XC9501 Series
ETR0701_002
2ch.Step-Up/Up DC/DC Controller ICs
☆GO-Compatible
■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. 100kHz, 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.
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.
■APPLICATIONS
■FEATURES
●PDAs
2ch DC/DC Controller
Input Voltage Range
Supply Voltage Range
Output Voltage Range
Output Current
●Palm top computers
●Portable audio systems
●Various multi-function power supplies
■TYPICAL APPLICATION CIRCUIT
( XC9501B092A Input: 2 cells, Output ①: 3.3V, Output ②: 5.0V )
: (Step-Up + Step-Up)
: 0.9V ~ 10V
: 2.0V ~ 10V
: 1.5V ~ 30V (set by FB1/FB2 pins)
: More than 200mA
(VIN=1.8V, VOUT=3.3V)
Switching Frequency : 180kHz (±15%)
100kHz, 300kHz & 500kHz
as custom
Maximum Duty Cycle : 80% (TYP.)
Control Method
: PWM or PWM/PFM Selectable
High Efficincy
: 83% (TYP.)
Stand-by Current
: 3.0μA (MAX.)
Soft-start
: internally set-up
Package
: MSOP-10, USP-10
■TYPICAL PERFORMANCE
CHARACTERISTICS
●Efficiency vs. Output Current
1/27
XC9501 Series
■PIN CONFIGURATION
USP-10
(BOTTOM VIEW)
■PIN ASSIGNMENT
PIN NUMBER PIN NAME
FUNCTION
1
EXT 1
Channel 1: External Transistor Drive Pin
<Connected to N-ch Power MOSFET Gate>
2
VDD
3
FB1
4
PWM1
5
EN1
6
EN2
7
PWM2
8
FB2
9
GND
Ground
10
EXT2
Channel2: External Transistor Drive Pin
<Connected to N-ch Power MOSFET Gate>
Supply Voltage
Channel 1: Output Voltage Monitor Feedback Pin
<Threshold value: 0.9V. Output Voltage can be set freely by connecting split resistor
between VOUT1 and GND.>
Channel 1: PWM/PFM Switching Pin
<Control Output 1. PMW control when connected to VDD, PWM/PFM auto Switching when
connected to GND.>
Channel 1: Enable Pin
<Connected to GND when Output 1 is in stand-by mode. Connected to VDD when Output 1
is active. EXT1 is low when in stand-by mode.>
Channel 2: Enable Pin
<Connected to GND when Output 2 is in stand-by mode. Connected to VDD when Output 2
is active. EXT2 is high when in stand-by mode.>
Channel 2: PWM/PFM Switching Pin
<Control Output 2. PMW control when connected to VDD, PWM/PFM auto Switching when
connected to GND.>
Channel 2: Output Voltage Monitor Feedback Pin
<Threshold value: 0.9V. Output Voltage can be set freely by connecting split resistor
between VOUT2 and GND.>
■PRODUCT CLASSIFICATION
●Ordering Information
XC9501 ①②③④⑤
DESIGNATOR
①
②
2/27
DESCRIPTION
Type of DC/DC Controller
Output Voltage
③
Oscillation Frequency
④
Package
⑤
Device Orientation
SYMBOL
B
09
DESCRIPTION
: Standard (10 Pin)
: FB Voltage: 0.9V
1
2
3
5
A
D
R
L
: 100kHz (custom)
: 180kHz
: 300kHz (custom)
: 500kHz (custom)
: MSOP-10
: USP-10
: Embossed tape, standard feed
: Embossed tape, reverse feed
XC9501
Series
■BLOCK DIAGRAM
■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
MSOP-10
Power Dissipation
USP-10
Operating Temperature Range
Storage Temperature Range
SYMBOL
VDD
VFB
VEN
VPWM
VEXT
IEXT
Pd
Topr
Tstg
RATINGS
- 0.3 ~ 12.0
- 0.3 ~ 12.0
- 0.3 ~ 12.0
- 0.3 ~ 12.0
- 0.3 ~ VDD + 0.3
±100
150
150
- 40 ~ + 85
- 55 ~ + 125
Ta=25℃
UNITS
V
V
V
V
V
mA
mW
℃
℃
3/27
XC9501 Series
■ELECTRICAL CHARACTERISTICS
XC9501B091A Common Characteristics
PARAMETER
Supply Voltage (* 1)
SYMBOL
VDD
CONDITIONS
VDD≧2.0V IOUT1,2=1mA
VIN ≧0.9V IOUT1,2=1mA
Output Voltage Range (* 4)
(* 2)
VIN≧0.9V IOUT1,2=1mA (* 3)
Supply Current 1
FB1, 2=0V
EN1=3.0V, EN2=0V, FB1=0V
Supply Current 1-1
IDD1-1
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
Supply Current 1-2
IDD1-2
FB1=1V, FB2=0V
Supply Current 2
IDD2
FB1, 2=1.0V
Stand-by Current
ISTB
Same as IDD1, EN1=EN2=0V
Oscillation Frequency
FOSC
Same as IDD1
EN1, 2 "High" Voltage
VENH
FB1, 2=0V
EN1, 2 "Low" Voltage
VENL
FB1, 2=0V
EN1, 2 "High" Current
IENH
FB1, 2=3.0V
EN1, 2 "Low" Current
IENL
EN1, 2=0V, FB1, 2=3.0V
PWM1, 2 "High" Current
IPWMH
FB1, 2=3.0V, PWM=3.0V
PWM1, 2 "Low" Current
IPWML
FB1, 2=3.0V, PWM=0V
FB1, 2 "High" Current
IFBH
FB1, 2=3.0V
FB1, 2 "Low" Current
VFBL
FB1, 2=1.0V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
IDD1
Step-Up Controller
VOUT1, VOUT2
VOUT1
VOUT2
VOUT1
VOUT2
(FOSC = 100kHz)
Ta=25℃
MIN.
2.0
0.9
2.0
0.9
0.9
2.0
-
TYP.
70
CIRCUIT
①
-
50
80
μA
④
-
80
150
μA
④
85
0.65
-
60
100
-
90
3.0
115
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
100
μA
(FOSC = 100kHz)
CONDITIONS
MIN.
TYP. MAX. UNITS
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
V
Using Tr: 2SD1628,
0.9
V
Operation Start-up
VST1-1
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
Voltage 1(* 2)
2.0
V
VDD ≠VOUT1: IOUT1=1mA
Oscillation Start Voltage 1
VST2-1
FB1=0V
0.8
V
Maximum Duty Ratio 1
MAXDTY1 Same as IDD1
75
80
88
%
PFM Duty Ratio 1
PFMDTY1 No Load, VPWM1=0V
22
30
38
%
Efficiency 1
EFFI1
IOUT1=100mA N-ch MOSFET: XP161A1355P
83
%
Soft-Start Time 1
TSS1
VOUT1×0.95V, EN1=0V→0.65V
5.0
10.0
20.0
ms
EXT1 "High" ON Resistance
REXTBH1
FB1=0, EXT1=VDD-0.4V
28
47
Ω
EXT1 "Low" ON Resistance
REXTBL1
EN1=FB2=0V, EXT1=0.4V
22
30
Ω
PWM1 "High" Voltage
VPWMH1
No Load
0.65
V
PWM1 "Low" Voltage
VPWML1
No Load
0.20
V
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
PARAMETER
FB2 Voltage
SYMBOL
VFB1
Step-Up Controller
(FOSC = 100kHz)
CONDITIONS
MIN.
TYP. MAX. UNITS
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
V
Using Tr: 2SD1628,
0.9
V
Operation Start-up
VST1-2
IOUT1=1.0mA, RFB21=200kΩ,RFB22=75kΩ
Voltage2 (* 3)
2.0
V
VDD≠VOUT2 : IOUT2=1mA
Oscillation Start Voltage 2
VST2-2
FB2=0V
0.8
V
Maximum Duty Ratio 2
MAXDTY2 Same as IDD1
75
80
85
%
PFM Duty Ratio 2
PFMDTY2 No Load, VPWM2=0V
22
25
38
%
Efficiency 2
EFFI2
IOUT2=100mA, N-ch MOSFET: XP161A1355P
83
%
Soft-Start Time 2
TSS2
VOUT1 × 0.95V, EN2=0V→0.65V
5.0
10.0
20.0
ms
EXT2 "High" ON Resistance
REXTBH2
FB2=0, EXT2=VDD-0.4V
28
47
Ω
EXT2 "Low" ON Resistance
REXTBL2
EN2=FB2=0V, EXT2=0.4V
22
30
Ω
PWM2 "High" Voltage
VPWMH2
No Load
0.65
V
PWM2 "Low" Voltage
VPWML2
No Load
0.20
V
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
4/27
SYMBOL
VFB2
②
③
④
Ta=25℃
CIRCUIT
⑤
②
①
④
④
⑥
⑥
⑥
⑦
⑦
⑥
⑥
Ta=25℃
CIRCUIT
⑧
③
①
④
④
⑨
⑨
⑨
⑦
⑦
⑨
⑨
XC9501
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9501B092A Common Characteristics
PARAMETER
Supply Voltage (* 1)
SYMBOL
VDD
CONDITIONS
VDD≧2.0V IOUT1,2=1mA
VIN ≧0.9V IOUT1,2=1mA
Output Voltage Range (* 4)
(* 2)
VIN≧0.9V IOUT1,2=1mA (* 3)
Supply Current 1
FB1, 2=0V
EN1=3.0V, EN2=0V, FB1=0V
Supply Current 1-1
IDD1-1
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
Supply Current 1-2
IDD1-2
FB1=1V, FB2=0V
Supply Current 2
IDD2
FB1, 2=1.0V
Stand-by Current
ISTB
Same as IDD1, EN1=EN2=0V
Oscillation Frequency
FOSC
Same as IDD1
EN1, 2 "High" Voltage
VENH
FB1, 2=0V
EN1, 2 "Low" Voltage
VENL
FB1, 2=0V
EN1, 2 "High" Current
IENH
FB1, 2=3.0V
EN1, 2 "Low" Current
IENL
EN1, 2=0V, FB1, 2=3.0V
PWM1, 2 "High" Current
IPWMH
FB1, 2=3.0V, PWM=3.0V
PWM1, 2 "Low" Current
IPWML
FB1, 2=3.0V, PWM=0V
FB1, 2 "High" Current
IFBH
FB1, 2=3.0V
FB1, 2 "Low" Current
VFBL
FB1, 2=1.0V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
IDD1
Step-Up Controller
VOUT1, VOUT2
VOUT1
VOUT2
VOUT1
VOUT2
(FOSC = 180kHz)
Ta=25℃
MIN.
2.0
0.9
2.0
0.9
0.9
2.0
-
TYP.
90
CIRCUIT
①
-
60
120
μA
④
-
80
150
μA
④
153
0.65
-
70
180
-
132
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
(FOSC = 180kHz)
CONDITIONS
MIN.
TYP. MAX. UNITS
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
V
Using Tr: 2SD1628,
0.9
V
Operation Start-up
VST1-1
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
Voltage 1(* 2)
2.0
V
VDD ≠VOUT1: IOUT1=1mA
Oscillation Start Voltage 1
VST2-1
FB1=0V
0.8
V
Maximum Duty Ratio 1
MAXDTY1 Same as IDD1
75
80
88
%
PFM Duty Ratio 1
PFMDTY1 No Load, VPWM1=0V
22
30
38
%
Efficiency 1
EFFI1
IOUT1=100mA N-ch MOSFET: XP161A1355P
83
%
Soft-Start Time 1
TSS1
VOUT1×0.95V, EN1=0V→0.65V
5.0
10.0
20.0
ms
EXT1 "High" ON Resistance
REXTBH1
FB1=0, EXT1=VDD-0.4V
28
47
Ω
EXT1 "Low" ON Resistance
REXTBL1
EN1=FB2=0V, EXT1=0.4V
22
30
Ω
PWM1 "High" Voltage
VPWMH1
No Load
0.65
V
PWM1 "Low" Voltage
VPWML1
No Load
0.20
V
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
PARAMETER
FB2 Voltage
SYMBOL
VFB1
Step-Up Controller
SYMBOL
VFB2
(FOSC = 180kHz)
CONDITIONS
MIN.
TYP. MAX. UNITS
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
V
Using Tr: 2SD1628,
0.9
V
Operation Start-up
VST1-2
IOUT1=1.0mA, RFB21=200kΩ,RFB22=75kΩ
Voltage2 (* 3)
2.0
V
VDD≠VOUT2 : IOUT2=1mA
Oscillation Start Voltage 2
VST2-2
FB2=0V
0.8
V
Maximum Duty Ratio 2
MAXDTY2 Same as IDD1
75
80
85
%
PFM Duty Ratio 2
PFMDTY2 No Load, VPWM2=0V
22
25
38
%
Efficiency 2
EFFI2
IOUT2=100mA, N-ch MOSFET: XP161A1355P
83
%
Soft-Start Time 2
TSS2
VOUT1 × 0.95V, EN2=0V→0.65V
5.0
10.0
20.0
ms
EXT2 "High" ON Resistance
REXTBH2
FB2=0, EXT2=VDD-0.4V
28
47
Ω
EXT2 "Low" ON Resistance
REXTBL2
EN2=FB2=0V, EXT2=0.4V
22
30
Ω
PWM2 "High" Voltage
VPWMH2
No Load
0.65
V
PWM2 "Low" Voltage
VPWML2
No Load
0.20
V
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
②
③
④
Ta=25℃
CIRCUIT
⑤
②
①
④
④
⑥
⑥
⑥
⑦
⑦
⑥
⑥
Ta=25℃
CIRCUIT
⑧
③
①
④
④
⑨
⑨
⑨
⑦
⑦
⑨
⑨
5/27
XC9501 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9501B093A
Common Characteristics
PARAMETER
Supply Voltage (* 1)
SYMBOL
VDD
CONDITIONS
VDD≧2.0V, IOUT1, 2 =1mA
Output Voltage Range (* 4)
VOUTSET
VIN≧0.9V, IOUT1, 2=1mA (* 2)
VIN≧0.9V, IOUT1, 2=1mA (* 3)
Supply Current 1
FB1, 2=0V
EN1=3.0V, EN2=0V, FB1=0V
Supply Current 1-1
IDD1-1
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
Supply Current 1-2
IDD1-2
FB1=1.0V, FB2=0V
Supply Current 2
IDD2
FB1, 2=1.0V
Stand-by Current
ISTB
Same as IDD1, EN1=EN2=0V
Oscillation Frequency
FOSC
Same as IDD1
EN1, 2 "High" Voltage
VENH
FB1, 2=0V
EN1, 2 "Low" Voltage
VENL
FB1, 2=0V
EN1, 2 "High" Current
IENH
FB1, 2=3.0V
EN1, 2 "Low" Current
IENL
EN1, 2=0V, FB1, 2=3.0V
PWM1, 2 "High" Current
IPWMH
FB1, 2=3.0V, PWM=3.0V
PWM1, 2 "Low" Current
IPWML
FB1, 2=3.0V,PWM=0V
FB1, 2 "High" Current
IFBH
FB1, 2=3.0V
FB1, 2 "Low" Current
VFBL
FB1, 2=1V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
IDD1
VOUT1, VOUT2
VOUT1
VOUT2
VOUT1
VOUT2
Step-Up Controller
(FOSC = 300kHz)
Ta=25℃
MIN.
2.0
0.9
2.0
0.9
0.9
2.0
-
TYP.
110
CIRCUIT
-
80
150
μA
④
-
90
200
μA
④
255
0.65
-
80
300
-
160
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
MAX. UNITS
10.0
V
V
10.0
V
V
V
10.0
V
250
μA
(FOSC = 300kHz)
PARAMETER
FB2 Voltage
SYMBOL
VFB1
Step-Up Controller
(FOSC = 300kHz)
CONDITIONS
MIN.
TYP.
VDD=3.0V, VIN=1.5V, IOUT2=10mA
0.882 0.900
Using Tr: 2SD1628,
Operation Start Voltage 2 (* 3)
VST1-2
IOUT2=1.0mA, RFB21=200kΩ,RFB22=75kΩ
VDD ≠VOUT2 : IOUT2=1mA
Oscillation Start-up Voltage2
VST2-2
FB2=0V
Maximum Duty Ratio 2
MAXDTY2 Same as IDD1
75
80
PFM Duty Ratio 2
PFMDTY2 No Load, VPWM2=0V
22
30
Efficiency 2
EFFI2
IOUT2=100mA, N-ch MOSFET: XP161A1355P
83
Soft-Start Time 2
TSS2
VOUT2×0.95V, EN2=0V→0.65V
5.0
10.0
EXT2 "High" ON Resistance
REXTBH2
FB2=0, EXT2=VDD-0.4V
28
EXT2 "Low" ON Resistance
REXTBL2
EN2=FB2=0V, EXT2=0.4V
22
PWM2 "High" Voltage
VPWMH2
No Load
0.65
PWM2 "Low" Voltage
VPWML2
No Load
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
6/27
SYMBOL
VFB2
②
③
④
Ta=25℃
CONDITIONS
MIN.
TYP. MAX. UNITS
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900 0.918
V
Using Tr: 2SD1628,
0.9
V
Operation Start Voltage 1 (* 2)
VST1-1
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
2.0
V
VDD ≠VOUT1: IOUT1=1mA
Oscillation Start Voltage 1
VST2-1
FB1=0V
0.8
V
Maximum Duty Ratio 1
MAXDTY1 Same as IDD1
75
80
85
%
PFM Duty Ratio 1
PFMDTY1 No Load, VPWM1=0V
22
30
38
%
Efficiency 1
EFFI1
IOUT1=100mA, N-ch MOSFET: XP161A1355P
83
%
Soft-Start Time 1
TSS1
VOUT1×0.95V, CE1=0V→0.65V
5.0
10.0
20.0
ms
EXT1 "High" ON Resistance
REXTBH1
FB1=0, EXT1=VDD-0.4V
28
47
Ω
EXT1 "Low" ON Resistance
REXTBL1
EN1=FB2=0V, EXT1=0.4V
22
30
Ω
PWM1 "High" Voltage
VPWMH1
No Load
0.65
V
PWM1 "Low" Voltage
VPWML1
No Load
0.20
V
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
①
CIRCUIT
⑤
②
①
④
④
⑥
⑥
⑥
⑦
⑦
⑥
⑥
Ta=25℃
MAX. UNITS
0.918
V
CIRCUIT
⑧
0.9
V
③
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
XC9501
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9501B095A
Common Characteristics
PARAMETER
Supply Voltage (* 1)
SYMBOL
VDD
(FOSC = 500kHz)
CONDITIONS
VDD≧2.0V, IOUT1, 2 =1mA VOUT1, VOUT2
VOUT1
VIN≧0.9V, IOUT1, 2=1mA(* 2)
Output Voltage Range (* 4)
VOUTSET
VOUT2
VOUT1
VIN≧0.9V, IOUT1, 2=1mA(* 3)
VOUT2
Supply Current 1
IDD1
FB1, 2=0V
EN1=3.0V, EN2=0V, FB1=0V
Supply Current 1-1
IDD1-1
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
Supply Current 1-2
IDD1-2
FB1=1.0V, FB2=0V
Supply Current 2
IDD2
FB1, 2=1.0V
Stand-by Current
ISTB
Same as IDD1, EN1=EN2=0V
Switching Frequency
FOSC
Same as IDD1
EN1, 2 "High" Voltage
VENH
FB1, 2=0V
EN1, 2 "Low" Voltage
VENL
FB1, 2=0V
EN1, 2 "High" Current
IENH
FB1, 2=3.0V
EN1, 2 "Low" Current
IENL
EN1, 2=0V, FB1,2=3.0V
PWM1, 2 "High" Current
IPWMH
FB1, 2=3.0V, PWM=3.0V
PWM1, 2 "Low" Current
IPWML
FB1, 2=3.0V,PWM=0V
FB1, 2 "High" Current
IFBH
FB1, 2=3.0V
FB1, 2 "Low" Current
VFBL
FB1, 2=1.0V
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
Step-Up Controller
TYP.
165
-
110
220
μA
④
-
130
270
μA
④
425
0.65
-
100
500
-
200
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
PARAMETER
FB2 Voltage
Step-Up Controller
SYMBOL
VFB2
MAX. UNITS
10.0
V
V
10.0
V
V
V
10.0
V
350
μA
(FOSC = 500kHz)
CONDITIONS
MIN.
TYP.
VDD=3.0V, VIN=1.5V, IOUT1=10mA
0.882 0.900
Using Tr: 2SD1628,
Operation Start Voltage 1(* 2)
VST1-1
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
VDD ≠VOUT1: IOUT1=1mA
Oscillation Start Voltage 1
VST2-1
FB1=0V
Maximum Duty Ratio 1
MAXDTY1 Same as IDD1
75
80
PFM Duty Ratio 1
PFMDTY1 No Load, VPWM1=0V
22
30
Efficiency 1
EFFI1
IOUT1=100mA, N-ch MOSFET: XP161A1355P
83
Soft-Start Time 1
TSS1
VOUT1×0.95V, CE1=0V→0.65V
5.0
10.0
EXT1 "High" ON Resistance
REXTBH1
FB1=0, EXT1=VDD-0.4V
28
EXT1 "Low" ON Resistance
REXTBL1
EN1=FB2=0V, EXT1=0.4V
22
PWM1 "High" Voltage
VPWMH1
No Load
0.65
PWM1 "Low" Voltage
VPWML1
No Load
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics
SYMBOL
VFB1
Ta=25℃
MIN.
2.0
0.9
2.0
0.9
0.9
2.0
-
CIRCUIT
①
②
③
④
Ta=25℃
MAX. UNITS
0.918
V
CIRCUIT
⑤
0.9
V
②
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
(FOSC = 500kHz)
CONDITIONS
MIN.
TYP. MAX. UNITS
VDD=3.0V, VIN=1.5V, IOUT2=10mA
0.882 0.900 0.918
V
Using Tr: 2SD1628,
0.9
V
Operation Start Voltage 2 (* 3)
VST1-2
IOUT2=1.0mA, RFB21=200kΩ,RFB22=75kΩ
2.0
V
VDD ≠ VOUT2 : IOUT2=1mA
Oscillation Start Voltage 2
VST2-2
FB2=0V
0.8
V
Maximum Duty Ratio 2
MAXDTY2 Same as IDD1
75
80
85
%
PFM Duty Ratio 2
PFMDTY2 No Load, VPWM2=0V
22
30
38
%
Efficiency 2
EFFI2
IOUT2=100mA, N-ch MOSFET: XP161A1355P
83
%
Soft-Start Time 2
TSS2
VOUT2×0.95V, EN2=0V→0.65V
5.0
10.0
20.0
ms
EXT2 "High" ON Resistance
REXTBH2
FB2=0, EXT2=VDD-0.4V
28
47
Ω
EXT2 "Low" ON Resistance
REXTBL2
EN2=FB2=0V, EXT2=0.4V
22
30
Ω
PWM2 "High" Voltage
VPWMH2
No Load
0.65
V
PWM2 "Low" Voltage
VPWML2
No Load
0.20
V
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
Ta=25℃
CIRCUIT
⑧
③
①
④
④
⑨
⑨
⑨
⑦
⑦
⑨
⑨
7/27
XC9501 Series
■ELECTRICAL CHARACTERISTICS (Continued)
Notes:
* 1: Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are
stabilized at VDD ≧2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or
other power sources.
* 2: Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output
voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's
(output 2) EN2 pin should be set to disable. Once output voltage VOUT1 is more than 2.0V, the EN2 pin should be
set to enable.
* 3: Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output
voltage monitor pin (FB2) should be connected to VOUT2. With operations from VIN=0.9V, the 1st channel's
(output 1 EN1 pin should be set to disable. Once output voltage VOUT2 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 external components. We recommend, as a
guideline, that a level equal to more than 3 times that of the set output voltage be used.
* 5: EFFI={ [ (output voltage) x (output current) ] / [ (input voltage) x (input current) ] } x 100
■TYPICAL APPLICATION CIRCUITS
① VDD=VOUT1 Connection Example
② VDD=VIN Connection Example
8/27
XC9501
Series
■OPERATIONAL EXPLANATION
The XC9501series are multi-functional, 2 channel step-up DC/DC converter controller ICs with built-in high speed, low ON
resistance drivers.
<Error Amp. 1, 2>
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 Generator1, 2>
The ramp wave generator generates a saw-tooth waveform based on outputs from the Phase Shift Generator.
<PWM Comparator1, 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 Controller1, 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 Start1, 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 next page). 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 EXT pin will be kept at a low level (the external N-ch MOSFET
will be OFF). When both EN1 and EN2 are in a state of 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
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 1 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.
9/27
XC9501 Series
■OPERATIONAL EXPLANATION (Continued)
<Output Voltage Setting>
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 1MΩ or
less.
VOUT= 0.9×(RFB11+RFB12) /RFB12
The value of CFB1 (CFB2), speed-up capacitor for phase compensation, should be resulted fzfb=1/(2π×CFB1×RFB11) equal
to 12kHz. 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)
RFB11
(kΩ)
RFB12
(kΩ)
CFB1
(pF)
VOUT
(V)
RFB11
(kΩ)
RFB12
(kΩ)
CFB1
(pF)
VOUT
(V)
RFB11
(kΩ)
RFB12
(kΩ)
CFB1
(pF)
1.5
220
330
62
2.7
360
180
33
12.0
160
13
82
1.8
220
220
62
3.0
560
240
24
-
-
-
-
2.0
330
270
39
3.3
200
75
62
-
-
-
-
2.2
390
270
33
5.0
82
18
160
-
-
-
-
2.5
390
220
33
8.0
120
15
100
-
-
-
-
The same method can be also adopted for channel two (output 2).
[External Components]
Tr : * MOSFET
XP161A1355PR (N-ch Power MOSFET, TOREX)
Note: VGS breakdown voltage of this Transistor 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 : MA2Q737 (Schottky, MATSUSHITA)
CMS02 (Schottky, TOSHIBA)
L
: 47μH
(CDRH5D28, SUMIDA, FOSC = 100kHz)
22μH
(CDRH5D28, SUMIDA, FOSC = 180kHz)
15μH
(CDRH5D28, SUMIDA, FOSC = 300kHz)
10μH
(CDRH5D28, SUMIDA, FOSC = 500kHz)
CL : 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)
10/27
* NPN Transistor
2SD1628
(SANYO)
RB : 500Ω
(Adjust in accordance with load & Tr.'s HFE.)
CB : 2200pF (Ceramic)
Set up according to the equation below.
CB ≦ 1/(2π× RB×Fosc×0.7)
XC9501
Series
■TEST CIRCUITS
11/27
XC9501 Series
■TEST CIRCUITS (Continued)
12/27
XC9501
Series
■EXTERNAL COMPONENTS
Circuit 1, Circuit 2, and Circuit 3
L1, L2 : 47μH (CDRH5D28, SUMIDA)
: XC9501B091A
22μH (CDRH5D28, SUMIDA)
: XC9501B092A
15μH (CDRH5D28, SUMIDA)
: XC9501B093A
10μH (CDRH5D28, SUMIDA)
: 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×π×CFB1×RFB11) = 1kHz ~50kHz ( 12kHz usual)
fzfb=1/(2×π×CFB2×RFB21) = 1kHz ~50kHz ( 12kHz usual)
Circuit 6 and Circuit 9
L1, L2 : 47μH (CDRH5D28, SUMIDA)
: XC9501B091A
22μH (CDRH5D28, SUMIDA)
: XC9501B092A
15μH (CDRH5D28, SUMIDA)
: XC9501B093A
10μH (CDRH5D28, SUMIDA)
: 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 (CDRH5D28, SUMIDA)
MA2Q737 (Schottky diode, MATSUSHITA)
16MCE476MD2 (Tantalum, NIHON CHEMICON)
16MCE476MD2 (Tantalum, NIHON CHEMICON)
XP161A1355P (TOREX)
■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.
2. Ratings
Use the XC9501 series and peripheral components within the limits of their ratings.
13/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
FOSC=180kHz, VOUT1, 2= 1.5V
FOSC=180kHz, VOUT1, 2= 2.5V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.7
1.7
PWM/PFM Switching Control
PWM Control
1.6
Output Voltage1, 2 V OUT1 , 2(V)
Output Voltage1, 2 V OUT1, 2 (V)
PWM/PFM Switching Control
PWM Control
1.5
VIN=0.9V
1.4
1.2V
1.3
1.2
1.5V
2.6
2.5
VIN=0.9V
2.3
2.2
0.1
1
10
100
1000
0.1
Output Current 1, 2 IOUT1, 2 (mA)
1
Output Voltage1, 2 VOUT1, 2 (V)
2.7V
3.3
VIN=0.9V
3.2
1.2V,1.5V
3.1
3.0
4.2V
PWM/PFM Switching Control
PWM Control
5.1
5.0
VIN=1.5V
4.9
2.7V
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
4.8
0.1
1
10
100
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2 = 8.0V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1265P
8.2
5.0V
PWM/PFM Switching Control
PWM Control
Output Voltage1, 2 V OUT1, 2 (V)
3.3V
4.7
0.1
8.1
8.0
VIN=3.3V
4.2V
7.9
7.8
7.7
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
14/27
1000
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
5.2
3.5
3.4
100
FOSC=180kHz, VOUT1, 2= 5.0V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control
PWM Control
10
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
Output Voltage1, 2 V OUT1, 2 (V)
1.2V
2.4
PWM/PFM Switching Control
1000
XC9501
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1, 2= 2.5V
FOSC=300kHz, VOUT1, 2= 3.3V
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.7
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
3.5
PWM/PFM Switching Control
PWM Control
1.5V
2.6
Output Voltage1, 2 V OUT1, 2 (V)
Output Voltage1, 2 V OUT1, 2 (V)
PWM/PFM Switching Control
PWM Control
2.5
2.4
VIN=0.9V
1.2V
2.3
2.2
2.7V
3.4
3.3
VIN=0.9V
3.2
1.2V
3.1
3.0
0.1
1
10
100
1000
0.1
1
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
FOSC=500kHz, VOUT1, 2= 2.5V
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.7
5.2
PWM/PFM Switching Control
PWM Control
5.1
3.3V
4.2V
5.0
4.9
VIN=1.2V
1.5V
2.7V
4.8
Output Voltage1, 2 V OUT1, 2 (V)
PWM/PFM Switching Control
PWM Control
Output Voltage1, 2 V OUT1, 2 (V)
10
Output Current 1, 2 IOUT1, 2 (mA)
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.6
1.5V
2.5
VIN=0.9V
2.4
1.2V
2.3
2.2
4.7
0.1
1
10
100
0.1
1000
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
FOSC=500kHz, VOUT1, 2= 5.0V
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
3.5
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
5.2
PWM/PFM Switching Control
PWM Control
2.7V
3.4
1.5V
3.3
3.2
VIN=0.9V
4.2V
PWM/PFM Switching Control
PWM Control
Output Voltage1, 2 V OUT1, 2 (V)
Output Voltage1, 2 V OUT1, 2 (V)
1.5V
1.2V
3.1
3.0
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
Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
PWM/PFM Switching Control
15/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current
FOSC=180kHz, VOUT1, 2= 1.5V
FOSC=180kHz, VOUT1, 2= 2.5V
L=22μ H(CDRH5D28), C L=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
80
80
Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
60
VIN=0.9V
1.2V
40
20
60
VIN=0.9V
40
20
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
0
0
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
FOSC=180kHz, VOUT1, 2= 5.0V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
80
80
2.7V
60
VIN=0.9V 1.2V
Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
1.5V
1.2V
1.5V
40
20
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
1000
0.1
1
10
100
Output Current 1, 2 IOUT1, 2 (mA)
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 8.0V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1265P
100
Efficiency1, 2 EFFI 1, 2 (%)
80
5.0V
VIN=3.3V
60
4.2V
40
20
PWM/PFM Switching Control
PWM Control
0
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
16/27
PWM/PFM Switching Control
1000
XC9501
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current (Continued)
FOSC=300kHz, VOUT1, 2= 3.3V
FOSC=300kHz, VOUT1, 2= 2.5V
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
100
80
80
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
2.7V
1.5V
60
VIN=0.9V
1.2V
40
20
1.2V
60
VIN=0.9V
1.5V
40
20
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
0
0
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
FOSC=500kHz, VOUT1, 2= 2.5V
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
100
PWM/PFM Switching Control
PWM Control
80
4.2V
60
3.3V
VIN=1.2V
40
2.7V
1.5V
Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
80
1.2V
VIN=0.9V
40
20
PWM/PFM Switching Control
PWM Control
20
1.5V
60
0
0
0.1
1
10
100
0.1
1000
100
FOSC=500kHz, VOUT1, 2= 3.3V
FOSC=500kHz, VOUT1, 2= 5.0V
1000
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
4.2V
PWM/PFM Switching Control
PWM Control
80
Efficiency1, 2 EFFI 1, 2 (%)
80
Efficiency1, 2 EFFI 1, 2 (%)
10
Output Current 1, 2 IOUT1, 2 (mA)
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
1
Output Current 1, 2 IOUT1, 2 (mA)
2.7V
60
VIN=0.9
1.2V 1.5V
40
3.3V
60
1.2V
40
20
20
2.7V
VIN=0.9V 1.5V
PWM/PFM Switching Control
PWM Control
0
0
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
PWM/PFM Switching Control
17/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current
FOSC=180kHz, VOUT1, 2= 1.5V
100
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
80
Ripple Voltage1, 2 (mV)
80
Ripple Voltage1, 2 (mV)
FOSC=180kHz, VOUT1, 2= 2.5V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
60
1.2V
VIN=0.9V
40
20
VIN=0.9V
1.2V
1.5V
60
40
20
0
0
0.1
1
10
100
1000
0.1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
FOSC=180kHz, VOUT1, 2= 5.0V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
80
PWM/PFM Switching Control
PWM Control
80
60
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
1
Output Current 1, 2 IOUT1, 2 (mA)
1.5V
VIN=0.9V
40
2.7V
20
4.2V
2.7V
60
VIN=1.5V
40
3.3V
20
1.2
0
0
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
0.1
1
10
100
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 8.0V
L=22μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1265P
100
PWM/PFM Switching Control
PWM Control
Ripple Voltage1, 2 (mV)
80
4.2V
60
5.0V
VIN=3.3V
40
20
0
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
18/27
PWM/PFM Switching Control
1000
XC9501
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued)
FOSC=300kHz, VOUT1, 2= 3.3V
FOSC=300kHz, VOUT1, 2= 2.5V
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
100
PWM/PFM Switching Control
PWM Control
PWM/PFM Switching Control
PWM Control
1.5V
1.2
60
VIN=0.9V
40
VIN=0.9V
40
2.7V
0
0
0.1
1
10
100
0.1
1000
1
10
100
Output Current 1, 2 IOUT1, 2 (mA)
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
FOSC=500kHz, VOUT1, 2= 2.5V
L=15μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control
PWM Control
100
PWM/PFM Switching Control
PWM Control
Ripple Voltage1, 2 (mV)
1.5V
60
1.5V
80
2.7V
VIN=1.2V
40
20
1000
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
4.2V
3.3V
80
Ripple Voltage1, 2 (mV)
1.2V
60
20
20
1.2V
60
VIN=0.9V
40
20
0
0
0.1
1
10
100
1000
0.1
Output Current 1, 2 IOUT1, 2 (mA)
PWM/PFM Switching Control
PWM Control
1000
100
PWM/PFM Switching Control
PWM Control
2.7V
80
Ripple Voltage1, 2 (mV)
1.2V
60
VIN=0.9V
40
20
100
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
2.7V
80
10
FOSC=500kHz, V OUT1, 2= 5.0V
L=10μ H(CDRH5D28), CL=94μ F(Tantalum)
SD:CMS02, Tr:XP161A1355P
100
1
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
Ripple Voltage1, 2 (mV)
1.5V
80
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
80
1.5V
60
1.2V
Vin=0.9V
40
4.2V
20
1.5V
3.3V
0
0
0.1
1
10
100
Output Current 1, 2 IOUT1, 2 (mA)
1000
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
19/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) Supply Current vs. Supply Voltage
(5) Supply Current 1-1 vs. Supply Voltage
XC9501B092 (180kHz)
XC9501B092 (180kHz)
400
Supply Current 1-1 IDD1-1 μ
( A)
Supply Current 1 IDD1(μA)
500
Topr=85℃
25℃
- 40℃
400
300
200
100
Topr=85o C
25o C
- 40o C
300
200
100
0
0
0
2
4
6
8
0
10
2
(6) Supply Current 1-2 vs. Supply Voltage
10
XC9501B092 (180kHz)
400
400
Topr=85℃
25℃
- 40℃
300
Supply Current 2 IDD2 (μA)
Supply Current1-2 IDD1-2 (μA)
8
(7) Supply Current 2 vs. Supply Voltage
XC9501B092 (180kHz)
200
100
0
Topr=85℃
25℃
- 40℃
300
200
100
0
0
2
4
6
8
10
0
Supply Voltage VDD (V)
2
4
6
8
10
Supply Voltage VDD (V)
(8) Stand-by Current vs. Supply Voltage
(9) Oscillation Frequency vs. Supply Voltage
XC9501B092 (180kHz)
XC9501B092
XC9501B092 (180kHz)
(180kHz)
210
Oscillation Frequency Fosc(kHz)
10
10
Stand-by
Stand-by Current
Current ISTB
ISTB(μA)
(μA)
6
Supply Voltage VDD (V)
Supply Voltage VDD (V)
88
66
Topr=85
Topr=85℃
℃
25
25℃
℃
-- 40
40℃
℃
44
22
200
190
Topr=25℃
180
170
85℃
160
- 40℃
150
00
00
22
44
66
88
Supply
Supply Voltage
Voltage VDD
VDD (V)
(V)
20/27
4
10
10
0
2
4
6
8
Supply Voltage VDD (V)
10
XC9501
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(10) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage
(11) EN1, 2 'H' 'L' Voltage vs. Supply Voltage
XC9501B092 (180kHz)
XC9501B092 (180kHz)
0.8
EN1, 2 'H' ' L' Voltage VEN1, 2 (V)
PWM1, 2 'H' ' L' Voltage Vpwm1, 2
(V)
0.8
0.6
- 40℃
0.4
85℃
0.2
Topr=25℃
0.6
- 40℃
0.4
85℃
0.2
Topr=25℃
0
0
0
2
4
6
8
0
10
(12) Maximum Duty Ratio1, 2 vs. Supply Voltage
6
8
10
XC9501B092 (180kHz)
90
25
Softstart Time1, 2 TSS (msec)
Max Duty Ratio 1, 2 Maxdty1, 2( %)
4
(13) Soft-start Time1, 2 vs. Supply Voltage
XC9501B092 (180kHz)
Topr=85 C
25o C
- 40o C
o
85
80
75
70
20
15
10
5
0
65
0
2
4
6
8
0
10
2
4
6
8
10
Supply Voltage VDD (V)
Supply Voltage VDD (V)
(14) EXT1, 2 High ON Resistance vs. Supply Voltage
(15) EXT1, 2 Low ON Resistance vs. Supply Voltage
XC9501B092 (180kHz)
XC9501B092 (180kHz)
50
50
Topr=85℃
25℃
- 40℃
40
EXT1, 2 L ON Resistance(Ω)
EXT1, 2 H ON Resistance(Ω)
2
Supply Voltage VDD (V)
Supply Voltage VDD (V)
30
20
10
Topr=85℃
25℃
- 40℃
40
30
20
10
0
0
0
2
4
6
Supply Voltage VDD (V)
8
10
0
2
4
6
8
10
Supply Voltage VDD (V)
21/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Operation Start Voltage vs. Ambient Temperature
(17) Operation Retention Voltage vs. Ambient Temperature
XC9501B092 (180kHz,VOUT=3.3V)
XC9501B092(180kHz,VOUT=3.3V)
L=22μH(CDRH5D28), CL=47μF(Tantalum)
SD:MA2Q737, Tr:2SD1628G
L=22μH(CDRH5D28), CL=47μF(Tantalum)
SD:MA2Q737, Tr:2SD1628G
0.8
1
Operation Retention Voltage
VHLD(V)
Operation Start-Up Voltage
VST1 (V)
1.2
0.8
0.6
0.4
0.2
IOUT=1mA
0
-40 -20
0
20
40
60
80
0.6
0.4
0.2
IOUT=1mA
0
-40
100
Ambient Temperature Ta (℃ )
20
40
60
80
XC9501B092 (180kHz)
40
1
PFM Duty
Duty Ratio
Ratio1,1,2(%)
2 (%)
PFM
0.8
0.6
0.4
0.2
-20
0
20
40
60
80
100
Topr=85℃
25℃
- 40℃
35
30
25
20
0
Ambient Temperature Ta ( ℃ )
2
4
6
8
Supply Voltage VDD (V)
(20) Output Voltage vs. Ambient Temperature
XC9501B093(300kHz)
Output Voltage VOUT (V)
3.5
L=22μH(CDRH5D28), CL=94μF(Tantalum)
Tr:XP161A1265P, SD:CMS02
3.4
3.3
3.2
VIN=1.8V
IOUT=200mA
3.1
3.0
-50
-20
10
40
70
Ambient Temperature Ta ( ℃ )
22/27
100
(19) PFM Duty Ratio 1, 2 vs. Supply Voltage
XC9501B092(180kHz,VOUT=2.0V)
Oscillation Start-Up Voltage
VST2 (V)
0
Ambient Temperature Ta (℃ )
(18) Oscillation Start Voltage vs. Ambient Temperature
0
-40
-20
100
10
XC9501
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Load Transient Response (Continued)
< VOUT1, 2 = 3.3V, VIN = 2.0V, IOUT1, 2 =100μA
100mA >
● PWM Control
● PWM/PFM Switching Control
23/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Load Transient Response (Continued)
< VOUT1, 2 = 3.3V, VIN = 2.0V, IOUT1, 2 =10mA
● PWM Control
● PWM/PFM Switching Control
24/27
100mA >
XC9501
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Load Transient Response (Continued)
< PWM Controlled
PWM / PFM Switching Controlled >
● Soft-Start Wave Form
*CH1: EN2=GND when measurement
CH2: EN1=GND when measurement
25/27
XC9501 Series
■PACKAGING INFORMATION
●MSOP-10
●USP-10
* Soldering fillet surface is not
formed because the sides of
the pins are not plated.
■ MARKING RULE
←
13mm
→
●MSOP-10, USP-10
10 9 8 7 6
①Represents product series
① ②③
MARK
PRODUCT SERIES
2
XC9501B09xxx
②Represents type of DC/DC Controller
④ ⑤⑥
MARK
PRODUCT SERIES
B
XC9501B09xxx
③, ④Represents FB voltage
1 2 3 4 5
MSOP-10
(TOP VIEW)
MARK
③
④
0
9
VOLTAGE (V)
PRODUCT SERIES
0.9
XC9501B09xxx
⑤Represents oscillation frequency
MARK
1
2
3
5
USP-10
(TOP VIEW)
26/27
OSCILLATION FREQUENCY (kHz)
100
180
300
500
⑥Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
Note: No character inversion used
PRODUCT SERIES
XC9501B091xx
XC9501B092xx
XC9501B093xx
XC9501B095xx
XC9501
Series
1. The products and product specifications contained herein are subject to change without
notice to improve performance characteristics.
Consult us, or our representatives
before use, to confirmo low
thatatthe information in this catalog is up to date.
ll.
2. We assume no responsibility for any infringement of patents, patent
rights, or other
rights arising from the use of any information and circuitry in this catalog.
e, the Lx pin
3. Please ensure may
suitable
shipping controls (including fail-safe designs and aging
not
protection) are in force for equipment employing products listed in this catalog.
4. The products in this catalog are not developed, designed, or approved for use with such
equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this catalog within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We assume no responsibility for damage or loss due to abnormal use.
7. All rights reserved. No part of this catalog may be copied or reproduced without the
prior permission of Torex Semiconductor Ltd.
27/27