XC9501 Series
ETR0701_004a
2ch.Step-Up/Up DC/DC Controller ICs
■GENERAL DESCRIPTIO N
The XC9501 series are PWM controlled, PWM/PFM automatic switching controlled, multi-functi onal, 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 bet ween PWM control and PWM/PFM automatic switching control usi ng
external signals. Control s witches 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
●PDAs
●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 )
.
■FEATURES
2ch DC/DC Controller : (Step-Up + Step-Up)
Input Voltage Range : 0.9V ~ 10V
Supply Voltage Range
Output Voltage Range : 1.5V ~ 30V (set by FB1/FB2 pins)
Output Current : More than 200mA
(V
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
Environmentally Friendly
■TYPICAL PERFORMANCE
CHARACTERISTICS
●Efficiency vs. Output Current
☆GreenOperation Compatible
: 2.0V ~ 10V
IN=1.8V, VOUT=3.3V)
: EU RoHS Compliant, Pb Free
1/27
XC9501 Series
■PIN CONFIGURATION
■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 Supply Voltage
Channel 1: Output Voltage Monitor Feedback Pin
3 FB1
<Threshold value: 0.9V. Output Voltage can be set freely by connecting split resistor
between V
OUT1 and GND.>
Channel 1: PWM/PFM Switching Pin
4 PWM1
<Control Output 1. PMW control when connected to V
connected to GND.>
Channel 1: Enable Pin
5 EN1
<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
6 EN2
<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
7 PWM2
<Control Output 2. PMW control when connected to V
connected to GND.>
Channel 2: Output Voltage Monitor Feedback Pin
8 FB2
<Threshold value: 0.9V. Output Voltage can be set freely by connecting split resistor
between V
OUT2 and GND.>
9 GND Ground
10 EXT2
■PRODUCT CLASSIFICATION
●Ordering Information
XC9501 ①②③④⑤⑥-⑦
DESIGNATOR
(*1)
(*2)
①
②③
④
⑤⑥-⑦
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office or
representative. (Standard orientation: ⑤R-⑦, Reverse orientation: ⑤L-⑦)
Channel2: External Transistor Drive Pin
<Connected to N-ch Power MOSFET Gate>
(*1)
DESCRIPTION
Type of DC/DC Controller
Output Voltage
Oscillation Frequency
Packages
Taping Type
(*１)
SYMBOL DESCRIPTION
B Standard (10 Pin)
09
1 100kHz (custom)
2 180kHz
3 300kHz (custom)
5 500kHz (custom)
AR MSOP-10
AR-G MSOP-10
DR USP-10
DR-G USP-10
2/27
USP-10
(BOTTOM VIEW)
DD, PWM/PFM auto Switching when
DD, PWM/PFM auto Switching when
FB Voltage: 0.9V
A
■BLOCK DIAGRAM
■
BSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNITS
VDD Pin Voltage VDD - 0.3 ~ 12.0 V
FB1, 2 Pin Voltage VFB - 0.3 ~ 12.0 V
EN1, 2 Pin Voltage VEN - 0.3 ~ 12.0 V
PWM1, 2 Pin Voltage VPWM - 0.3 ~ 12.0 V
EXT1, 2 Pin Voltage VEXT - 0.3 ~ VDD + 0.3 V
EXT1, 2 Pin Current IEXT
Power Dissipation
Operating Temperature Range Topr - 40 ~ + 85
Storage Temperature Range Tstg - 55 ~ + 125
MSOP-10 150
USP-10
Pd
±100
150
XC9501
Series
Ta=25℃
mA
mW
℃
℃
3/27
XC9501 Series
■ELECTRICAL CHARACTERISTICS
XC9501B091A Common Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Supply Voltage
Output Voltage Range
Supply Current 1 IDD1 FB1, 2=0V - 70 100 μA ④
Supply Current 1-1 IDD1-1
Supply Current 1-2 IDD1-2
Supply Current 2 IDD2 FB1, 2=1.0V - 60 90 μA ④
Stand-by Current ISTB Same as IDD1, EN1=EN2=0V - - 3.0 μA ④
Oscillation Frequency FOSC Same as IDD1 85 100 115 kHz ④
EN1, 2 "High" Voltage VENH FB1, 2=0V 0.65 - - V ④
EN1, 2 "Low" Voltage VENL FB1, 2=0V - - 0.20 V ④
EN1, 2 "High" Current IENH FB1, 2=3.0V - - 0.50 μA ④
EN1, 2 "Low" Current IENL EN1, 2=0V, FB1, 2=3.0V - - -0.50 μA ④
PWM1, 2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V - - 0.50 μA ④
PWM1, 2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V - - -0.50 μA ④
FB1, 2 "High" Current IFBH FB1, 2=3.0V - - 0.50 μA ④
FB1, 2 "Low" Current VFBL FB1, 2=1.0V - - -0.50 μA ④
Unless otherwise stated, VDD =3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
(* 1)
VDD 2.0 - 10.0 V -
VDD≧2.0V IOUT1,2=1mA VOUT1, VOUT2 0.9 - - V ①
(* 4)
VIN ≧0.9V IOUT1,2=1mA
V
IN≧0.9V IOUT1,2=1mA
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
FB1=1V, FB2=0V
(* 2)
(* 3)
VOUT1 2.0 - 10.0 V
V
VOUT1 0.9 - - V
V
Output 1 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB1 Voltage VFB1 VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 0.918 V ⑤
Operation Start-up
Voltage 1
Oscillation Start Voltage 1 VST2-1 FB1=0V - - 0.8 V ④
Maximum Duty Ratio 1 MAXDTY1 Same as IDD1 75 80 88 % ④
PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 38 % ⑥
Efficiency 1 EFFI1 IOUT1=100mA N-ch MOSFET: XP161A1355P - 83 - % ⑥
Soft-Start Time 1 TSS1 VOUT1×0.95V, EN1=0V→0.65V 5.0 10.0 20.0 ms ⑥
EXT1 "High" ON Resistance
EXT1 "Low" ON Resistance
PWM1 "High" Voltage VPWMH1 No Load 0.65 - - V ⑥
PWM1 "Low" Voltage VPWML1 No Load - - 0.20 V ⑥
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
(* 2)
V
ST1-1
REXTBH1 FB1=0, EXT1=VDD-0.4V - 28 47 Ω ⑦
REXTBL1 EN1=FB2=0V, EXT1=0.4V - 22 30 Ω ⑦
Using Tr: 2SD1628,
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
V
DD ≠VOUT1: IOUT1=1mA - - 2.0 V ①
Output 2 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
FB2 Voltage VFB2 VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 0.918 V ⑧
Operation Start-up
Voltage2
Oscillation Start Voltage 2 VST2-2 FB2=0V - - 0.8 V ④
Maximum Duty Ratio 2 MAXDTY2 Same as IDD1 75 80 85 % ④
PFM Duty Ratio 2 PFMDTY2 No Load, VPWM2=0V 22 25 38 % ⑨
Efficiency 2 EFFI2 IOUT2=100mA, N-ch MOSFET: XP161A1355P - 83 - % ⑨
Soft-Start Time 2 TSS2 VOUT1 × 0.95V, EN2=0V→0.65V 5.0 10.0 20.0 ms ⑨
EXT2 "High" ON Resistance
EXT2 "Low" ON Resistance
PWM2 "High" Voltage VPWMH2 No Load 0.65 - - V ⑨
PWM2 "Low" Voltage VPWML2 No Load - - 0.20 V ⑨
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
(* 3)
V
ST1-2
REXTBH2 FB2=0, EXT2=VDD-0.4V - 28 47 Ω ⑦
REXTBL2 EN2=FB2=0V, EXT2=0.4V - 22 30 Ω ⑦
Using Tr: 2SD1628,
IOUT1=1.0mA, RFB21=200kΩ,RFB22=75kΩ
V
DD≠VOUT2 : IOUT2=1mA - - 2.0 V ①
4/27
(FOSC = 100kHz)
OUT2 0.9 - - V
OUT2 2.0 - 10.0 V
- 50 80 μA ④
- 80 150 μA ④
(FOSC = 100kHz)
- - 0.9 V ②
(FOSC = 100kHz)
- - 0.9 V ③
Ta=25℃
②
③
Ta=25℃
Ta=25℃
CIRCUIT
■ELECTRICAL CHARACTERISTICS (Continued)
XC9501B092A Common Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Supply Voltage
(* 1)
VDD 2.0 - 10.0 V -
VDD≧2.0V IOUT1,2=1mA VOUT1, VOUT2 0.9 - - V ①
VOUT1 2.0 - 10.0 V
V
VOUT1 0.9 - - V
V
Output Voltage Range
(* 4)
VIN ≧0.9V IOUT1,2=1mA
V
IN≧0.9V IOUT1,2=1mA
(* 2)
(* 3)
Supply Current 1 IDD1 FB1, 2=0V - 90 160 μA ④
Supply Current 1-1 IDD1-1
Supply Current 1-2 IDD1-2
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
FB1=1V, FB2=0V
Supply Current 2 IDD2 FB1, 2=1.0V - 70 132 μA ④
Stand-by Current ISTB Same as IDD1, EN1=EN2=0V - - 3.0 μA ④
Oscillation Frequency FOSC Same as IDD1 153 180 207 kHz ④
EN1, 2 "High" Voltage VENH FB1, 2=0V 0.65 - - V ④
EN1, 2 "Low" Voltage VENL FB1, 2=0V - - 0.20 V ④
EN1, 2 "High" Current IENH FB1, 2=3.0V - - 0.50 μA ④
EN1, 2 "Low" Current IENL EN1, 2=0V, FB1, 2=3.0V - - -0.50 μA ④
PWM1, 2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V - - 0.50 μA ④
PWM1, 2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V - - -0.50 μA ④
FB1, 2 "High" Current IFBH FB1, 2=3.0V - - 0.50 μA ④
FB1, 2 "Low" Current VFBL FB1, 2=1.0V - - -0.50 μA ④
Unless otherwise stated, VDD =3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Output 1 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB1 Voltage VFB1 VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 0.918 V ⑤
Operation Start-up
Voltage 1
(* 2)
V
ST1-1
Using Tr: 2SD1628,
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
V
DD ≠VOUT1: IOUT1=1mA - - 2.0 V ①
Oscillation Start Voltage 1 VST2-1 FB1=0V - - 0.8 V ④
Maximum Duty Ratio 1 MAXDTY1 Same as IDD1 75 80 88 % ④
PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 38 % ⑥
Efficiency 1 EFFI1 IOUT1=100mA N-ch MOSFET: XP161A1355P - 83 - % ⑥
Soft-Start Time 1 TSS1 VOUT1×0.95V, EN1=0V→0.65V 5.0 10.0 20.0 ms ⑥
EXT1 "High" ON Resistance
EXT1 "Low" ON Resistance
REXTBH1 FB1=0, EXT1=VDD-0.4V - 28 47 Ω ⑦
REXTBL1 EN1=FB2=0V, EXT1=0.4V - 22 30 Ω ⑦
PWM1 "High" Voltage VPWMH1 No Load 0.65 - - V ⑥
PWM1 "Low" Voltage VPWML1 No Load - - 0.20 V ⑥
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
FB2 Voltage VFB2 VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 0.918 V ⑧
Operation Start-up
Voltage2
(* 3)
V
ST1-2
Oscillation Start Voltage 2 VST2-2 FB2=0V - - 0.8 V ④
Maximum Duty Ratio 2 MAXDTY2 Same as IDD1 75 80 85 % ④
PFM Duty Ratio 2 PFMDTY2 No Load, VPWM2=0V 22 25 38 % ⑨
Efficiency 2 EFFI2 IOUT2=100mA, N-ch MOSFET: XP161A1355P - 83 - % ⑨
Soft-Start Time 2 TSS2 VOUT1 × 0.95V, EN2=0V→0.65V 5.0 10.0 20.0 ms ⑨
EXT2 "High" ON Resistance
EXT2 "Low" ON Resistance
REXTBH2 FB2=0, EXT2=VDD-0.4V - 28 47 Ω ⑦
REXTBL2 EN2=FB2=0V, EXT2=0.4V - 22 30 Ω ⑦
PWM2 "High" Voltage VPWMH2 No Load 0.65 - - V ⑨
PWM2 "Low" Voltage VPWML2 No Load - - 0.20 V ⑨
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
Using Tr: 2SD1628,
IOUT1=1.0mA, RFB21=200kΩ,RFB22=75kΩ
V
DD≠VOUT2 : IOUT2=1mA - - 2.0 V ①
(FOSC = 180kHz)
OUT2 0.9 - - V
OUT2 2.0 - 10.0 V
- 60 120 μA ④
- 80 150 μA ④
(FOSC = 180kHz)
- - 0.9 V ②
(FOSC = 180kHz)
- - 0.9 V ③
XC9501
Series
Ta=25℃
②
③
Ta=25℃
Ta=25℃
CIRCUIT
5/27
XC9501 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9501B093A Common Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Supply Voltage
Output Voltage Range
Supply Current 1 IDD1 FB1, 2=0V - 110 250 μA ④
Supply Current 1-1 IDD1-1
Supply Current 1-2 IDD1-2
Supply Current 2 IDD2 FB1, 2=1.0V - 80 160 μA ④
Stand-by Current ISTB Same as IDD1, EN1=EN2=0V - - 3.0 μA ④
Oscillation Frequency FOSC Same as IDD1 255 300 345 kHz ④
EN1, 2 "High" Voltage VENH FB1, 2=0V 0.65 - - V ④
EN1, 2 "Low" Voltage VENL FB1, 2=0V - - 0.20 V ④
EN1, 2 "High" Current IENH FB1, 2=3.0V - - 0.50 μA ④
EN1, 2 "Low" Current IENL EN1, 2=0V, FB1, 2=3.0V - - -0.50 μA ④
PWM1, 2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V - - 0.50 μA ④
PWM1, 2 "Low" Current IPWML FB1, 2=3.0V,PWM=0V - - -0.50 μA ④
FB1, 2 "High" Current IFBH FB1, 2=3.0V - - 0.50 μA ④
FB1, 2 "Low" Current VFBL FB1, 2=1V - - -0.50 μA ④
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
(* 1)
VDD 2.0 - 10.0 V
VDD≧2.0V, IOUT1, 2 =1mA VOUT1, VOUT2
(* 4)
VOUTSET
VIN≧0.9V, IOUT1, 2=1mA
V
IN≧0.9V, IOUT1, 2=1mA
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
FB1=1.0V, FB2=0V
(* 2)
(* 3)
VOUT1 2.0 - 10.0 V
VOUT2 0.9 - - V
VOUT1 0.9 - - V
VOUT2 2.0 - 10.0 V
Output 1 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
FB1 Voltage VFB1 VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 0.918 V ⑤
Operation Start Voltage 1
Oscillation Start Voltage 1 VST2-1 FB1=0V - - 0.8 V ④
Maximum Duty Ratio 1 MAXDTY1 Same as IDD1 75 80 85 % ④
PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 38 % ⑥
Efficiency 1 EFFI1 IOUT1=100mA, N-ch MOSFET: XP161A1355P - 83 - % ⑥
Soft-Start Time 1 TSS1 VOUT1×0.95V, CE1=0V→0.65V 5.0 10.0 20.0 ms ⑥
EXT1 "High" ON Resistance
EXT1 "Low" ON Resistance
PWM1 "High" Voltage VPWMH1 No Load 0.65 - - V ⑥
PWM1 "Low" Voltage VPWML1 No Load - - 0.20 V ⑥
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
(* 2)
VST1-1
REXTBH1 FB1=0, EXT1=VDD-0.4V - 28 47 Ω ⑦
REXTBL1 EN1=FB2=0V, EXT1=0.4V - 22 30 Ω ⑦
Using Tr: 2SD1628,
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
V
DD ≠VOUT1: IOUT1=1mA - - 2.0 V ①
Output 2 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
FB2 Voltage VFB2 VDD=3.0V, VIN=1.5V, IOUT2=10mA 0.882 0.900 0.918 V ⑧
Operation Start Voltage 2
Oscillation Start-up Voltage2 VST2-2 FB2=0V - - 0.8 V ④
Maximum Duty Ratio 2 MAXDTY2 Same as IDD1 75 80 85 % ④
PFM Duty Ratio 2 PFMDTY2 No Load, VPWM2=0V 22 30 38 % ⑨
Efficiency 2 EFFI2 IOUT2=100mA, N-ch MOSFET: XP161A1355P - 83 - % ⑨
Soft-Start Time 2 TSS2 VOUT2×0.95V, EN2=0V→0.65V 5.0 10.0 20.0 ms ⑨
EXT2 "High" ON Resistance
EXT2 "Low" ON Resistance
PWM2 "High" Voltage VPWMH2 No Load 0.65 - - V ⑨
PWM2 "Low" Voltage VPWML2 No Load - - 0.20 V ⑨
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
(* 3)
VST1-2
REXTBH2 FB2=0, EXT2=VDD-0.4V - 28 47 Ω ⑦
REXTBL2 EN2=FB2=0V, EXT2=0.4V - 22 30 Ω ⑦
Using Tr: 2SD1628,
IOUT2=1.0mA, RFB21=200kΩ,RFB22=75kΩ
V
DD ≠VOUT2 : IOUT2=1mA - - 2.0 V ①
6/27
(FOSC = 300kHz)
0.9 - - V ①
- 80 150 μA ④
- 90 200 μA ④
(FOSC = 300kHz)
- - 0.9 V ②
(FOSC = 300kHz)
- - 0.9 V ③
Ta=25℃
②
③
Ta=25℃
CIRCUIT
Ta=25℃
CIRCUIT
■ELECTRICAL CHARACTERISTICS (Continued)
XC9501B095A Common Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Supply Voltage
Output Voltage Range
Supply Current 1 IDD1 FB1, 2=0V - 165 350 μA ④
Supply Current 1-1 IDD1-1
Supply Current 1-2 IDD1-2
Supply Current 2 IDD2 FB1, 2=1.0V - 100 200 μA ④
Stand-by Current ISTB Same as IDD1, EN1=EN2=0V - - 3.0 μA ④
Switching Frequency FOSC Same as IDD1 425 500 575 kHz ④
EN1, 2 "High" Voltage VENH FB1, 2=0V 0.65 - - V ④
EN1, 2 "Low" Voltage VENL FB1, 2=0V - - 0.20 V ④
EN1, 2 "High" Current IENH FB1, 2=3.0V - - 0.50 μA ④
EN1, 2 "Low" Current IENL EN1, 2=0V, FB1,2=3.0V - - -0.50 μA ④
PWM1, 2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V - - 0.50 μA ④
PWM1, 2 "Low" Current IPW ML FB1, 2=3.0V,PWM=0V - - -0.50 μA ④
FB1, 2 "High" Current IFBH FB1, 2=3.0V - - 0.50 μA ④
FB1, 2 "Low" Current VFBL FB1, 2=1.0V - - -0.50 μA ④
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
(* 1)
VDD 2.0 - 10.0 V
VDD≧2.0V, IOUT1, 2 =1mA VOUT1, VOUT2
(* 4)
VOUTSET
VIN≧0.9V, IOUT1, 2=1mA
V
IN≧0.9V, IOUT1, 2=1mA
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
FB1=1.0V, FB2=0V
(* 2)
(* 3)
VOUT1 2.0 - 10.0 V
OUT2 0.9 - - V
V
VOUT1 0.9 - - V
VOUT2 2.0 - 10.0 V
Output 1 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB1 Voltage VFB1 VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 0.918 V ⑤
Operation Start Voltage 1
Oscillation Start Voltage 1 VST2-1 FB1=0V - - 0.8 V ④
Maximum Duty Ratio 1 MAXDTY1 Same as IDD1 75 80 85 % ④
PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 38 % ⑥
Efficiency 1 EFFI1 IOUT1=100mA, N-ch MOSFET: XP161A1355P - 83 - % ⑥
Soft-Start Time 1 TSS1 VOUT1×0.95V, CE1=0V→0.65V 5.0 10.0 20.0 ms ⑥
EXT1 "High" ON Resistance
EXT1 "Low" ON Resistance
PWM1 "High" Voltage VPWMH1 No Load 0.65 - - V ⑥
PWM1 "Low" Voltage VPWML1 No Load - - 0.20 V ⑥
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
(* 2)
VST1-1
REXTBH1 FB1=0, EXT1=VDD-0.4V - 28 47 Ω ⑦
REXTBL1 EN1=FB2=0V, EXT1=0.4V - 22 30 Ω ⑦
Using Tr: 2SD1628,
IOUT=1.0mA, RFB11=200kΩ, RFB12=75kΩ
V
DD ≠VOUT1: IOUT1=1mA - - 2.0 V ①
Output 2 Characteristics Step-Up Controller
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB2 Voltage VFB2 VDD=3.0V, VIN=1.5V, IOUT2=10mA 0.882 0.900 0.918 V ⑧
Operation Start Voltage 2
Oscillation Start Voltage 2 VST2-2 FB2=0V - - 0.8 V ④
Maximum Duty Ratio 2 MAXDTY2 Same as IDD1 75 80 85 % ④
PFM Duty Ratio 2 PFMDTY2 No Load, VPWM2=0V 22 30 38 % ⑨
Efficiency 2 EFFI2 IOUT2=100mA, N-ch MOSFET: XP161A1355P - 83 - % ⑨
Soft-Start Time 2 TSS2 VOUT2×0.95V, EN2=0V→0.65V 5.0 10.0 20.0 ms ⑨
EXT2 "High" ON Resistance
EXT2 "Low" ON Resistance
PWM2 "High" Voltage VPWMH2 No Load 0.65 - - V ⑨
PWM2 "Low" Voltage VPWML2 No Load - - 0.20 V ⑨
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
(* 3)
VST1-2
REXTBH2 FB2=0, EXT2=VDD-0.4V - 28 47 Ω ⑦
REXTBL2 EN2=FB2=0V, EXT2=0.4V - 22 30 Ω ⑦
Using Tr: 2SD1628,
IOUT2=1.0mA, RFB21=200kΩ,RFB22=75kΩ
V
DD ≠ VOUT2 : IOUT2=1mA - - 2.0 V ①
(FOSC = 500kHz)
0.9 - - V ①
- 110 220 μA ④
- 130 270 μA ④
(FOSC = 500kHz)
- - 0.9 V ②
(FOSC = 500kHz)
- - 0.9 V ③
XC9501
Series
Ta=25℃
②
③
Ta=25℃
Ta=25℃
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 V
other power sources.
* 2: Although the IC's switching operations start from a V
voltage monitor pin (FB1) should be connected to V
(output 2) EN2 pin should be set to disable. Once output voltage V
set to enable.
* 3: Although the IC's switching operations start from a V
voltage monitor pin (FB2) should be connected to V
(output 1 EN1 pin should be set to disable. Once output voltage V
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
DD ≧2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or
IN of 0.9V, the IC's power supply pin (VDD) and output
OUT1. With operations from VIN=0.9V, the 2nd channel's
OUT1 is more than 2.0V, the EN2 pin should be
IN of 0.9V, the IC's power supply pin (VDD) and output
OUT2. With operations from VIN=0.9V, the 1st channel's
OUT2 is more than 2.0V, the EN1 pin should be set
8/27
p
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
am
'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 extern al 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 examp le, where traditionally,
efficiencies have been sacrificed during stand-by as a result of using PWM control (due to the noise problems ass ociated
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 (C
L) 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 beg in with a power supply voltage of V
DD<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 V
disable and turn it to enable when V
voltage monitor pin (FB2) are connected to V
V
OUT2 is more than 2.0V.
For power supply voltages of V
OUT1. When the IC starts operations from a VIN of 0.9V, set channel two's (output 2) EN2 pin to
OUT1 is more than 2.0V. Conversely, when IC 2' s power supply pin (VDD) and output
OUT2, set channel one's (output 1) EN1 pin to disable and turn it to enable when
DD<2.0V, oscillation may occur irrespective of the FB pin voltage. Should this hap pen, 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 V
voltages of V
DD>2.0V, the start-up sequence for EN1 and EN2 will not be required.
DD>2.0V or more. With po wer supply
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 eq uation, base d
on the values of R
less.
The value of C
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 R
[Typical Example]
[External Components]
Tr : * MOSFET
XP161A1355PR (N-ch Power MOSFET, TOREX)
SD : MA2Q737 (Schottky, MATSUSHITA)
CMS02 (Schottky , T OSHIBA)
L : 47μH (CDRH5D28, SUMIDA, FOSC = 100kHz)
CL : 16V, 47μF (Tantalum, NICHICHEMI, MCE Series)
FB11=200kΩ and RFB12=75kΩ, VOUT1=0.9
VOUT
(V)
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).
Note: V
be careful with the power supply voltage. If the power supply
voltage is more than 6V, please use XP161A1265PR, where
V
GS breakdown voltage is 12V. VST1 of XP161A1355PR is
1.2V (MAX.) and that of XP161A1265PR is 1.5V (MAX.)
22μH (CDRH5D28, SUMIDA, FOSC = 180kHz)
15μH (CDRH5D28, SUMIDA, FOSC = 300kHz)
10μH (CDRH5D28, SUMIDA, FOSC = 500kHz)
Increase capacity according to the equation below when the
step-up voltage ratio is large and output current is high.
C
L = (CL standard value)
FB11 (RFB21) and RFB12 (RFB22). The sum of RFB11 (RFB21) and RFB12 (RFB22) should normally be 1MΩ or
OUT= 0.9
V
FB1 (CFB2), speed-up capacitor for phase compensation, should be resulted fzfb=1/(2
RFB11
(kΩ)
RFB12
(kΩ)
CFB1
(pF)
VOUT
(V)
×
(RFB11+RFB12) /RFB12
×
(200k+75k) / 75k=3.3V.
RFB11
(kΩ)
RFB12
(kΩ)
CFB1
(pF)
VOUT
(V)
π×
RFB11
(kΩ)
CFB1×RFB11) equal
RFB12
(kΩ)
* NPN Transistor
2SD1628 (SANYO)
R
GS breakdown voltage of this Transistor is 8V so please
B : 500Ω
(Adjust in accordance with load & Tr.'s HFE.)
CB : 2200pF (Ceramic)
Set up according to the equation below.
C
B
≦
1/(2π× RB×Fosc×0.7)
×
(IOUT (mA) / 300mA×VOUT/VIN)
CFB1
(pF)
10/27
■TEST CIRCUITS
XC9501
Series
11/27
XC9501 Series
■TEST CIRCUITS (Continued)
12/27
R
(
■EXTERNAL COMPONENTS
Circuit 1, Circuit 2, and Circuit 3
Circuit 6 and Circuit 9
Circuit 5 and Circuit 8
■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 s eries. T he output voltage's rippl e voltage becomes
substantially high under heavy load conditions, with the XC9501 series appearing to be producing an abnorma l
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 sho wn
on the data sheets are available up to I
2. Ratings
Use the XC9501 series and peripheral components within the limits of their ratings.
N-ch MOSFET1 : XP161A1355P (TOREX)
N-ch MOSFET1 : XP161A1355P (TOREX)
L1, L2 :
47μH (CDRH5D28, SUMIDA)
22μH (CDRH5D28, SUMIDA)
15μH (CDRH5D28, SUMIDA)
10μH (CDRH5D28, SUMIDA)
: XC9501B091A
: XC9501B092A
: XC9501B093A
: XC9501B095A
SD1, SD2 : CRS02 (Schottky diode, TOSHIBA)
EC10QS06 (Schottky diode, NIHON INTER)
CL1, CL2 : 16MCE476MD2 (Tantalum, NIHON CHEMICON)
35MCE335MB2 (Tantalum, NIHON CHEMICON)
C
IN : 16MCE476MD2 (Tantalum, NIHON CHEMICON)
NPN Tr1, 2: 2SA1628 (SANYO)
CPH3215 (SANYO)
CPH3210 (SANYO)
R
FB : Please use by the conditions as below.
RFB11 + RFB12 ≦ 1MΩ
RFB21 + RFB22 ≦ 1MΩ
FB11 / RFB12 = (Setting Output Voltage / 0.9) -1
R
FB21 / RFB22 =
Setting Output Voltage / 0.9) -1
CFB : Please adjust as below:
L1, L2 :
fzfb=1/(2
fzfb=1/(2
47μH (CDRH5D28, SUMIDA)
22μH (CDRH5D28, SUMIDA)
15μH (CDRH5D28, SUMIDA)
10μH (CDRH5D28, SUMIDA)
×π×
CFB1×RFB11) = 1kHz ~50kHz ( 12kHz usual)
×π×
CFB2×RFB21) = 1kHz ~50kHz ( 12kHz usual)
: XC9501B091A
: XC9501B092A
: XC9501B093A
: XC9501B095A
SD1, SD2: MA2Q737 (Schottky diode, MATSUSHITA)
CL1, CL2 : 16MCE476MD2 (Tantalum, NIHON CHEMICON)
CIN : 16MCE476MD2 (Tantalum, NIHON CHEMICON)
L1, L2 :
22μH (CDRH5D28, SUMIDA)
SD1, SD2 : MA2Q737 (Schottky diode, MATSUSHITA)
CL1, CL2 : 16MCE476MD2 (Tantalum, NIHON CHEMICON)
C
IN : 16MCE476MD2 (Tantalum, NIHON CHEMICON)
OUT = 100 mA.
XC9501
Series
13/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
(V)
OUT1, 2
Output Voltage1, 2 V
(V)
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
1.7
PWM/PFM Switching Control
PWM Contr ol
1.6
1.5
1.4
1.3
1.2
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
3.5
PWM/PFM Switching Control
PWM Contr ol
3.4
= 1. 5V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
VIN=0.9V
1.2V
(mA)
OUT1, 2
= 3. 3V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
2.7V
FOSC=180kHz , V
2.7
PWM/PFM Switching C ontrol
PWM Control
2.6
(V)
OUT1 , 2
2.5
2.4
2.3
Output Voltage1, 2 V
2.2
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=180kHz , V
5.2
PWM/PFM Switching Control
PWM Contr ol
5.1
= 2. 5V
OUT1, 2
L=22μH(CDRH5D28), CL=94μF(Tantalum)
SD:C MS02, Tr:XP161A1355P
1.5V
VIN=0.9V
OUT1, 2
L=22μH(CDRH5D28), CL=94μF(Tantalum)
1.2V
(mA)
OUT1, 2
= 5. 0V
SD:C MS02, Tr:XP161A1355P
4.2V
OUT1, 2
3.3
3.2
3.1
Output Voltage1, 2 V
3.0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC= 1 80kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
8.2
PWM/PFM Switching C ontrol
PWM Control
8.1
(V)
OUT1, 2
8.0
7.9
7.8
Output Voltage1, 2 V
7.7
0.1 1 10 100 1000
Output Current 1, 2 I
VIN=0.9V
1.2V,1.5V
(mA)
OUT1, 2
= 8. 0V
OUT1, 2
SD:C MS02, Tr:XP161A1265P
VIN=3.3V
(mA)
OUT1, 2
4.2V
5.0V
5.0
4.9
4.8
Output Voltage1, 2 VOUT1, 2 (V)
4.7
0.1 1 10 100 1000
Output Current 1, 2 I
VIN=1.5V
OUT1, 2
2.7V
(mA)
3.3V
14/27
Dotted Arrowhead PWM/PFM Switching Control
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued)
(V)
OUT1, 2
Output Voltage1, 2 V
FOSC=300kHz , V
2.7
PWM/PFM Switching Control
PWM Contr ol
2.6
2.5
2.4
2.3
= 2. 5V
OUT1, 2
L=15μH(CDRH5D28), CL=94μF(Tantalum)
SD:C MS02, Tr:XP161A1355P
1.5V
VIN=0.9V
1.2V
(V)
OUT1, 2
Output Voltage1, 2 V
3.5
3.4
3.3
3.2
3.1
FOSC=300kHz , V
L=15μH(CDRH5D28), CL=94μF(Tantalum)
PWM/PFM Switching C ontrol
PWM Control
= 3. 3V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
VIN=0.9V
1.2V
2.2
0.1 1 10 100 1000
(mA)
OUT1, 2
= 5. 0V
SD:C MS02, Tr:XP161A1355P
3.3V
5.2
5.1
(V)
OUT1, 2
5.0
Output Current 1, 2 I
FOSC=300kHz , V
L=15μH(CDRH5D28), CL=94μF(Tantalum)
PWM/PFM Switching Control
PWM Contr ol
OUT1, 2
4.2V
3.0
0.1 1 10 100 1000
(mA)
OUT1, 2
= 2. 5V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
1.5V
2.7
2.6
(V)
OUT1, 2
2.5
Output Current 1, 2 I
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
PWM/PFM Switching C ontrol
PWM Control
4.9
4.8
Output Voltage1, 2 V
VIN=1.2V
1.5V
2.7V
2.4
2.3
Output Voltage1, 2 V
VIN =0.9V
1.2V
4.7
0.1 1 10 100 1000
(mA)
OUT1, 2
= 3. 3V
SD:C MS02, Tr:XP161A1355P
1.5V
VIN=0.9V
1.2V
3.5
3.4
(V)
OUT1, 2
3.3
3.2
Output Current 1, 2 I
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
PWM/PFM Switching Control
PWM Contr ol
OUT1, 2
2.7V
3.1
Output Voltage1, 2 V
2.2
0.1 1 10 100 1000
(mA)
OUT1, 2
= 5. 0V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
4.2V
1.2V
5.2
5.1
(V)
OUT1, 2
5.0
4.9
4.8
Output Voltage1, 2 V
Output Current 1, 2 I
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
PWM/PFM Switching C ontrol
PWM Control
VIN=0.9V
3.3V
1.5V
3.0
0.1 1 10 100 1000
Output Current 1, 2 I
OUT1, 2
(mA)
Dotted Arrowhead PWM/PFM Switching Control
4.7
0.1 1 10 100 1000
Output Current 1, 2 I
OUT1, 2
(mA)
XC9501
Series
2.7V
1.5V
2.7V
15/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current
(%)
FFI 1, 2
Efficiency1, 2 E
(%)
FFI 1, 2
Efficiency1, 2 E
(%)
FFI 1, 2
Efficiency1, 2 E
FOSC= 1 80kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
PWM/PFM Switching Control
PWM Contr ol
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
PWM/P F M Switc hin g Contro l
PWM Contr ol
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
PWM/PFM Switching Control
PWM Contr ol
1.5V
OUT1, 2=
SD:C MS02, Tr:XP161A1355P
VIN=0.9V
OUT1, 2
OUT1, 2
SD:C MS02, Tr:XP161A1355P
VIN=0.9V
OUT1, 2
OUT1, 2
SD:C MS02, Tr:XP161A1265P
VIN=3.3V
OUT1, 2
1.2V
(mA)
= 3. 3V
1.2V
(mA)
= 8. 0V
4.2V
(mA)
2.7V
1.5V
5.0V
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
80
(%)
60
FFI 1, 2
40
Efficiency1, 2 E
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
PWM/PFM Switching Control
PWM Contr ol
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
80
(%)
60
FFI 1, 2
40
Efficiency1, 2 E
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
PWM/PFM Switching Control
PWM Contr ol
= 2. 5V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
1.2VVIN=0.9V
(mA)
OUT1, 2
= 5. 0V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
3.3V
2.7V
VIN=1.5V
(mA)
OUT1, 2
1.5V
4.2V
16/27
Dotted Arrowhead PWM/PFM Switching Control
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current (Continued)
FOSC=300kHz , V
100
= 2. 5V
OUT1, 2
L=15μH(CDRH5D28), CL=94μF(Tantalum)
SD:C MS02, Tr:XP161A1355P
80
(%)
60
FFI 1, 2
40
Efficiency1, 2 E
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=300kHz , V
L=15μH(CDRH5D28), CL=94μF(Tantalum)
100
VIN=0.9V
PWM/PFM Switching Control
PWM Contr ol
OUT1, 2
SD:C MS02, Tr:XP161A1355P
OUT1, 2
1.2V
(mA)
= 5. 0V
1.5V
(%)
FFI 1, 2
Efficiency1, 2 E
80
(%)
60
FFI 1, 2
40
Efficiency1, 2 E
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Contr ol
80
(%)
60
FFI 1, 2
40
Efficiency1, 2 E
20
VIN=1.2V
1.5V
PWM/PFM Switching C ontrol
PWM Control
(mA)
OUT1, 2
= 3. 3V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
VIN=0.9
1.2V
2.7V
3.3V
2.7V
1.5V
4.2V
(%)
FFI 1, 2
Efficiency1, 2 E
(%)
FFI 1, 2
Efficiency1, 2 E
0
0.1 1 10 100 1000
Output Current 1, 2 I
OUT1, 2
(mA)
FOSC=300kHz , V
L=15μH(CDRH5D28), CL=94μF(Tantalum)
100
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
PWM/PFM Switching Control
PWM Contr ol
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Contr ol
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
4.2V
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
PWM/PFM Switching C ontrol
PWM Control
= 3. 3V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
2.7V
1.2V
VIN=0.9V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
OUT1, 2
SD:C MS02, Tr:XP161A1355P
VIN =0.9V
OUT1, 2
= 2. 5V
VIN=0.9V
OUT1, 2
= 5. 0V
1.2V
OUT1, 2
1.5V
(mA)
1.2V
(mA)
1.5V
(mA)
Dotted Arrowhead
PWM/PFM Switching Control
XC9501
Series
1.5V
3.3V
2.7V
17/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Contr ol
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Contr ol
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching C ontrol
PWM Control
80
60
40
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
= 1. 5V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
1.2V
VIN=0.9V
(mA)
OUT1, 2
= 3. 3V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
1.5V
VIN=0.9V
2.7V
(mA)
OUT1, 2
= 8. 0V
OUT1, 2
SD:C MS02, Tr:XP161A1265P
4.2V
VIN=3.3V
(mA)
OUT1, 2
1.2
Dotted Arrowhead PWM/PFM Switching Control
5.0V
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Contr ol
80
VIN=0.9V
1.2V
1.5V
60
40
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=180kHz , V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Contr ol
80
60
40
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
= 2. 5V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
(mA)
OUT1, 2
= 5. 0V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
VIN=1.5V
(mA)
OUT1, 2
4.2V
2.7V
3.3V
18/27
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued)
Ripple Voltage1, 2 (mV)
FOSC=300kHz, V
100
PWM/P F M Switc hin g Contro l
PWM Contr ol
80
60
40
20
= 2.5V
L=15μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP161A1355P
1.5V
1.2
VIN=0.9V
Ripple Voltage1, 2 (mV)
0
0.1 1 10 100 1000
100
80
60
40
Ripple Voltage1, 2 (mV)
20
Output Current 1, 2 I
FOSC=300kHz , V
L=15μH(CDRH5D28), CL=94μF(Tantalum)
PWM/P F M Switching Control
PWM Control
OUT1, 2
VIN =1.2V
(mA)
OUT1, 2
= 5. 0V
SD:C MS02, Tr:XP161A1355P
3.3V
2.7V
1.5V
4.2V
Ripple Voltage1, 2 (mV)
FOSC=300kHz , V
L=15μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching C ontrol
PWM Control
80
60
40
2.7V
20
0
0.1 1 10 100 1000
Output Current 1, 2 I
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/P F M Switching Control
PWM Control
80
60
40
20
= 3. 3V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
1.5V
1.2V
VIN=0.9V
(mA)
OUT1, 2
= 2. 5V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
1.2V
VIN=0.9V
0
0.1 1 10 100 1000
(mA)
OUT1, 2
= 3. 3V
SD:C MS02, Tr:XP161A1355P
1.2V
100
80
60
40
Ripple Voltage1, 2 (mV)
20
Output Current 1, 2 I
FOSC=500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
PWM/PFM Switching Control
PWM Contr ol
OUT1, 2
VIN=0.9V
2.7V
1.5V
0
0.1 1 10 100 1000
100
80
60
40
Ripple Voltage1, 2 (mV)
20
Output Current 1, 2 I
FOSC= 500kHz , V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
PWM/PFM Switching Control
PWM Contr ol
Vin=0.9V
(mA)
OUT1, 2
= 5. 0V
OUT1, 2
SD:C MS02, Tr:XP161A1355P
2.7V
1.5V
1.2V
0
0.1 1 10 100 1000
Output Current 1, 2 I
OUT1, 2
(mA)
0
0.1 1 10 100 1000
Output Current 1, 2 I
OUT1, 2
(mA)
XC9501
Series
1.5V
4.2V
3.3V
19/27
C
C
C
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) Supply Current vs. Supply Voltage (5) Supply Current 1-1 vs. Supply Voltage
XC 9501B092 (180kH z )
500
)
A
(μ
Supply Current 1 IDD1
Topr=85
400
300
200
100
0
0246810
℃
25
℃
- 40
℃
Supply Voltage VDD (V)
400
A)
μ
300
200
100
Supply Current 1-1 IDD1-1 (
(6) Supply Current 1-2 vs. Supply Voltage (7) Supply Current 2 vs. Supply Voltage
400
)
A
300
(μ
XC 9501B092 (180kHz)
Topr=85
℃
25
℃
- 40
℃
400
)
A
300
(μ
200
200
100
Supply Current1-2 IDD1-2
0
0246810
Supply Voltage VDD (V)
100
Supply Current 2 IDD2
0
(8) Stand-by Current vs. Supply Voltage (9) Oscillation Frequency vs. Supply Voltage
XC9501B092 ( 180kHz)
)
A
A)
μ
(μ
10
10
8
8
6
6
4
4
2
2
Stand-by Current ISTB (
Stand-by Current ISTB
0
0
XC9501B092 ( 180kHz)
Topr=85
Topr=85
℃
℃
25
25
℃
℃
- 40
- 40
℃
℃
0246810
0246810
Supply Voltage VDD (V)
Supply Voltage VDD (V)
210
)
kHz
200
(
190
180
170
160
Oscillation Frequency Fosc
150
XC 9501B092 (180kH z )
o
Topr=85
o
25
o
- 40
0
0246810
Supply Voltage VDD (V)
XC 9501B092 (180kHz)
Topr=85
℃
25
℃
- 40
℃
0246810
Supply Voltage VDD (V)
XC 9501B092 (180kHz)
Topr=25
℃
85
℃
- 40
℃
0246810
Supply Voltage VDD (V)
20/27
C
C
C
)
XC9501
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(10) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage (11) EN1, 2 'H' 'L' Voltage vs. Supply Voltage
0.8
XC 9501B092 (180kHz)
0.8
0.6
0.4
(V)
0.2
PWM1, 2 'H' ' L' Voltage Vpwm1, 2
0
0246810
- 40
℃
Topr=25
℃
Supply Voltage VDD (V)
85
℃
0.6
0.4
0.2
EN1, 2 'H' ' L' Voltage VEN1, 2 (V)
0
(12) Maximum Duty Ratio1, 2 vs. Supply Voltage (13) Soft-start Time1, 2 vs. Supply Voltage
90
)
%
(
85
80
XC 9501B092 (180kHz)
o
Topr=85
o
25
o
- 40
25
20
15
75
70
Max Duty Ratio 1, 2 Maxdty1, 2
65
0246810
Supply Voltage VDD (V)
10
5
Softstart Time1, 2 TSS (msec
0
(14) EXT1, 2 High ON Resistance vs. Supply Voltage (15) EXT1, 2 Low ON Resistance vs. Supply Voltage
50
40
(Ω)
30
20
10
EXT1, 2 H ON Resistance
0
0246810
XC 9501B092 (180kHz)
Topr=85
Supply Voltage VDD (V)
- 40
50
℃
25
℃
℃
40
(Ω)
30
20
10
EXT1, 2 L ON Resistance
XC 9501B092 (180kHz)
- 40
℃
85
Topr=25
0246810
Supply Voltage VDD (V)
℃
℃
XC 9501B092 (180kHz)
0246810
Supply Voltage VDD (V)
XC 9501B092 (180kHz)
Topr=85
℃
25
℃
- 40
℃
0
0246810
Supply Voltage VDD (V)
21/27
2
)
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Operation Start Voltage vs. Ambient Temperature (17) Operation Retention Voltage vs. Ambient Temperature
(18) Oscillation Start Voltage vs. Ambient Temperature (19) PFM Duty Ratio 1, 2 vs. Supply Voltage
(20) Output Voltage vs. Ambient Temperature
XC 9501B092 (180kHz,V OUT= 3.3V)
1.2
1
0.8
0.6
VST1 (V)
0.4
0.2
Operation Start-Up Voltage
0
XC9501B092(180kHz,VOUT=2.0V)
1
0.8
0.6
0.4
VST2 (V)
0.2
Oscillation Start-Up Voltage
0
3.5
)
V
3.4
(
3.3
3.2
3.1
Output Voltage VOUT
3.0
L=22μH(CDRH5D28 ), CL=4 7μF(Tantalum)
-40-20020406080100
Ambient Temperature Ta (℃)
-40 -20 0 20 40 60 80 100
Ambient Temperature Ta (℃)
XC9501B093(300kHz)
L=22μH(CDRH5D28), CL=94μF(Tantal um)
-50 -20 10 40 70 100
Ambient Temperature Ta (℃)
SD:MA2Q737, Tr:2SD1628G
IOUT=1mA
Tr:XP161A1265P, SD:CMS0
VIN=1.8V
IOUT=200mA
XC9501B092(180kHz,VOUT=3.3V)
L=22μH(CDRH5D28), CL =47μF(Tantalum)
0.8
0.6
)
V
(
0.4
VHLD
0.2
Operation Retention Voltage
0
-40 -20 0 20 40 60 80 100
SD:MA2Q737, Tr:2SD1628G
IOUT=1mA
Ambient Temperature Ta (℃)
XC 9501B092 (180kHz)
40
Topr=85
℃
25
35
30
25
PFM Duty Ratio 1, 2 (%
PFM Duty Ratio 1, 2(%)
20
0246810
℃
- 40
℃
Supply Voltage VDD (V)
22/27
■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
XC9501
Series
23/27
XC9501 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Load Transient Response (Continued)
< VOUT1, 2 = 3.3V, VIN = 2.0V, IOUT1, 2 =10mA 100mA >
● PWM Control
● PWM/PFM Switching Control
24/27
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Load Transient Response (Continued)
< PWM Controlled PWM / PFM Switching Cont rolled >
● Soft-Start Wave Form
*CH1: EN2=GND when measurement
CH2: EN1=GND when measurement
XC9501
Series
25/27
(
(
XC9501 Series
■PACKAGING INFORMATION
●MSOP-10
■ MARKING RULE
●MSOP-10, USP-10
26/27
8
7 6910
① ② ③
3
4 521
MSOP-10
TOP VIEW)
USP-10
TOP VIEW)
① represents product series
② represents type of DC/DC Controller
⑥⑤④
③, ④ represents FB voltage
⑤ represents oscillation frequency
⑥ represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excluded)
Note: No character inversion used
●USP-10
←
13mm
→
MARK PRODUCT SERIES
2 XC9501B09xxx
MARK PRODUCT SERIES
B XC9501B09xxx
MARK
VOLTAGE (V) PRODUCT SERIES
③ ④
0 9 0.9 XC9501B09xxx
MARK OSCILLATION FREQUENCY (kHz) PRODUCT SERIES
1 100 XC9501B091xx
2 180 XC9501B092xx
3 300 XC9501B093xx
5 500 XC9501B095xx
XC9501
Series
1. The product s and product specifications cont ained herein are subje ct to change without
notice to improve performance characteristics. Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
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 datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet 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.
o low at
e, the Lx pin
may not
ll.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this datasheet 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 datasheet may be copied or reproduced without the
prior permission of TOREX SEMICONDUCTOR LTD.
27/27
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