10
100
Output Current1 I OUT1 (mA)
* When setting V OUT1=1.0V, VIN=8.0V or 10.0V,
CL=94µF (Tantalum) + 100µF (OS Capacitor)
24
1000
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
Typical Performance Characteristics
< 2ch. Inverting DC/DC Controller >
(4) Output Voltage vs. Output Current
<Ceramic Capacitor and Compact Inductor use>
FOSC=180kHz, VOUT2= -7.5V
L2=22µH(LLB2520), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
-7.3
-7.4
-7.5
-7.6
VIN=2.7V 3.3V 4.2V 5.0V
-7.7
-7.8
PWM/PFM Switching Control
PWM Control
-9.8
-10.0
-10.2
VIN=2.7V 3.3V 4.2V 5.0V
-10.4
-10.6
0.1
1
10
0.1
Output Current 2 IOUT2 (mA)
L2=47µH(LLB2520), CL2=10uF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
-7.3
PWM/PFM Switching Control
PWM Control
-7.4
-7.5
-7.6
VIN=2.7V 3.3V 4.2V 5.0V
-7.7
-7.8
0.1
1
1
Output Current 2 IOUT2 (mA)
FOSC=300kHz, VOUT2= -7.5V
Output Voltage 2 VOUT2 (V)
L2=22uH(LLB2520), CL2=10uF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
-9.6
PWM/PFM Switching Control
PWM Control
Output Voltage 2 VOUT2 (V)
Output Voltage 2 VOUT2 (V)
FOSC=180kHz, VOUT2= -10.0V
10
Output Current 2 IOUT2 (mA)
25
10
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(4) Output Voltage vs. Output Current
<Ceramic Capacitor use>
FOSC=180kHz, VOUT2= -7.5V
FOSC=180kHz, VOUT2= -10.0V
L2=100µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
L2=100µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
-9.6
PWM/PFM Switching Control
PWM Control
-7.4
Output Voltage 2 VOUT2 (V)
Output Voltage 2 VOUT2 (V)
-7.3
5.0V
4.2V
-7.5
-7.6
3.3V
VIN=2.7V
-7.7
PWM/PFM Switching Control
PWM Control
-9.8
5.0V
4.2V
-10.0
-10.2
VIN=2.7V 3.3V
-10.4
-10.6
-7.8
0.1
1
10
Output Current 2 IOUT2 (mA)
0.1
100
FOSC=180kHz, VOUT2= -7.5V
-9.6
Output Voltage 2 VOUT2 (V)
Output Voltage 2 VOUT2 (V)
100
L2=15µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
-7.4
10
FOSC=180kHz, VOUT2= -10.0V
L2=22µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
-7.3
1
Output Current 2 IOUT2 (mA)
4.2V 5.0V
-7.5
-7.6
VIN=2.7V 3.3V
-7.7
-7.8
PWM/PFM Switching Control
PWM Control
-9.8
-10.0
-10.2
VIN=2.7V 3.3V 4.2V 5.0V
-10.4
-10.6
0.1
1
10
100
0.1
Output Current 2 IOUT2 (mA)
1
10
Output Current 2 IOUT2 (mA)
26
100
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(4) Output Voltage vs. Output Current
<Tantalum Capacitor use>
FOSC=180kHz, VOUT2= -7.5V
L2=22µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
-7.3
PWM/PFM Switching Control
PWM Control
-7.4
4.2V 5.0V
-7.5
-7.6
L2=22µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
-9.6
Output Voltage 2 VOUT2 (V)
Output Voltage 2 VOUT2 (V)
FOSC=180kHz, VOUT2= -10.0V
VIN=2.7V 3.3V
-7.7
-7.8
PWM/PFM Switching Control
PWM Control
-9.8
-10.0
-10.2
VIN=2.7V 3.3V 4.2V 5.0V
-10.4
-10.6
0.1
1
10
100
1000
0.1
Output Current 2 IOUT2 (mA)
FOSC=300kHz, VOUT2= -5.0V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
-7.3
5.0V
Output Voltage 2 VOUT2 (V)
Output Voltage 2 VOUT2 (V)
-4.8
-4.9
-5.0
-5.1
VIN=2.7V 3.3V
-5.2
PWM/PFM Switching Control
PWM Control
-7.4
-7.5
-7.6
VIN=2.7V 3.3V
5.0V
-7.7
-7.8
-5.3
0.1
1
10
100
0.1
1000
1
FOSC=300kHz, VOUT2= -10.0V
1000
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
-14.6
Output Voltage 2 VOUT2 (V)
PWM/PFM Switching Control
PWM Control
-9.8
-10.0
-10.2
100
FOSC=300kHz, VOUT2= -15.0V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
-9.6
10
Output Current 2 IOUT2 (mA)
Output Current 2 IOUT2 (mA)
Output Voltage 2 VOUT2 (V)
1000
FOSC=300kHz, VOUT2= -7.5V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
1
10
100
Output Current 2 IOUT2 (mA)
VIN=2.7V 3.3V 5.0V
-10.4
-10.6
PWM/PFM Switching Control
PWM Control
-14.8
5.0V
-15.0
VIN=2.7V 3.3V
-15.2
-15.4
-15.6
0.1
1
10
100
1000
0.1
Output Current 2 IOUT2 (mA)
1
10
100
Output Current 2 IOUT2 (mA)
27
1000
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(5) Efficiency vs. Output Current
<Ceramic Capacitor and Compact Inductor use>
FOSC=180kHz, VOUT2= -7.5V
FOSC=180kHz, VOUT2= -10.0V
L2=22µH(LLB2520), C L2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
L2=22µH(LLB2520), C L2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
PWM/PFM Switching Control
PWM Control
80
Efficiency2 EFFI 2 (%)
Efficiency2 EFFI 2 (%)
PWM/PFM Switching Control
PWM Control
60
40
5.0V
4.2V
20
3.3V
80
60
40
5.0V
4.2V
3.3V
20
VIN=2.7V
VIN=2.7V
0
0
0.1
1
0.1
10
FOSC=300kHz, VOUT2= -7.5V
L2=47µH(LLB2520), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
Efficiency2 EFFI 2 (%)
PWM/PFM Switching Control
PWM Control
80
60
40
5.0V
20
VIN=2.7V
3.3V
0
0.1
1
1
Output Current 2 IOUT2 (mA)
Output Current 2 IOUT2 (mA)
10
Output Current 2 IOUT2 (mA)
28
10
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(5) Efficiency vs. Output Current (Continued)
<Ceramic Capacitor use>
FOSC=180kHz, VOUT2= -7.5V
FOSC=180kHz, VOUT2= -10.0V
L2=100µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
L2=100µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
PWM/PFM Switching Control
PWM Control
80
Efficiency2 EFFI 2 (%)
Efficiency2 EFFI 2 (%)
PWM/PFM Switching Control
PWM Control
5.0V
60
4.2V
3.3V
40
VIN=2.7V
20
80
60
4.2V
40
VIN=2.7V
20
0
0
0.1
1
10
Output Current 2 IOUT2 (mA)
0.1
100
100
10
100
FOSC=180kHz, VOUT2= -10.0V
L2=15µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
L2=22µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
4.2V
60
Efficiency2 EFFI 2 (%)
80
5.0V
3.3V
40
1
Output Current 2 IOUT2 (mA)
FOSC=180kHz, VOUT2= -7.5V
Efficiency2 EFFI 2 (%)
5.0V
3.3V
VIN=2.7V
20
80
5.0V
60
4.2V
3.3V
VIN=2.7V
40
20
0
0
0.1
1
10
0.1
100
1
10
Output Current 2 IOUT2 (mA)
Output Current 2 IOUT2 (mA)
29
100
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(5) Efficiency vs. Output Current (Continued)
<Tantalum Capacitor use>
FOSC=180kHz, VOUT2= -7.5V
L2=22µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
L2=22µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
80
Efficiency2 EFFI 2 (%)
Efficiency2 EFFI 2 (%)
100
FOSC=180kHz, VOUT2= -10.0V
5.0V
60
4.2V
40
3.3V
VIN=2.7V
20
80
60
5.0V
4.2V
40
3.3V
VIN=2.7V
20
0
0
0.1
1
10
100
0.1
1000
FOSC=300kHz, VOUT2= -5.0V
Efficiency2 EFFI 2 (%)
Efficiency2 EFFI 2 (%)
80
5.0V
3.3V
40
VIN=2.7V
20
0
PWM/PFM Switching Control
PWM Control
3.3V
80
5.0V
60
VIN=2.7V
40
20
1
10
100
1000
0.1
Output Current 2 IOUT2 (mA)
10
100
1000
FOSC=300kHz, VOUT2= -15.0V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
100
PWM/PFM Switching Control
PWM Control
Efficiency2 EFFI 2 (%)
80
60
5.0V
3.3V
40
1
Output Current 2 IOUT2 (mA)
FOSC=300kHz, VOUT2= -10.0V
Efficiency2 EFFI 2 (%)
1000
0
0.1
100
100
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
100
PWM/PFM Switching Control
PWM Control
60
10
FOSC=300kHz, VOUT2= -7.5V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
100
1
Output Current 2 IOUT2 (mA)
Output Current 2 IOUT2 (mA)
VIN=2.7V
20
0
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
80
60
5.0V
40
3.3V
VIN=2.7V
20
0
0.1
1
10
100
1000
0.1
Output Current 2 IOUT2 (mA)
1
10
100
Output Current 2 IOUT2 (mA)
30
1000
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(6) Ripple Voltage vs. Output Current
<Ceramic Capacitor and Compact Inductor use>
FOSC=180kHz, VOUT2= -7.5V
L2=22µH(LLB2520), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
80
60
VIN=2.7V
40
5.0V
4.2V 3.3V
20
60
40
4.2V 3.3V 5.0V
VIN=2.7V
0
0.1
1
10
0.1
Output Current 2 IOUT2 (mA)
L2=22µH(LLB2520), C L2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
80
60
VIN=2.7V
3.3V
5.0V
40
20
0
0.1
1
1
Output Current 2 IOUT2 (mA)
FOSC=300kHz, VOUT2= -7.5V
Ripple Voltage2 (mV)
80
20
0
100
L2=22µH(LLB2520), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
Ripple Voltage2 (mV)
Ripple Voltage2 (mV)
100
FOSC=180kHz, VOUT2= -10.0V
10
Output Current 2 IOUT2 (mA)
31
10
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(6) Ripple Voltage vs. Output Current (Continued)
<Ceramic Capacitor use>
FOSC=180kHz, VOUT2= -10.0V
FOSC=180kHz, VOUT2= -7.5V
L2=100µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
PWM/PFM Switching Control
PWM Control
80
Ripple Voltage2 (mV)
Ripple Voltage2 (mV)
100
VIN=2.7V
3.3V
4.2V
5.0V
60
40
20
L2=100µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
80
VIN=2.7V
3.3V
4.2V
5.0V
60
40
20
0
0
0.1
1
10
100
0.1
Output Current 2 IOUT2 (mA)
100
PWM/PFM Switching Control
PWM Control
80
Ripple Voltage2 (mV)
Ripple Voltage2 (mV)
L2=22µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
60
5.0V
4.2V
VIN=2.7V
40
10
100
FOSC=180kHz, VOUT2= -10.0V
FOSC=180kHz, VOUT2= -7.5V
100
1
Output Current 2 IOUT2 (mA)
20
L2=15µH(CDRH4D18C), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
80
5.0V
60
3.3V
40
VIN=2.7V
20
4.2V
3.3V
0
0
0.1
1
10
100
0.1
Output Current 2 IOUT2 (mA)
1
10
Output Current 2 IOUT2 (mA)
32
100
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(6) Ripple Voltage vs. Output Current (Continued)
<Tantalum Capacitor use>
FOSC=180kHz, VOUT2= -7.5V
L2=22µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
100
PWM/PFM Switching Control
PWM Control
80
60
Ripple Voltage2 (mV)
Ripple Voltage2 (mV)
100
FOSC=180kHz, VOUT2= -10.0V
VIN=2.7V
5.0V
40
3.3V
4.2V
60
40
3.3V 5.0V
20
0
0
1
10
100
PWM/PFM Switching Control
PWM Control
80
20
0.1
L2=22µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
1000
0.1
Ripple Voltage2 (mV)
Ripple Voltage2 (mV)
100
80
5.0V
3.3V
20
PWM/PFM Switching Control
PWM Control
80
60
5.0V
40
3.3V
VIN=2.7V
0
0.1
1
10
100
1000
0.1
Output Current 2 IOUT2 (mA)
100
PWM/PFM Switching Control
PWM Control
Ripple Voltage2 (mV)
80
60
3.3V
10
100
1000
FOSC=180kHz, VOUT2= -15.0V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
40
1
Output Current 2 IOUT2 (mA)
FOSC=300kHz, VOUT2= -10.0V
Ripple Voltage2 (mV)
1000
20
0
100
100
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
VIN=2.7V
10
FOSC=300kHz, VOUT2= -7.5V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
40
1
Output Current 2 IOUT2 (mA)
FOSC=300kHz, VOUT2= -5.0V
60
4.2V
PWM/PFM Switching Control
PWM Control
Output Current 2 IOUT2 (mA)
100
VIN=2.7V
5.0V
VIN=2.7V
20
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:CRS02, Tr2:XP152A12C0MR
PWM/PFM Switching Control
PWM Control
80
60
5.0V
40
VIN=2.7V
3.3V
20
0
0
0.1
1
10
100
1000
0.1
Output Current 2 IOUT2 (mA)
1
10
100
Output Current 2 IOUT2 (mA)
33
1000
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(7) Breakdown of Output Voltage
FOSC=300kHz,VIN= 3.3V
FOSC=300kHz,VIN= 3.3V
L2=47µH(LLB2520), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
L2=47µH(LLB2520), CL2=10µF(ceramic)
SD2:CRS02, Tr2:XP152A12C0MR
100
PWM/PFM Switching Control
PWM Control
80
80
Ripple Voltage2 (mV)
-10.0V
-7.5V
60
40
-15.0V
VOUT= -5.0V
20
VOUT= - 5.0V
-7.5V
-10.0V
-15.0V
60
40
20
0
0
0.1
1
10
0.1
Output Current 2 IOUT2 (mA)
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
100
PWM Control
PWM Control
VOUT=-5.0V
VOUT=-5.0V
80
Ripple Voltage2 (mV)
Efficiency2 EFFI 2 (%)
10
FOSC=300kHz,VIN= 3.3V
L2=15µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737,Tr2:XP162A12A6P
100
1
Output Current 2 IOUT2 (mA)
FOSC=300kHz,VIN= 3.3V
-7.5V
60
-10.0V
40
-15.0V
80
-7.5V
-10.0V
60
-15.0V
40
20
20
0
0
0.1
1
10
100
0.1
1000
L2=10µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737,Tr2:XP162A12A6P
PWM Control
100
1000
L2=10µH(CDRH5D28), CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
100
PWM Control
VOUT=-5.0V
60
Ripple Voltage2 (mV)
80
-7.5V
-10.0V
40
10
FOSC=500kHz,VIN= 3.3V
FOSC=500kHz,VIN= 3.3V
100
1
Output Current 2 IOUT2 (mA)
Output Current 2 IOUT2 (mA)
Efficiency2 EFFI 2 (%)
Efficiency2 EFFI 2 (%)
PWM/PFM Switching Control
PWM Control
-15.0V
VOUT=-5.0V
80
-7.5V
60
-10.0V
-15.0V
40
20
20
0
0
0.1
1
10
100
0.1
1000
1
10
100
Output Current 2 IOUT2 (mA)
Output Current 2 IOUT2 (mA)
34
1000
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2ch. Inverting DC/DC Controller >
(8) Breakdown of Coil Inductance Value
FOSC=300kHz,VIN3.3V,Output2= -7.5V
FOSC=300kHz,VIN=3.3V,Output2= -7.5V
L2=CDRH5D28, CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12C0MR
100
L2=CDRH5D28, CL2=94µF(Tantalum)
SD2:MA2Q737, Tr2:XP162A12A6P
100
PWM Control
PWM Control
Ripple Voltage2 (mV)
Efficiency2 EFFI 2 (%)
100uH
80
L=15u
60
22uH
40
100uH
20
80
60
47uH
22u
40
L=15u
20
47u
0
0
0.1
1
10
100
1000
1
Output Current 2 IOUT2 (mA)
10
100
Output Current 2 IOUT2 (mA)
35
1000
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
! Typical Performacen Characteristics (Continued)
(9) Supply Current 1 vs. Supply Voltage
(10) Supply Current 1-1 vs. Supply Voltage
XC9505B092 (180KHz)
XC9505B092 (180KHz)
Supply Current 1-1 IDD1-1 (µA)
Supply Current 1 IDD1 (µA)
300
Topr=85o C
25o C
-40o C
250
200
150
100
50
0
0
2
4
6
8
200
Topr=85o C
25o C
-40o C
150
100
50
0
0
10
2
(11) Supply Current 1-2 vs. Supply Voltage
Supply Current 1-3 IDD1-3 (µA)
Supply Current 1-2 IDD1-2 (µA)
Topr=85o C
25o C
-40o C
150
100
50
0
2
4
6
10
8
250
Topr=85o C
25o C
-40o C
200
150
100
50
0
10
0
Supply Voltage VDD (V)
2
4
6
8
10
Supply Voltage VDD (V)
(13) Supply Current 1-4 vs. Supply Voltage
(14) Supply Current 2 vs. Supply Voltage
XC9505B092 (180KHz)
XC9505B092 (180KHz)
250
300
Supply Current 2 IDD2 (µA)
Supply Current 1-4 IDD1-4 (µA)
8
XC9505B095 (180KHz)
250
0
6
(12) Supply Current 1-3 vs. Supply Voltage
XC9505B092 (180KHz)
200
4
Supply Voltage VDD (V)
Supply Voltage VDD (V)
o
Topr=85 C
25o C
-40o C
250
200
150
100
50
Topr=85o C
25o C
-40o C
200
150
100
50
0
0
0
2
4
6
8
0
10
2
4
6
8
Supply Voltage VDD (V)
Supply Current VDD (V)
36
10
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
(15) Stand-by Current vs. Supply Voltage
(16) Oscillation Frequency vs. Supply Voltage
XC9505B092 (180kHz)
XC9505B092 (180kHz)
Oscillation Frequency Fosc (kHz)
Stand-by Current ISTB (µA)
10
Topr=85o C
25o C
-40o C
8
6
4
2
0
0
2
4
6
8
210
200
Topr=25o C
190
180
170
85o C
160
-40o C
150
10
0
Supply Voltage VDD (V)
6
8
10
(18) EN1, 2 'H''L' Voltage vs. Supply Voltage
XC9505B092 (180kHz)
XC9505B092 (180KHz)
0.8
0.8
0.6
EN1, 2 'H'' L' Voltage
VPWM1, 2 (V)
PWM1, 2 'H'' L' Voltage
VPWM1,2 (V)
4
Supply Voltage VDD (V)
(17) PWM1, 2 'H''L' Voltage vs. Supply Voltage
- 40oC
0.4
85o C
0.2
Topr=25o C
0
0.6
- 40oC
0.4
85o C
o
Topr=25 C
0.2
0
0
2
4
6
8
10
0
Supply Voltage VDD (V)
2
4
6
8
10
Supply Voltage VDD (V)
(19) Maximum Duty Ratio 2 vs. Supply Voltage
(20) Soft-start Time vs. Supply Voltage
XC9505B092 (180kHz)
XC9505B092 (180kHz)
25
90
Soft-start Time TSS1 (msec)
Maximum Duty Ratio2 Maxdty2
(%)
2
85
80
75
o
Topr=85 C
25o C
- 40o C
70
2
4
15
10
5
0
65
0
20
6
8
0
10
2
4
6
8
Supply Voltage VDD (V)
Supply Voltage VDD (V)
37
10
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
(21) EXT1, 2 High ON Resistance vs. Supply Voltage
(22) EXT1, 2 Low ON Resistance vs. Supply Voltage
XC9505B092 (180kHz)
50
EXT1, 2 L ON Resistance (Ω)
EXT1, 2 H ON Resistance (Ω)
XC9505B092 (180kHz)
o
Topr=85 C
25o C
- 40o C
40
30
20
10
0
0
2
4
6
8
50
Topr=85o C
25o C
- 40o C
40
30
20
10
0
0
10
(23) Output Voltge vs. Ambient Temperature
6
8
10
(24) PFM Duty Ratio1, 2 vs. Supply Voltage
XC9505B093(300kHz)
XC9505B092(180kHz)
L=22uH(CDRH5D28), CL=94uF(Tantalum)
Tr:XP162A12A6, SD:CMS02
40
PFM Duty Ratio1, 2 (%)
Output Voltage VOUT (V)
4
Supply Voltage VDD (V)
Supply Voltage VDD (V)
3.5
2
3.4
3.3
3.2
VIN=5.0V
IOUT=200mA
3.1
3.0
Topr=85o C
25o C
- 40o C
35
30
25
20
-50
-20
10
40
70
100
0
Ambient Temterature Ta ( 0 C)
2
4
6
8
Supply Voltage VDD (V)
38
10
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
! Load Transient Response
< 1 ch. Step-Up DC/DC Controller >
< VOUT1 = 3.3V, VIN = 5.0V
IOUT1 =100µA ! 300mA >
" PWM Control
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
VIN=5.0V, IOUT1=300mA→100µA
VIN=5.0V, IOUT1=100µA→ 300mA
3.3V
CH1
CH1
3.3V
300mA
100µA
CH2
300mA
100µA
CH2
200µsec/div
CH1:VOUT1 , AC-COUPLED, 100mV/div
CH2:IOUT1 , 150mA/div
10msec/div
CH1:VOUT1 , AC-COUPLED, 50mV/div
CH2:IOUT1 , 150mA/div
" PWM/PFM Switching Control
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
VIN=5.0V, IOUT1=100µA→ 300mA
VIN=5.0V, IOUT1=300mA→100µA
3.3V
CH1
CH1
3.3V
300mA
100µA
CH2
300mA
100µA
CH2
200µsec/div
CH1:VOUT1 , AC-COUPLED, 100mV/div
CH2:IOUT1 , 150mA/div
10msec/div
CH1:VOUT1 , AC-COUPLED, 100mV/div
CH2:IOUT1 , 150mA/div
39
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 1 ch. Step-Up DC/DC Controller >
< VOUT1 = 3.3V, VIN = 5.0V
IOUT1 =10mA ! 300mA >
" PWM Control
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
VIN=5.0V, IOUT1=10mA→ 300mA
VIN=5.0V, IOUT1=300mA→10mA
3.3V
CH1
CH1
3.3V
300mA
300mA
10mA
CH2
CH2
200µsec/div
CH1:VOUT1 , AC-COUPLED, 50mV/div
CH2:IOUT1 , 150mA/div
10mA
400µsec/div
CH1:VOUT1 , AC-COUPLED, 50mV/div
CH2:IOUT1 , 150mA/div
"PWM/PFM Switching Control
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
VIN=5.0V, IOUT1=10mA→ 300mA
CH1
VIN=5.0V, IOUT1=300mA→10mA
3.3V
3.3V
CH1
300mA
300mA
10mA
CH2
CH2
200µsec/div
10mA
200µsec/div
CH1:VOUT1 , AC-COUPLED, 50mV/div
CH2:IOUT1 , 150mA/div
CH1:VOUT1 , AC-COUPLED, 100mV/div
CH2:IOUT1 , 150mA/div
40
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 1 ch. Step-Up DC/DC Controller >
< VOUT1 = 0.9V, VIN = 3.3V
IOUT1 =100µA ! 300mA >
" PWM Control
FOSC=300kHz, VOUT1=0.9V
FOSC=300kHz, VOUT1=0.9V
VIN=3.3V, IOUT1=100µA→ 300mA
VIN=3.3V, IOUT1=300mA→100µA
CH1
0.9V
0.9V
CH1
300mA
100µA
CH2
300mA
100µA
CH2
200µsec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT1 , 150mA/div
4msec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT1 , 150mA/div
" PWM/PFM Switching Control
FOSC=300kHz, VOUT1=0.9V
FOSC=300kHz, VOUT1=0.9V
VIN=3.3V, IOUT1=300mA→100µA
VIN=3.3V, IOUT1=100µA→ 300mA
0.9V
CH1
CH1
0.9V
300mA
100µA
CH2
300mA
100µA
CH2
200µsec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT1 , 150mA/div
4msec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT1 , 150mA/div
41
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 1 ch. Step-Up DC/DC Controller >
< VOUT1 = 0.9V, VIN = 3.3V
IOUT1 =10mA ! 300mA >
" PWM Control
FOSC=300kHz, VOUT1=0.9V
FOSC=300kHz, VOUT1=0.9V
VIN=3.3V, IOUT1=10mA→ 300mA
VIN=3.3V, IOUT1=300mA→ 10mA
CH1
0.9V
0.9V
CH1
300mA
300mA
10mA
CH2
10mA
CH2
100µsec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT1 , 150mA/div
100µsec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT , 150mA/div
" PWM/PFM Switching Control
FOSC=300kHz, VOUT1=0.9V
FOSC=300kHz, VOUT1=0.9V
VIN=3.3V, IOUT1=300mA→ 10mA
VIN=3.3V, IOUT1=10mA→ 300mA
CH1
0.9V
0.9V
CH1
300mA
300mA
10mA
CH2
10mA
CH2
200µsec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT1 , 150mA/div
200µsec/div
CH1:VOUT1 , AC-COUPLED, 20mV/div
CH2:IOUT1 , 150mA/div
42
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 1 ch. Step-Up DC/DC Controller >
< PWM Control ! PWM / PFM Switching Control >
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
VIN=5.0V, IOUT1=5mA PWM1 ’L’→’H’
VIN=5.0V, IOUT1=5A PWM1 ’H’→’L’
3.3V
CH1
3.3V
CH1
0.65V
0.65V
0V
CH2
CH2
0V
200µsec/div
CH1:VOUT1, AC-COUPLED ,20mV/div
CH2:PWM1, 0.5V/div
400µsec/div
CH1:VOUT1 , AC-COUPLED ,10mV/div
CH2:PWM1 , 0.5V/div
< Soft-Start Wave Form >
FOSC=300kHz, VOUT1=3.3V
FOSC=300kHz, VOUT1=3.3V
VIN=5.0V, IOUT1=300mA
EN1 ’L’→’H’, CIN=47µF
VIN=5.0V, IOUT1=100mA
EN1 ’L’→’H’, CIN=47µF
3.3V
3.3V
CH1
CH1
200mA
75mA
CH2
CH2
0.65V
0.65V
CH3
CH3
4ms/div
CH1:VOUT1 , 2.0V/div
CH2:IIN1, 100mA/div
CH3:EN1 , 0.5V/div
4ms/div
CH1:VOUT1 , 2.0V/div
CH2:IIN1, 50mA/div
CH3:EN1 , 0.5V/div
* EN2=GND
43
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2 ch. Inverting DC/DC Controller >
< VOUT2 = - 7.5V, VIN = 3.3V
IOUT2 = - 100µA ! - 50mA >
(Tantalum Capacitor use)
! PWM Control
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2=-100µA→ -50mA
CH1
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2=-50mA→ -100µA
-7.5V
CH1
-7.5V
-50mA
-100µA
CH2
-50mA
-100µA
CH2
10msec/div
CH1:VOUT2 , AC-COUPLED, 50mV/div
CH2:IOUT2 , 50mA/div
200µsec/div
CH1:VOUT2 , AC-COUPLED, 50mV/div
CH2:IOUT2 , 50mA/div
! PWM/PFM Switching Control
FOSC=180kHz, VOUT2=-7.5V
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2=-100µA→ -50mA
VIN=3.3V, IOUT2=-50mA→ -100µA
-7.5V
CH1
-7.5V
CH1
-50mA
-100µA
CH2
-50mA
-100µA
CH2
10msec/div
CH1:VOUT2 , AC-COUPLED, 50mV/div
CH2:IOUT2 , 50mA/div
200µsec/div
CH1:VOUT2 , AC-COUPLED, 50mV/div
CH2:IOUT2 , 50mA/div
44
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2 ch. Inverting DC/DC Controller >
< VOUT2 = - 7.5V, VIN = 3.3V
IOUT2 = - 100µA ! - 20mA >
(Ceramic Capacitor use when coil current is discontinued.)
" PWM Control
FOSC=180kHz, VOUT2=-7.5V
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2=-20mA→ -100µA
VIN=3.3V, IOUT2=-100µA→ -20mA
CH1
-7.5V
CH1
-7.5V
-20mA
-100µA
CH2
-20mA
-100µA
CH2
1msec/div
CH1:VOUT2 , AC-COUPLED, 20mV/div
CH2:IOUT2 , 10mA/div
200µsec/div
CH1:VOUT2 , AC-COUPLED, 20mV/div
CH2:IOUT2 , 10mA/div
" PWM/PFM Switching Control
FOSC=180kHz, VOUT2=-7.5V
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2=-100µA→ -20mA
VIN=3.3V, IOUT2=-20mA→ -100µA
-7.5V
CH1
-7.5V
CH1
-20mA
-100µA
CH2
-20mA
-100µA
CH2
2msec/div
CH1:VOUT2 , AC-COUPLED, 50mV/div
CH2:IOUT2 , 10mA/div
200µsec/div
CH1:VOUT2 , AC-COUPLED, 50mV/div
CH2:IOUT2 , 10mA/div
45
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2 ch. Inverting DC/DC Controller >
< VOUT2 = - 7.5V, VIN = 3.3V
IOUT2 = - 1mA ! - 20mA >
" PWM Control
FOSC=180kHz, VOUT2=-7.5V
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2=-1mA→ -20mA
VIN=3.3V, IOUT2=-20mA→ -1mA
CH1
-7.5V
CH1
-7.5V
-20mA
-1mA
CH2
-20mA
CH2
-1mA
200µsec/div
200µsec/div
CH1:VOUT2 , AC-COUPLED, 20mV/div
CH2:IOUT2 , 10mA/div
CH1:VOUT2 , AC-COUPLED, 20mV/div
CH2:IOUT2 , 10mA/div
" PWM / PFM Switching Control
FOSC=180kHz, VOUT2=-7.5V
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2=-1mA→ -20mA
VIN=3.3V, IOUT2=-20mA→ -1mA
CH1
-7.5V
CH1
-7.5V
-20mA
-20mA
CH2
-1mA
CH2
-1mA
400µsec/div
400µsec/div
CH1:VOUT2 , AC-COUPLED, 20mV/div
CH2:IOUT2 , 10mA/div
CH1:VOUT2 , AC-COUPLED, 20mV/div
CH2:IOUT2 , 10mA/div
46
XC9505 Series
2ch. Step-Down / Inverting DC/DC Controller ICs
< 2 ch. Inverting DC/DC Controller >
< PWM Control ! PWM / PFM Switching Control >
FOSC=180kHz, VOUT2=-7.5V
FOSC=180kHz, VOUT2=-7.5V
VIN=3.3V, IOUT2= - 5mA PWM2 ’L’"’H’
VIN=3.3V, IOUT2= - 5mA PWM2 ’H’"’L’
CH1
-7.5V
CH1
-7.5V
0.65V
0.65V
CH2
0V
CH2
200µsec/div
0V
200µsec/div
CH1:VOUT2 , AC-COUPLED ,20mV/div
CH2:PWM 2 , 0.5V/div
CH1:VOUT2, AC-COUPLED ,20mV/div
CH2:PWM 2, 0.5V/div
47