XC9501 Series
2ch. Step-up DC/DC Controller ICs.
Mar. 17, 2003 Ver. 5
! Applications
# PDAs
# Palm top computers
# Portable Audio Systems
# Various Multi-function Power Supplies
" 2ch DC/DC Controller (Step-up + Step-up)
" Input Voltage Range 0.9V ~ 10.0V
" Output Voltage Externally Set-Up
" Switching Frequency 180kHz (±15%)
" Max Duty Ratio 80% (TYP.)
" PWM, PWM/PFM Switching Control
" High Efficiency 83% (TYP.)
" MSOP-10 Package
! Features
Switching Frequency
:180kHz ±15%
:300kHz & 500kHz available as custom
Output Current
Stand-by Current
Soft-start internally set-up
MSOP-10 Package
:more than 200mA(VIN=1.8V, VOUT=3.3V)
:3.0µA (MAX)
! Typical Performance Characteristics
Efficiency vs. Output Current
XC9501B092A (180kHz,3.3V)
L1=22µH(CDRH5D28), CL1=47µF(Tantalum)
SD1:MA2Q737, Tr1:XP161A1355P
Efficiency 1 EFFI1 (%)
! General Description
The XC9501 series are PWM controlled, PWM/PFM automatic
switching controlled, multi-functional, dual step-up DC/DC
converter controller ICs.
With 0.9V (±2%) of standard voltage supply internal, and using
externally connected components, output voltage can be set
freely on both DC/DC controllers between 1.5V to 30V.
With a 180kHz frequency, the size of the external components
can be reduced. 300kHz and 500kHz switching frequencies
are also available as custom-designed products.
The control of the XC9501 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 to large output currents.
Noise is easily reduced with PWM control since the switching
frequency is fixed.
The XC9501 series provides the option of being able to select
the control suited to the application.
Input Voltage Range
:0.9V ~ 10V
Power Supply Voltage Range :2.0V ~ 10V
Output Voltage Range
:1.5V ~ 30V
Can be set freely with 0.9V(±
2.0%) of reference voltage
supply & external components.
Soft-start time is internally set to 10msec which offers
protection against rush currents when the power is switched on
and also against voltage overshoot.
100
90
80
70
60
50
40
30
20
10
0
PWM/PFM Switching Control
VIN=1.8V
PWM Control
0.1
V OUT1=3.3V
IOUT1=~200mA
Input: 2 cells, Output
SD1
:MA2Q737
L1:22uH
CDRH5D28
L2:22µH
CDRH5D28
SD2
:MA2Q737
100
CFB2
47µF
?
VPWM1
VEN1
GND 9
3 FB1
FB2 8
5 EN1
RFB21
:82kΩ
EXT2 10
2 VDD
4 PWM1
VOUT2=5.0V
IOUT2=~100mA
Tr2:Nch MOSFET
XP161A1355P
:160pF
+
RFB12
:75kΩ
CIN
:47µF
CFB1
:62pF
1 EXT1
CL1
10
1: 3.3V, Output 2: 5.0V )
VIN
Tr1:Nch
=1.8V~3.2V
MOSFETXP161A1355P
RFB11
:200kΩ
1
Output Current 1 IOUT1 (mA)
! Typical Application
( XC9501B092A
2.4V
PWM2 7
EN2 6
1
+
47µF CL2
V PWM2
V EN2
RFB22
:18kΩ
1000
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Pin Configuration
1 EXT1
EXT2 10
2 VDD
GND 9
3 FB1
FB2 8
4 PWM1
PWM2 7
5 EN1
EN2 6
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 VDD when Output 1 is in stand-by mode.
Connected to VDD when Output 1 is active. EXT1 is low 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.EXT1 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 Ground.>
9
GND
Ground
10
EXT 2
Channel 2 : External Transistor Drive Pin <Connected to Nch Power MOSFET Gate>
Channel 1: External Transistor Drive Pin <Connected to Nch Power MOSFET Gate>
! Ordering Information
XC9501123456
DESIGNATOR
1
2
3
SYMBOL
DESCRIPTION
B
Standard (10 Pin)
0
9
FB Voltage
0.9V
Switching Frequency
4
2
180kHz
3
300kHz (custom)
5
500kHz (custom)
5
A
Package
MSOP-10
6
R
Embossed Tape
Standard Feed
L
Embossed Tape
Reverse Feed
2
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Block Diagram
PWM/PFM
Controller 1
EXT1
PWM/PFM
Controller 2
PWM
Comparator2
PW
Comparator1
M
VDD
+
FB1
-
EXT2
-
GND
+
+
Error Amp1
FB2
+
Ramp Wave Error Amp2
Generator 2
Ramp Wave
Generator 1
PWM1
PWM2
OSC
Generator
Vref1 = 0.9V
with Soft Start1,
EN1
EN1 to
internal circuit
EN1
EN2 to
internal circuit
Vref2 = 0.9V
with Soft Start 1,
EN2
EN2
! Absolute Maximum Ratings
Ta=25OC
PARAMETER
SYMBOL
RATINGS
UNITS
VDD Pin Voltage
VDD
- 0.3 ~ 12
V
FB1, 2 Pin Voltage
VFB
- 0.3 ~ 12
V
EN1, 2 Pin Voltage
VEN
- 0.3 ~ 12
V
PWM1,2 Pin Voltage
VPWM
- 0.3 ~ 12
V
EXT1, 2 Pin Voltage
VEXT
- 0.3 ~ VDD + 0.3
V
EXT1, 2 Pin Current
IEXT
± 100
mA
Power Dissipation
Pd
150
mW
Operating Ambient Temperature
Topr
- 40 ~ + 85
O
- 55 ~ + 125
O
Storage Temperature
Tstg
3
C
C
XC9501 Series
! Electrical Characteristics
2ch. Step-up DC/DC Controller ICs.
XC9501B092A
Common Characteristics
PARAMETER
Supply Voltage (note 1)
Output Voltage Range
(note 4)
Supply Current 1
Supply Current 1-1
Supply Current 1-2
Supply Current 2
Stand-by Current
Switching Frequency
EN1,2 "High" Voltage
EN1,2 "Low" Voltage
EN1,2 "High" Current
EN1,2 "Low" Current
PWM1,2 "High" Current
PWM1,2 "Low" Current
FB1,2 "High" Current
FB1,2 "Low" Current
Ta=25OC
(FOSC=180kHz)
SYMBOL
VDD
CONDITIONS
VDD ≥ 2.0V, IOUT1, 2 =1mA
VOUT1, VOUT2
VOUT1
VIN ≥ 0.9V, IOUT1, 2=1mA
VOUTSET (note 2)
VOUT2
VOUT1
VIN ≥ 0.9V, IOUT1, 2=1mA
VOUT2
(note 3)
IDD1
FB1,2=0V
EN1=3.0V, EN2=0V, FB1=0V
IDD1-1
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
IDD1-2
FB1=1.0V, FB2=0V
IDD2
FB1,2=1.0V
ISTB
Same as I DD1, EN1=EN2=0V
FOSC Same as I DD1
VENH FB1,2=0V
VENL
FB1,2=0V
IENH
FB1,2=3.0V
IENL
EN1,2=0V, FB1,2=3.0V
IPWMH FB1,2=3.0V, PWM=3.0V
IPWML FB1,2=3.0V,PWM=0V
IFBH
FB1,2=3.0V
VFBL
FB1,2=1V
TEST
CIRCUIT
MIN.
2.0
0.9
2.0
0.9
0.9
2.0
-
TYP.
90
-
60
120
µA
4
-
80
150
µA
4
-
70
132
153
0.65
-
180
-
3.0
207
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
4
4
4
4
4
4
4
4
4
4
4
MAX. UNITS
10.0
V
V
10.0
V
V
V
10.0
V
160
µA
1
2
3
4
Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
Ta=25OC
Step-up Controller
PARAMETER
FB1 Voltage
Operation Start-up
Voltage1
SYMBOL
CONDITIONS
VFB1
VDD=3.0V, VIN=1.5V, IOUT1=10mA
Using Tr: 2SD1628,
VST1-1 IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
(note 2)
VDD ≠ VOUT1: IOUT1=1mA
VST2-1 FB1=0V
Oscillation Start-up Voltage1
MAXDTY1 Same as I DD1
Maximum Duty Ratio1
PFMDTY1 No Load, VPWM1=0V
PFM Duty Ratio1
EFFI1
Efficiency1
IOUT1=100mA Nch MOSFET:XP161A1355P
TSS1
VOUT1 × 0.95V, CE1=0V→0.65V
Soft-Start Time1
EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V
EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V
VPWMH1 No Load
PWM1 "High" Voltage
VPWML1 No Load
PWM1 "Low" Voltage
TEST
CIRCUIT
MIN.
0.882
TYP.
0.900
-
-
0.9
V
2
75
22
5.0
0.65
-
80
30
83
10.0
28
22
-
2.0
0.8
85
38
20.0
47
30
0.20
V
V
%
%
%
mS
Ω
Ω
V
V
1
4
4
6
6
6
7
7
6
6
MAX. UNITS
0.918
V
5
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
Ta=25OC
Step-up Controller
PARAMETER
FB2 Voltage
Operation Start-up
Voltage2
SYMBOL
CONDITIONS
VDD=3.0V, VIN=1.5V, IOUT2=10mA
VFB2
Using Tr: 2SD1628,
VST1-2 IOUT2=1.0mA, RFB21=200kΩ,RFB22=75kΩ
(note 3)
VDD ≠ VOUT2 : IOUT2=1mA
VST2-2 FB2=0V
Oscillation Start-up Voltage2
MAXDTY2 Same as I DD1
Maximum Duty Ratio2
PFMDTY2 No Load, VPWM 2=0V
PFM Duty Ratio2
EFFI2
IOUT2=100mA, Nch MOSFET:XP161A1355P
Efficiency2
TSS2
VOUT2 × 0.95V, EN2=0V→0.65V
Soft-Start Time2
EXT2 "High" ON Resistance REXTBH2 FB2=0, EXT2=VDD-0.4V
EXT2 "Low" ON Resistance REXTBL2 EN2=FB2=0V, EXT2=0.4V
VPWMH2 No Load
PWM2 "High" Voltage
VPWML2 No Load
PWM2 "Low" Voltage
TYP.
0.900
-
-
0.9
V
3
75
22
5.0
0.65
-
80
25
83
10.0
28
22
-
2.0
0.8
85
38
20.0
47
30
0.20
V
V
%
%
%
mS
Ω
Ω
V
V
1
4
4
9
9
9
7
7
9
9
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
4
MAX. UNITS
V
0.918
TEST
CIRCUIT
MIN.
0.882
8
XC9501 Series
! Electrical Characteristics
Common Characteristics
PARAMETER
Supply Voltage (note 1)
Output Voltage Range
(note 4)
Supply Current 1
Supply Current 1-1
Supply Current 1-2
Supply Current 2
Stand-by Current
Switching Frequency
EN1,2 "High" Voltage
EN1,2 "Low" Voltage
EN1,2 "High" Current
EN1,2 "Low" Current
PWM1,2 "High" Current
PWM1,2 "Low" Current
FB1,2 "High" Current
FB1,2 "Low" Current
SYMBOL
VDD
2ch. Step-up DC/DC Controller ICs.
XC9501B093A
CONDITIONS
VDD ≥ 2.0V, IOUT1, 2 =1mA
VOUT1, VOUT2
VOUT1
VIN ≥ 0.9V, IOUT1, 2=1mA
VOUTSET (note 2)
VOUT2
VOUT1
VIN ≥ 0.9V, IOUT1, 2=1mA
VOUT2
(note 3)
IDD1
FB1,2=0V
EN1=3.0V, EN2=0V, FB1=0V
IDD1-1 EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
IDD1-2 FB1=1.0V, FB2=0V
IDD2
FB1,2=1.0V
ISTB
Same as I DD1, EN1=EN2=0V
Same
as I DD1
FOSC
VENH FB1,2=0V
VENL
FB1,2=0V
IENH
FB1,2=3.0V
IENL
EN1,2=0V, FB1,2=3.0V
IPWMH FB1,2=3.0V, PWM=3.0V
IPWML FB1,2=3.0V,PWM=0V
IFBH
FB1,2=3.0V
VFBL
FB1,2=1V
(FOSC=300kHz)
Ta=25OC
MIN. TYP. MAX. UNITS CIRCUIT
10.0
V
2.0
0.9
V
1
2.0
10.0
V
2
V
0.9
0.9
V
3
2.0
10.0
V
110
250
µA
4
-
80
150
µA
4
-
90
200
µA
4
-
80
160
255
0.65
-
300
-
3.0
345
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
4
4
4
4
4
4
4
4
4
4
4
Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
Operation Start-up
Voltage1
SYMBOL
VFB1
VST1-1
(note 2)
VST2-1
M
AXDTY1
Maximum Duty Ratio1
PFMDTY1
PFM Duty Ratio1
EFFI1
Efficiency1
TSS1
Soft-Start Time1
EXT1 "High" ON Resistance REXTBH1
EXT1 "Low" ON Resistance REXTBL1
VPWMH1
PWM1 "High" Voltage
VPWML1
PWM1 "Low" Voltage
Oscillation Start-up Voltage1
Step-up Controller
CONDITIONS
VDD=3.0V, VIN=1.5V, IOUT1=10mA
Using Tr: 2SD1628,
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
VDD ≠ VOUT1: IOUT1=1mA
FB1=0V
Same as I DD1
No Load, VPWM1=0V
IOUT1=100mA, Nch MOSFET:XP161A1355P
VOUT1 × 0.95V, CE1=0V→0.65V
FB1=0, EXT1=VDD-0.4V
EN1=FB2=0V, EXT1=0.4V
No Load
No Load
Ta=25OC
MAX. UNITS CIRCUIT
5
0.918
V
MIN.
0.882
TYP.
0.900
-
-
0.9
V
2
75
22
5.0
0.65
-
80
30
83
10.0
28
22
-
2.0
0.8
85
38
20.0
47
30
0.20
V
V
%
%
%
mS
Ω
Ω
V
V
1
4
4
6
6
6
7
7
6
6
MIN.
0.882
TYP.
0.900
Ta=25OC
MAX. UNITS CIRCUIT
8
0.918
V
-
-
0.9
V
3
75
22
5.0
0.65
-
80
30
83
10.0
28
22
-
2.0
0.8
85
38
20.0
47
30
0.20
V
V
%
%
%
mS
Ω
Ω
V
V
1
4
4
9
9
9
7
7
9
9
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
SYMBOL
VFB2
VST1-2
(note 3)
VST2-2
MAXDTY2
Maximum Duty Ratio2
PFMDTY2
PFM Duty Ratio2
EFFI2
Efficiency2
TSS2
Soft-Start Time2
EXT2 "High" ON Resistance REXTBH2
EXT2 "Low" ON Resistance REXTBL2
VPWMH2
PWM2 "High" Voltage
VPWML2
PWM2 "Low" Voltage
Oscillation Start-up Voltage2
Step-up Controller
CONDITIONS
VDD=3.0V, VIN=1.5V, IOUT2=10mA
Using Tr: 2SD1628,
IOUT2=1.0mA, RFB21=200kΩ,RFB22=75kΩ
VDD ≠ VOUT2 : IOUT2=1mA
FB2=0V
Same as I DD1
No Load, VPWM 2=0V
IOUT2=100mA, Nch MOSFET:XP161A1355P
VOUT2 × 0.95V, EN2=0V→0.65V
FB2=0, EXT2=VDD-0.4V
EN2=FB2=0V, EXT2=0.4V
No Load
No Load
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
5
XC9501 Series
! Electrical Characteristics
Common Characteristics
PARAMETER
Supply Voltage (note 1)
Output Voltage Range
(note 4)
Supply Current 1
Supply Current 1-1
Supply Current 1-2
Supply Current 2
Stand-by Current
Switching Frequency
EN1,2 "High" Voltage
EN1,2 "Low" Voltage
EN1,2 "High" Current
EN1,2 "Low" Current
PWM1,2 "High" Current
PWM1,2 "Low" Current
FB1,2 "High" Current
FB1,2 "Low" Current
SYMBOL
VDD
2ch. Step-up DC/DC Controller ICs.
XC9501B095A
CONDITIONS
VDD ≥ 2.0V, IOUT1, 2 =1mA
VOUT1, VOUT2
VOUT1
VIN ≥ 0.9V, IOUT1, 2=1mA
VOUTSET (note 2)
VOUT2
VOUT1
VIN ≥ 0.9V, IOUT1, 2=1mA
VOUT2
(note 3)
IDD1
FB1,2=0V
EN1=3.0V, EN2=0V, FB1=0V
IDD1-1
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
IDD1-2
FB1=1.0V, FB2=0V
IDD2
FB1,2=1.0V
ISTB
Same as I DD1, EN1=EN2=0V
Same
as I DD1
FOSC
VENH FB1,2=0V
VENL
FB1,2=0V
IENH
FB1,2=3.0V
IENL
EN1,2=0V, FB1,2=3.0V
IPWMH FB1,2=3.0V, PWM=3.0V
IPWML FB1,2=3.0V,PWM=0V
IFBH
FB1,2=3.0V
VFBL
FB1,2=1V
(FOSC=500kHz)
Ta=25OC
MIN. TYP. MAX. UNITS CIRCUIT
10.0
V
2.0
0.9
V
1
2.0
10.0
V
2
V
0.9
0.9
V
3
2.0
10.0
V
165
350
µA
4
-
110
220
µA
4
-
130
270
µA
4
-
100
200
425
0.65
-
500
-
3.0
575
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
µA
µA
kHz
V
V
µA
µA
µA
µA
µA
µA
4
4
4
4
4
4
4
4
4
4
4
Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
Operation Start-up
Voltage1
SYMBOL
VFB1
VST1-1
(note 2)
VST2-1
MAXDTY1
Maximum Duty Ratio1
PFMDTY1
PFM Duty Ratio1
EFFI1
Efficiency1
TSS1
Soft-Start Time1
EXT1 "High" ON Resistance REXTBH1
EXT1 "Low" ON Resistance REXTBL1
VPWMH1
PWM1 "High" Voltage
VPWML1
PWM1 "Low" Voltage
Oscillation Start-up Voltage1
Step-up Controller
CONDITIONS
VDD=3.0V, VIN=1.5V, IOUT1=10mA
Using Tr: 2SD1628,
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
VDD ≠ VOUT1: IOUT1=1mA
FB1=0V
Same as I DD1
No Load, VPWM1=0V
IOUT1=100mA, Nch MOSFET:XP161A1355P
VOUT1 × 0.95V, CE1=0V→0.65V
FB1=0, EXT1=VDD-0.4V
EN1=FB2=0V, EXT1=0.4V
No Load
No Load
Ta=25OC
MAX. UNITS CIRCUIT
5
0.918
V
MIN.
0.882
TYP.
0.900
-
-
0.9
V
2
75
22
5.0
0.65
-
80
30
83
10.0
28
22
-
2.0
0.8
85
38
20.0
47
30
0.20
V
V
%
%
%
mS
Ω
Ω
V
V
1
4
4
6
6
6
7
7
6
6
MIN.
0.882
TYP.
0.900
Ta=25OC
MAX. UNITS CIRCUIT
8
0.918
V
-
-
0.9
V
3
75
22
5.0
0.65
-
80
30
83
10.0
28
22
-
2.0
0.8
85
38
20.0
47
30
0.20
V
V
%
%
%
mS
Ω
Ω
V
V
1
4
4
9
9
9
7
7
9
9
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
SYMBOL
VFB2
VST1-2
(note 3)
VST2-2
MAXDTY2
Maximum Duty Ratio2
PFMDTY2
PFM Duty Ratio2
EFFI2
Efficiency2
TSS2
Soft-Start Time2
EXT2 "High" ON Resistance REXTBH2
EXT2 "Low" ON Resistance REXTBL2
VPWMH2
PWM2 "High" Voltage
VPWML2
PWM2 "Low" Voltage
Oscillation Start-up Voltage2
Step-up Controller
CONDITIONS
VDD=3.0V, VIN=1.5V, IOUT2=10mA
Using Tr: 2SD1628,
IOUT2=1.0mA, RFB21=200kΩ,RFB22=75kΩ
VDD ≠ VOUT2 : IOUT2=1mA
FB2=0V
Same as I DD1
No Load, VPWM 2=0V
IOUT2=100mA, Nch MOSFET:XP161A1355P
VOUT2 × 0.95V, EN2=0V→0.65V
FB2=0, EXT2=VDD-0.4V
EN2=FB2=0V, EXT2=0.4V
No Load
No Load
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
6
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
Notes
Although the IC's step-up operations start from a V DD of 0.8V, the output voltage and switching frequency are stabilized
1)
at VDD ≥ 2.0V. Therefore, a V DD of more than 2.0V is recommended when V DD is supplied from V IN or oTher power
sources.
2)
Although the IC's switching operations start from a V IN of 0.9V, the IC's power supply pin (V DD) and output voltage
monitor pin (FB1) should be connected to V OUT1. With operations from V IN=0.9V, the 2nd channel's (output 2) E N2 pin
should be set to disable. Once ouput voltage V OUT1 is more than 2.0V, the EN2 pin should be set to enable.
3)
Although the IC's switching operations start from a V IN of 0.9V, the IC's power supply pin (V DD) and output voltage
monitor pin (FB2) should be connected to V OUT2. With operations from V IN=0.9V, the 1st channel's (output 1) E N1 pin
should be set to disable. Once ouput voltage V OUT2 is more than 2.0V, the EN1 pin should be set to enable.
4)
Please be careful not to exceed the breakdown voltage level of the peripheral parts.
5)
EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
! Typical Application Circuit
1 VDD connected to VOUT1
SD1
VOUT1
SD2
L2
L1
VIN
VOUT2
CIN
Tr1
Tr2
CFB2
CFB1
RFB11
1 EXT1
+
CL1
2 VDD
GND 9
3 FB1
FB2 8
4 PWM1
VPWM1
RFB12
VEN1
RFB21
EXT2 10
5 EN1
+
CL2
PWM2 7
VPWM2
EN2 6
VEN2
RFB22
2 VDD connected to VIN
SD1
VOUT1
L1
SD2
L2
VIN
VOUT2
CIN
Tr1
Tr2
CDD
CFB2
CFB1
RFB11
1 EXT1
+
CL1
VPWM1
RFB12
VEN1
RFB21
EXT2 10
2 VDD
GND 9
3 FB1
FB2 8
4 PWM1
5 EN1
7
+
CL2
PWM2 7
VPWM
VPWM2
EN2 6
VEN2
RFB22
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Operation Description
The XC9501 series are multi-functional, 2 channel step-up DC/DC converter controller ICs with built-in high speed, low ON
resistance drivers.
<Error Amp>
The Error Amplifier is designed to monitor the output voltage and it compares the feedback voltage (FB) with the reference
voltage. In response to feedback of a voltage lower than the reference voltage, the output voltage of the error amp. decreases.
<OSC Generator>
This circuit generates the Switching Frequency which in turn generates the reference clock.
<Ramp Wave Generator 1, 2>
The Ramp Wave Generator generates a saw-tooth waveform based on outputs from the Phase Shift 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 PWM/PFM 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 stand-by).
<Vref with Soft Start 1, 2>
The reference voltage, Vref (FB pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please
refer to the notes on page 8). 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 the error amps, the operation
maintains a balance between the two inputs of the error amps and controls the EXT pin's ON time so that it doesn't increase
more than is necessary.
<Enable Function>
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 pin will be kept at a low level (the external N-type MOSFET will
be OFF). When both EN1 and EN2 are in a state of disable, current consumption will be no more than 3.0 µA.
When the EN1 or EN2 pin's voltage is 0.65V or more, the mode will be enable and operations will recommence. With soft-start,
95% of the set output voltage will be reached within 10mS (TYP) from the moment of enable.
The start-up sequence for EN1 and EN2 is required when operations begin with a power supply voltage of VDD<2.0V or less.
Although IC starts oscillation from a VIN of 0.9V, the IC's power supply pin (VDD) and the output voltage monitor pin (FB1)
should be connected to VOUT1. When the IC starts operations from a VIN of 0.9V, set channel two's (output 2) EN2 pin to
disable and turn it to enable when VOUT1 is more than 2.0V. Conversely, when IC 2's power supply pin (VDD) and output
voltage monitor
pin (FB2) are connected to VOUT2, set channel one's (output 1) EN1 pin to disable and turn it to enable when VOUT2 is more
than
2.0V.
For power supply voltages of VDD<2.0V, oscillation may occur irrespective of the FB pin voltage. Should this happen, you may
find that output voltage will be higher than the set voltage. The FB pin voltage and the reference voltage Vref will be compared
and output voltage will be controlled when the power supply voltage is VDD>2.0V or more. With power supply voltages of
VDD>2.0V, the start-up sequence for EN1 and EN2 will not be required.
8
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
<Setting of Output Voltage>
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on
the values of RFB11(RFB21) and RFB12(RFB22). The sum of RFB11(RFB21) and RFB12(RFB22) should normally be 1 M Ω or
less.
VOUT=0.9 × (RFB11+RFB12) /RFB12
The value of CFB1(CFB2), speed-up capacitor for phase compensation, should be resulted fzfb = 1 / (2 π x CFB1 x RFB11)
equal to 12kMz. Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and value
of load capacity (CL).
[Example of Calculation]
When RFB11=200kΩ and RFB12=75kΩ, VOUT1=0.9 × (200K+75k) / 75k=3.3V.
[Typical Example]
VOUT
(V)
1.5
1.8
2.0
2.2
2.5
RFB11 RFB12 CFB1
(pF)
(kΩ)
(kΩ)
VOUT
(V)
RFB11 RFB12 CFB1
(pF)
(kΩ)
(kΩ)
VOUT
(V)
220
330
62
2.7
360
180
33
12.0
220
220
62
3.0
560
240
24
330
270
39
3.3
200
75
62
390
270
33
5.0
82
18
160
390
220
33
8.0
120
15
100
The same method can be adopted for channel two (output 2) also.
RFB11 RFB12 CFB1
(pF)
(kΩ)
(kΩ)
160
13
82
[External Components]
Tr :
* MOSFET
XP161A1355PR (TOREX N-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 8V so
please be careful with the power supply voltage. If
the power supply voltage is more than 6V, please
use XP161A1265PR, where VGS Breakdown
Voltage is 12V. VST1 of XP161A1355PR is 1.2V
(max.) and that of XP161A1265PR is 1.5V (max.)
SD :
L:
CL :
* NPN MOSFET
2SD1628
(SANYO)
Rb
: 500Ω
Cb
( Adjust in accordance with load & Tr.'s HFE.)
: 2200pF (Ceramic)
Set up according to the equation below.
Cb ≤1/(2 π × Rb × Fosc × 0.7)
MA2Q737
(Schottky , MATSUSHITA)
CMS02
(Schottky , TOSHIBA)
22µH
(SUMIDA, CDRH5D28, FOSC = 180kHz)
15µH
(SUMIDA, CDRH5D28, FOSC = 300kHz)
10µH
(SUMIDA, CDRH5D28, FOSC = 500kHz)
16V, 47µF
(Tantalum, NICHICHEMI MCE series)
Increase capacity according to the equation below
when the step-up voltage ratio is large and output
current is high.
CL = (CL standard value) × (IOUT (mA) / 300mA ×VOUT/VIN
9
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Test Circuit
Circuit 6
Circuit 1
SD1
VOUT1
L2
L1
SD2
L1
SD1
VOUT1
VOUT2
A
+
CIN
VIN
Nch
MOSFET1
510Ω
510Ω
A
NPN
Tr1
RFB11
1 EXT1
2200pF
CFB1
+
2 VDD
NPN
Tr2
EXT2 10
2200pF
GND 9
3 FB1
62pF
FB2 8
RL
RL2
4 PWM1
PWM2 7
75kΩ
RFB22
5 EN1
+
CIN
VIN
GND 9
3 FB1
CL1
CL2
PWM2 7
RFB12
2 VDD
+
V
+
FB2 8
RL1
4 PWM1
EXT2 10
200kΩ
RFB21
CFB2
1µF
CL1
1 EXT1
5 EN1
OSC
EN2 6
VPW M1
EN2 6
VEN1
Circuit 7
Circuit 2
SD1
VOUT1
L2
L1
+
VIN
RFB11
1 EXT1
2200pF
CFB1
VOUT2
1 EXT1
510Ω
510Ω
NPN
Tr1
SD2
CIN
2 VDD
GND 9
3 FB1
FB2 8
2200pF
RFB21
CFB2
GND 9
Rp
FB2 8
4 PWM1
CL2
PWM2 7
OSC
RL2
RL1
4 PWM1
3 FB1
Rp
+
+
CL1
EXT2 10
2 VDD
NPN
Tr2
EXT2 10
OSC
1µF
PWM2 7
VPW M1
VDD
5 EN1
VPW M2
EN2 6
VEXT2
RFB22
RFB12
5 EN1
EN2 6
VEXT1
VFB1
VFB2
VEN2
VEN1
Circuit 8
Circuit 3
SD1
VOUT1
L2
L1
Nch
MOSFET2
SD2
L2
VOUT2
VOUT2
+
VIN
CIN
A
1 EXT1
CFB1
2200pF
+
CL1
RL1
A
510Ω
510Ω
NPN
Tr1
RFB11
2 VDD
GND 9
3 FB1
FB2 8
4 PWM1
+
NPN
Tr1
EXT2 10
2200pF
1 EXT1
VIN
CIN
RFB21
CFB2
+
CL2
RL2
RFB22
5 EN1
2 VDD
GND 9
3 FB1
FB2 8
4 PWM1
PWM2 7
RFB12
EXT2 10
EN2 6
Circuit 4
+
RL
EN2 6
VDD
Circuit 9
L2
1 EXT1
A
EXT2 10
2 VDD
+
GND 9
SD2
3 FB1
A
VIN
FB2 8
4 PWM1
A
A
A
PWM2 7
5 EN1
EN2 6
A
A
VOUT2
Nch
MOSFET2
1 EXT1
A
EXT2 10
200kΩ
CIN
OSC
V
CL2
PWM2 7
5 EN1
1µF
SD2
2 VDD
GND 9
3 FB1
FB2 8
62pF
OSC
+
RL
4 PWM1
PWM2 7
75kΩ
1µF
5 EN1
VDD
VFB1
VPW M1
VEN1
VEN2
VPW M2
VFB2
L1
Nch
MOSFET1
1 EXT1
SD1
CL1
+
+
2 VDD
CIN
V
3 FB1
EXT2 10
VIN
GND 9
FB2 8
RL
4 PWM1
5 EN1
VDD
EN2 6
VEN2
Circuit 5
VOUT1
V
CL2
OSC
A
PWM2 7
EN2 6
1µF
10
VPW M2
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Peripheral Components Used for Test Circuits
Circuit 1, Circuit 2, Circuit 3
L1, L2 :
22µH (SUMIDA CDRH5D28) : XC9501B092A
15µH (SUMIDA CDRH5D28) : XC9501B093A
10µH (SUMIDA CDRH5D28) : XC9501B095A
SD1, SD2 :
CRS02 (Schottky diode, TOSHIBA)
EC10QS06 (Schottky diode, NIHON INTER)
CL1, CL2 :
16MCE476MD2 (Tantalum, NIHON CHEMICON)
35MCE335MB2 (Tantalum, NIHON CHEMICON)
CIN :
16MCE476MD2 (Tantalum, NIHON CHEMICON)
NPN Tr1, 2:
2SA1628 (SANYO)
CPH3215 (SANYO)
CPH3210 (SANYO)
RFB :
Please use by the conditions as below.
RFB11 + RFB12 ≤ 1MΩ
RFB21 + RFB22 ≤ 1MΩ
RFB11 / RFB12 = (Setting Output Voltage / 0.9) -1
RFB21 / RFB22 = (Setting Output Voltage / 0.9) -1
CFB :
Please adjust as below:
fzfb=1/(2 x π x CFB1 x RFB11) = 1kHz ~50kHz ( 12kHz usual)
fzfb=1/(2 x π x CFB2 x RFB21) = 1kHz ~50kHz ( 12kHz usual)
Circuit 6 and Circuit 9
L1, L2 :
22µH (SUMIDA CDRH5D28) : XC9501B092A
15µH (SUMIDA CDRH5D28) : XC9501B093A
10µH (SUMIDA CDRH5D28) : XC9501B095A
SD1, SD2:
MA2Q737 (Schottky diode, MATSUSHITA)
CL1, CL2 :
16MCE476MD2 (Tantalum, NIHON CHEMICON)
CIN :
16MCE476MD2 (Tantalum, NIHON CHEMICON)
N-ch MOSFET1 :
XP161A1355P (TOREX)
Circuit 5 and Circuit 8
L1, L2 :
SD1, SD2 :
CL1, CL2 :
CIN :
N-ch MOSFET1 :
22µH (SUMIDA CDRH5D28)
MA2Q737 (Schottky, MATSUSHITA)
16MCE476MD2 (Tantalum, NIHON CHEMICON)
16MCE476MD2 (Tantalum, NIHON CHEMICON)
XP161A1355P (TOREX)
11
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Notes on Use
1. PWM/PFM Automatic Switching
If PWM/PFM automatic switching control is selected and the step-up ratio is low (e.g., from 4.5 V to 5.0 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 XC9501 series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with
the XC9501 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 XC9501 series and peripheral components within the limits of their ratings.
12
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
Typical Performance Characteristics
(1) Output Voltage vs. Output Current
FOSC=180kHz, VOUT1, 2= 2.5V
FOSC=180kHz, VOUT1, 2= 1.5V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.7
PWM/PFM Switching Control
PWM Control
Output Voltage1, 2 VOUT1 , 2(V)
Output Voltage1, 2 VOUT1, 2 (V)
1.7
1.6
1.5
VIN=0.9V
1.4
1.2V
1.3
PWM/PFM Switching Control
PWM Control
1.5V
2.6
2.5
VIN=0.9V
0.1
2.3
1
10
100
0.1
1000
1
10
100
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
FOSC=180kHz, VOUT1, 2= 5.0V
5.2
Output Voltage1, 2 VOUT1, 2 (V)
PWM/PFM Switching Control
PWM Control
2.7V
3.4
3.3
VIN=0.9V
3.2
1000
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
3.5
1.2V,1.5V
3.1
4.2V
PWM/PFM Switching Control
PWM Control
5.1
5.0
VIN=1.5V
4.9
2.7V
3.3V
4.8
4.7
3.0
0.1
1
10
100
0.1
1000
1
10
FOSC=180kHz, VOUT1, 2= 8.0V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1265P
8.2
5.0V
PWM/PFM Switching Control
PWM Control
8.1
8.0
VIN=3.3V
4.2V
7.9
7.8
7.7
0.1
1
10
100
100
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
Output Voltage1, 2 VOUT1, 2 (V)
1.2V
2.4
2.2
1.2
Output Voltage1, 2 VOUT1, 2 (V)
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
1000
Output Current 1, 2 I OUT1, 2 (mA)
Dotted Arrowhead
13
PWM/PFM Switching Control
1000
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
(1) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1, 2= 2.5V
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
1.5V
2.6
2.5
2.4
VIN=0.9V
1.2V
2.3
2.2
PWM/PFM Switching Control
PWM Control
2.7V
3.4
3.3
VIN=0.9V
3.2
1.2V
1
10
100
1000
0.1
10
100
1000
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
FOSC=500kHz, VOUT1, 2= 2.5V
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
Output Voltage1, 2 VOUT1, 2 (V)
3.3V
5.1
4.2V
5.0
4.9
VIN=1.2V
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.7
PWM/PFM Switching Control
PWM Control
2.7V
1.5V
4.8
4.7
PWM/PFM Switching Control
PWM Control
1.5V
2.6
2.5
VIN=0.9V
2.4
1.2V
2.3
2.2
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
FOSC=500kHz, VOUT1, 2= 5.0V
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control
PWM Control
2.7V
3.4
1.5V
3.3
3.2
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
5.2
Output Voltage1, 2 VOUT1, 2 (V)
Output Voltage1, 2 VOUT1, 2 (V)
1
Output Current 1, 2 I OUT1, 2 (mA)
5.2
3.5
1.5V
3.1
3.0
0.1
Output Voltage1, 2 VOUT1, 2 (V)
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
3.5
PWM/PFM Switching Control
PWM Control
Output Voltage1, 2 VOUT1, 2 (V)
Output Voltage1, 2 VOUT1, 2 (V)
2.7
FOSC=300kHz, VOUT1, 2= 3.3V
VIN=0.9V
1.2V
3.1
3.0
4.2V
PWM/PFM Switching Control
PWM Control
5.1
3.3V
5.0
4.9
VIN=0.9V
1.2V
4.8
2.7V
1.5V
4.7
0.1
1
10
100
1000
0.1
Output Current 1, 2 I OUT1, 2 (mA)
1
10
100
Output Current 1, 2 I OUT1, 2 (mA)
Dotted Arrowhead
14
PWM/PFM Switching Control
1000
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
(2) Efficiency vs. Output Current
FOSC=180kHz, VOUT1, 2= 1.5V
L=22µH(CDRH5D28), C L=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
80
60
VIN=0.9V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
Efficiency1, 2 EFFI 1, 2 (%)
100
Efficiency1, 2 EFFI 1, 2 (%)
FOSC=180kHz, VOUT1, 2= 2.5V
1.2V
40
20
80
60
VIN=0.9V 1.2V
40
20
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
0
0
0.1
10
100
1000
0.1
1
10
100
1000
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
FOSC=180kHz, VOUT1, 2= 5.0V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.7V
80
VIN=0.9V 1.2V 1.5V
60
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
1
Output Current 1, 2 I OUT1, 2 (mA)
100
40
20
80
4.2V
3.3V
60
2.7V
VIN=1.5V
40
20
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
0
0
0.1
1
10
100
0.1
1000
1
10
FOSC=180kHz, VOUT1, 2= 8.0V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1265P
100
80
VIN=3.3V
4.2V
60
5.0V
40
20
PWM/PFM Switching Control
PWM Control
0
0.1
1
10
100
100
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
Efficiency1, 2 EFFI 1, 2 (%)
1.5V
1000
Output Current 1, 2 I OUT1, 2 (mA)
Dotted Arrowhead
15
PWM/PFM Switching Control
1000
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
(2) Efficiency vs. Output Current (Continued)
FOSC=300kHz, VOUT1, 2= 2.5V
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
80
1.5V
60
VIN=0.9V
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
Efficiency1, 2 EFFI 1, 2 (%)
100
Efficiency1, 2 EFFI 1, 2 (%)
FOSC=300kHz, VOUT1, 2= 3.3V
1.2V
40
20
2.7V
80
1.2V
VIN=0.9V 1.5V
60
40
20
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
0
0
0.1
10
100
1000
0.1
100
1000
FOSC=300kHz, VOUT1, 2= 5.0V
FOSC=500kHz, VOUT1, 2= 2.5V
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
Efficiency1, 2 EFFI 1, 2 (%)
PWM/PFM Switching Control
PWM Control
4.2V
60
3.3V
2.7V
VIN=1.2V
1.5V
40
20
PWM/PFM Switching Control
PWM Control
80
1.5V
60
1.2V
VIN=0.9V
40
20
0
0
0.1
1
10
100
0.1
1000
1
10
100
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
FOSC=500kHz, VOUT1, 2= 5.0V
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
80
2.7V
60
VIN=0.9
1.2V
40
1.5V
20
1000
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
10
Output Current 1, 2 I OUT1, 2 (mA)
80
100
1
Output Current 1, 2 I OUT1, 2 (mA)
100
Efficiency1, 2 EFFI 1, 2 (%)
1
4.2V
80
3.3V
60
1.2V
40
2.7V
VIN=0.9V 1.5V
20
PWM/PFM Switching Control
PWM Control
0
0
0.1
1
10
100
1000
0.1
Output Current 1, 2 I OUT1, 2 (mA)
1
10
100
Output Current 1, 2 I OUT1, 2 (mA)
Dotted Arrowhead
16
PWM/PFM Switching Control
1000
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
(3) Ripple Voltage vs. Output Current
FOSC=180kHz, VOUT1, 2= 1.5V
FOSC=180kHz, VOUT1, 2= 2.5V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
100
PWM/PFM Switching Control
PWM Control
80
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
PWM/PFM Switching Control
PWM Control
60
1.2V
VIN=0.9V
40
20
0
80
VIN=0.9V
1.2V
1.5V
60
40
20
0
0.1
1
10
100
1000
0.1
10
100
1000
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
FOSC=180kHz, VOUT1, 2= 5.0V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
100
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
80
60
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
1
Output Current 1, 2 I OUT1, 2 (mA)
1.5V
VIN=0.9V
40
2.7V
20
4.2V
80
2.7V
60
VIN=1.5V
40
20
3.3V
1.2V
0
0
0.1
1
10
100
0.1
1000
1
10
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 8.0V
L=22µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1265P
100
Ripple Voltage1, 2 (mV)
PWM/PFM Switching Control
PWM Control
80
4.2V
60
5.0V
VIN=3.3V
40
20
0
0.1
1
10
100
100
1000
Output Current 1, 2 I OUT1, 2 (mA)
Dotted Arrowhead
17
PWM/PFM Switching Control
1000
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
(3) Ripple Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1, 2= 2.5V
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
80
1.5V
1.2V
60
VIN=0.9V
40
20
0
1
1.2V
60
VIN=0.9V
40
2.7V
20
10
100
1000
0.1
1
10
100
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
FOSC=500kHz, VOUT1, 2= 2.5V
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control
PWM Control
80
4.2V
3.3V
PWM/PFM Switching Control
PWM Control
2.7V
1.5V
60
VIN=1.2V
40
20
0
1000
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
Ripple Voltage1, 2 (mV)
100
1.5V
80
1.2V
60
VIN=0.9V
40
20
0
0.1
1
10
100
1000
0.1
1
10
100
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
FOSC=500kHz, VOUT1, 2= 5.0V
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
1.2V
2.7V
Ripple Voltage1, 2 (mV)
80
60
VIN=0.9V
40
20
1.5V
1000
L=10µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
Ripple Voltage1, 2 (mV)
1.5V
80
0
0.1
Ripple Voltage1, 2 (mV)
L=15µH(CDRH5D28), CL=94µF(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
FOSC=300kHz, VOUT1, 2= 3.3V
2.7V
80
1.5V
1.2V
60
Vin=0.9V
40
4.2V
20
3.3V
0
0
0.1
1
10
100
0.1
1000
1
10
100
Output Current 1, 2 I OUT1, 2 (mA)
Output Current 1, 2 I OUT1, 2 (mA)
Dotted Arrowhead
18
PWM/PFM Switching Control
1000
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Typical Performance Characteristics (Continued)
(4) Supply Current vs. Supply Voltage
(5) Supply Current 1-1 vs. Supply Voltage
XC9501B092 (180kHz)
XC9501B092 (180kHz)
Supply Current 1-1 IDD1-1 (µA)
Supply Current 1 IDD1 (µA)
500
Topr=85o C
25o C
- 40o C
400
300
200
100
0
0
2
4
6
8
400
Topr=85o C
25o C
- 40o C
300
200
100
0
10
0
Supply Voltage VDD (V)
(6) Supply Current 1-2 vs. Supply Voltage
6
8
10
XC9501B092 (180kHz)
400
400
Supply Current 2 IDD2 (µA)
Supply Current1-2 IDD1-2 (µA)
4
(7) Supply Current 2 vs. Supply Voltage
XC9501B092 (180kHz)
Topr=85o C
25o C
- 40o C
300
200
100
0
Topr=85o C
25o C
- 40o C
300
200
100
0
0
2
4
6
8
10
0
Supply Voltage VDD (V)
Oscillation Frequency Fosc (kHz)
8
6
o
Topr=85 C
25o C
- 40o C
2
0
2
4
6
8
6
8
10
XC9501B092 (180kHz)
10
0
4
(9) Oscillation Frequency vs. Supply Voltage
XC9501B092 (180kHz)
4
2
Supply Voltage VDD (V)
(8) Stand-by Current vs. Supply Voltage
Stand-by Current ISTB (µA)
2
Supply Voltage VDD (V)
210
200
190
Topr=25o C
180
170
85o C
160
- 40o C
150
0
10
2
4
6
8
Supply Voltage VDD (V)
Supply Voltage VDD (V)
19
10
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
(10) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage
(11) EN1, 2 'H' 'L' Voltage vs. Supply Voltage
XC9501B092 (180kHz)
0.8
0.6
EN1, 2 'H' ' L' Voltage VEN1, 2
(V)
PWM1, 2 'H' ' L' Voltage Vpwm1,
2 (V)
XC9501B092 (180kHz)
- 40oC
0.4
85o C
0.2
Topr=25o C
0
0
2
4
6
8
0.8
0.6
- 40oC
0.4
0.2
0
0
10
2
(12) Maximum Duty Ratio1, 2 vs. Supply Voltage
Softstart Time1, 2 TSS (msec)
Max Duty Ratio 1, 2 Maxdty1, 2
(%)
o
Topr=85 C
25o C
- 40o C
75
70
65
2
4
6
8
20
15
10
5
0
0
10
EXT1, 2 L ON Resistance (Ω)
EXT1, 2 H ON Resistance (Ω)
Topr=85o C
25o C
- 40o C
20
10
0
4
6
8
6
8
10
XC9501B092 (180kHz)
50
2
4
(15) EXT1, 2 Low ON Resistance vs. Supply Voltage
XC9501B092 (180kHz)
0
2
Supply Voltage VDD (V)
(14) EXT1, 2 High ON Resistance vs. Supply Voltage
30
10
25
Supply Voltage VDD (V)
40
8
XC9501B092 (180kHz)
90
0
6
(13) Softstart Time1, 3 vs. Supply Voltage
XC9501B092 (180kHz)
80
4
Supply Voltage VDD (V)
Supply Voltage VDD (V)
85
85o C
Topr=25o C
10
50
Topr=85o C
25o C
- 40o C
40
30
20
10
0
0
Supply Voltage VDD (V)
2
4
6
8
Supply Voltage VDD (V)
20
10
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
(16) Operation Start-Up Voltage vs. Ambient Temperature
(17) Operation Retention Voltage vs. Ambient Temperature
XC9501B092(180kHz,VOUT=3.3V)
L=22µH(CDRH5D28), CL=47µF(Tantalum)
SD:MA2Q737, Tr:2SD1628G
1.2
Operation Retention Voltage
VHLD (V)
Operation Start-Up Voltage
VST1 (V)
XC9501B092 (180kHz,VOUT=3.3V)
1
0.8
0.6
0.4
0.2
IOUT=1mA
0
-40 -20
0
20
40
60
L=22µH(CDRH5D28), CL=47µF(Tantalum)
SD:MA2Q737, Tr:2SD1628G
0.8
0.6
0.4
0.2
IOUT=1mA
0
80 100
-40 -20
Ambient Temperature Ta ( o C)
(18) Oscillation Start-Up Voltage vs. Ambient Temperature
40
60
80 100
XC9501B092 (180kHz)
40
1
PFM Duty Ratio 1, 2 (%)
Oscillation Start-Up Voltage
VST2 (V)
20
(19) PFM Duty Ratio 1, 2 vs. Supply Voltage
XC9501B092(180kHz,VOUT=2.0V)
0.8
0.6
0.4
0.2
Topr=85o C
25o C
- 40o C
35
30
25
20
0
-40 -20
0
20
40
60
0
80 100
(20) Output Voltage vs. Ambient Temperature
XC9501B093(300kHz)
L=22µH(CDRH5D28), CL=94µF(Tantalum)
Tr:XP161A1265P, SD:CMS02
3.5
3.4
3.3
3.2
3.1
VIN=1.8V
IOUT=200mA
3.0
-50
-20
10
40
70
2
4
6
8
Supply Voltage VDD (V)
Ambient Temperature Ta ( o C)
Output Voltage VOUT (V)
0
Ambient Temperature Ta ( o C)
100
Ambient Temperature Ta ( 0 C)
21
10
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! Load Transient Response
< VOUT1 = 3.3V, VIN = 2.0V
IOUT1, 2 =100µA ! 100mA >
" PWM Control
FOSC=180kHz, VOUT1, 2=3.3V
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA→ 100µA
VIN=2.0V, IOUT1, 2=100µA→ 100mA
CH1
3.3V
CH1
3.3V
100mA
CH2
100µA
100mA
CH2
100µA
10msec/div
CH1:VOUT1, 2 , AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
200µsec/div
CH1:VOUT1 , 2, AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
" PWM/PFM Switching Control
FOSC=180kHz, VOUT1, 2=3.3V
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA→ 100µA
VIN=2.0V, IOUT1, 2=100µA→ 100mA
3.3V
3.3V
CH1
CH1
100mA
100mA
CH2
100µA
CH2
100µA
10msec/div
CH1:VOUT1, 2 , AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
200µsec/div
CH1:VOUT1, 2 , AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
22
XC9501 Series
< VOUT1 = 3.3V, VIN = 2.0V
2ch. Step-up DC/DC Controller ICs.
IOUT1, 2 =10mA ! 100mA >
" PWM Control
FOSC=180kHz, VOUT1, 2=3.3V
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=10mA→ 100mA
VIN=2.0V, IOUT1, 2=100mA→ 10mA
CH1
3.3V
CH1
3.3V
100mA
CH2
10mA
100mA
CH2
200µsec/div
CH1:VOUT1 , 2, AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
10mA
200µsec/div
CH1:VOUT1, 2 , AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
" PWM/PFM Switching Control
FOSC=180kHz, VOUT1, 2=3.3V
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=10mA→100mA
VIN=2.0V, IOUT1, 2=100mA→ 10mA
3.3V
CH1
CH1
3.3V
100mA
CH2
10mA
100mA
CH2
200µsec/div
CH1:VOUT1, 2 , AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
10mA
200µsec/div
CH1:VOUT1, 2 , AC-COUPLED, 50mV/div
CH2:IOUT1, 2 , 50mA/div
23
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
< PWM Controlled ! PWM / PFM Switching Controlled >
FOSC=180kH, VOUT1, 2=3.3V
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=1mA PWM1, 2, ’L’→’H’
VIN=2.0V, IOUT1, 2=1mA PWM1, 2, ’H’→’L’
CH1
3.3V
CH1
3.3V
0.65V
0V
CH2
0.65V
CH2
0V
1msec/div
CH1:VOUT1, 2 , AC-COUPLED ,10mV/div
CH2:PWM 1, 2 , 0.5V/div
1msec/div
CH1:VOUT1, 2 , AC-COUPLED ,10mV/div
CH2:PWM 1, 2 , 0.5V/div
" Soft Start Wave Form
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA
EN1, 2 ’L’→’H’ CIN=47µF
3.3V
300mA
CH1
CH2
0.65V
CH3
4ms/div
CH1:VOUT1, 2 , 1.0V/div
CH2:IIN1, 2 , 100mA/div
CH3:EN1, 2 , 0.5V/div
* CH1:
CH2:
24
EN2=GND when measurement
EN1=GND when measurement