■
■
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XC9503 Series
ETR0703_003
2ch.Step-Down DC/DC Controller ICs
GENERAL DESCRIPTION
XC9503 series are PWM controlled, PWM/PFM automatic switching controlled, multi-functiona l, 2 channel step-down DC/DC
controller ICs. Since the series has a built-in 0.9V reference voltage (accuracy ±2%), 0.9V to 6.0V can be set using external
components.
With a 300kHz frequency, the size of the external components can be reduced. Switching frequencies of 180kHz & 500kHz
are also available as custom-designed products.
The control of the XC9503 series can be switched bet ween PWM control and PWM/PFM automatic switching control usi ng
external signals. Control switches from PWM to PFM during light loads when automatic switching is selected and the series is
highly efficient from light loads through to large output currents. Noise is easily reduced with PWM control since the frequency
is fixed. The series gives freedom to select control suited to the application.
Soft-start time is internally set to 10msec and offers protection against in-rush currents when the power is switched on and
also protects against voltage overshoot.
■APPLICATIONS
●PDAs
●Palmtop computers
●Digital cameras
●Various multi function power supplies
FEATURES
2 ch DC/DC Controller (Step-Down & Down)
Input Voltage Range : 2.0V ~ 10V
Power Supply Voltage Range : 2.0V ~ 10V
Output Voltage Range : 0.9V ~ 6.0V (set by FB pins)
Oscillation Frequency : 300kHz (±15%)
Maximum Duty Cycle : 100%
Control Method : PWM or PWM/PFM Selectable
Output Current : More than 1000mA
High Efficiency : 92% (TPY.)
Stand-By Function : 3.0μA (MAX.)
Soft-Start Time : 10 ms (internally set)
Packages : MSOP-10, USP-10
Environmentally Friendly : EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUIT
<XC9503B093A VOUT①: 3.3V, VOUT②: 1.8V >
■TYPICAL PERFORMANCE
CHARACTERISTICS
●Efficiency vs. Output Current
☆GreenOperation Compatible
(180kHz, 500kHz custom)
(V
IN=5.0V, VOUT=3.3V)
1/32
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XC9503 Series
PIN CONFIGURATION
PIN ASSIGNMENT
PIN NUMBER PIN NAME FUNCTIONS
MSOP-10
(TOP VIEW)
USP-10
(BOTTOM VIEW)
1 EXT 1 Channel 1: External Transistor Drive Pin <Connected to P-ch Power MOSFET Gate>
2 VDD Supply Voltage
3 FB1
4 PWM1
5 EN1
6 EN2
7 PWM2
8 FB2
9 GND Ground
10 EXT2 Channel 2: External Transistor Drive Pin <Connected to P-ch Power MOSFET Gate>
PRODUCT CLASSIFICATION
●Ordering Information
XC9503①②③④⑤⑥‑⑦
Channel 1: Output Voltage Monitor Feedback Pin <Threshold value: 0.9V. Output voltage
can be set freely by connecting split resistors between V
Channel 1: PWM/PFM Switching Pin <Control Output 1. PWM control when connected to
VDD, PWM / PFM auto switching when connected to Ground. >
Channel 1: Enable Pin <Connected to Ground when Output 1 is in stand-by mode.
Connected to VDD when Output 1 is active. EXT1 is high when in stand-by mode.>
Channel 2: Enable Pin <Connected to Ground when Output 2 is in stand-by mode.
Connected to VDD when Output 2 is active. EXT2/ is high when in stand-by mode.>
Channel 2: PWM/PFM Switching Pin <Control Output 2. P WM control when connected to
VDD, PWM / PFM auto switching when connected to Ground.>
Channel 2: Output Voltage Monitor Feedback Pin <Threshold value: 0.9V. Output voltage
can be set freely by connecting split resistors between V
(*1)
OUT1 and Ground.>
OUT2 and Ground.>
DESIGNATOR ITEM SYMBOL DESCRIPTION
①
②③
④
⑤⑥-⑦
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
(*1)
Type of DC/DC Controller B Standard type (10 Pin)
Output Voltage 09
2 180kHz (custom)
Oscillation Frequency
Packages (Order Unit)
3 300kHz
5 500kHz (custom)
AR MSOP-10 (1,000/Reel)
AR-G MSOP-10 (1,000/Reel)
DR USP-10 (3,000/Reel)
DR-G USP-10 (3,000/Reel)
FB products→②=0, ③=9 fixed
2/32
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A
BLOCK DIAGRAM
BSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNITS
XC9503
Series
Ta=25℃
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
MSOP-10 150
Power Dissipation
Pd
USP-10
Operating Temperature Range Topr - 40 ~ + 85
Storage Temperature Range
Tstg - 55 ~ + 125
Note: Voltage is all ground standardized.
150
mW
℃
℃
3/32
XC9503 Series
XC9503B092A
Common Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Supply Voltage VDD 2.0 - 10.0 V ①
Maximum Input Voltage VIN 10.0 - - V ①
Output Voltage Range (* 1) VOUTSET VIN≧2.0V, IOUT1, 2=1mA
Supply Current 1 IDD1 FB1, 2=0V - 60 120 μA ②
Supply Current 1-1 IDD1-1
Supply Current 1-2 IDD1-2
Supply Current 2 IDD2 FB1, 2=1.0V - 60 140 μA ②
Stand-by Current ISTB Same as IDD1, EN1=EN2=0V - 1.0 3.0 μA ②
Switching Frequency FOSC Same as IDD1 153 180 207 kHz ②
EN1, 2 "High" Voltage VENH FB1, 2=0V 0.65 - - V ②
EN1, 2 "Low" Voltage VENL FB1, 2=0V - - 0.20 V ②
EN1, 2 "High" Current IENH EN1, 2=3.0V - - 0.50 μA ②
EN1, 2 "Low" Current IENL EN1, 2=0V, FB1, 2=3.0V - - -0.50 μA ②
PWM1, 2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V - - 0.50 μA ②
PWM1, 2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V - - -0.50 μA ②
FB1, 2 "High" Current IFBH FB1, 2=3.0V - - 0.50 μA ②
FB1, 2 "Low" Current VFBL FB1, 2=1.0V - - -0.50 μA ②
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB1 Voltage
Minimum Operation Voltage
Maximum Duty Ratio 1
Minimum Duty Ratio1 MINDTY1 Same as IDD2 - - 0 %
PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 38 %
Efficiency1 (* 4) EFFI1
Soft-Start Time1 TSS1
EXT1 "High" ON Resistance REXTBH1 EN1=0, EXT1=VDD-0.4V - 28 47
EXT1 "Low" ON Resistance REXTBL1 FB2=0V, EXT1=0.4V - 22 30
PWM1 "High" Voltage
PWM1 "Low" Voltage
Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V
FB1 VIN=3.0V, IOUT1=10mA 0.882 0.900 0.918 V
V
VINmin1
MAXDTY1 Same as IDD1 100 - - %
PWMH1 No Load 0.65 - - V
V
PWML1 No Load - - 0.20 V
V
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
FB1=1.0V, FB2=0V
Step-Down Controller
OUT1=250mA
I
P-ch MOSFET: XP162A12A6P
V
OUT1×0.95V, EN1=0V→0.65V
VOUT1 0.9 - 10.0 V
OUT2 0.9 - 10.0 V
V
- 50 110 μA ②
- 60 130 μA ②
- - 2.0 V ①
- 92 - % ④
5.0 10.0 20.0 ms
Output 2 Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB2 Voltage VFB2 VIN=3.0V, IOUT2=10mA 0.882 0.900 0.918 V
Minimum Operating Voltage VINmin2 - - 2.0 V
Maximum Duty Ratio 2 MAXDTY2 Same as IDD1 100 - - %
Minimum Duty Ratio 2 MINDTY2 Same as IDD2 - - 0 %
PFM Duty Ratio 2 PFMDTY2 No Load, VPWM2=0V 22 30 38 %
Efficiency 1 (* 2) EFFI2
Soft-Start Time 1 TSS2
EXT1 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V - 28 47
EXT1 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V - 22 30
PWM 2 "High" Voltage VPWMH2 No Load 0.65 - - V ⑦
PWM 2 "Low" Voltage
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
NOTE:
*1: Please be careful not to exceed the breakdown voltage level of the peripheral parts.
*2: EFFI={ [ (output voltage) × (output current) ] / [ (input voltage)
PWML2
V
Step-Down Controller
OUT2=250mA
I
P-ch MOSFET: XP162A12A6P
V
OUT2×0.95V, EN2=0V→0.65V
No Load - - 0.20 V
- 92 - % ⑦
5.0 10.0 20.0 ms
× (input current) ] } × 100
Ta=25℃
①
③
②
②
④
④
Ω ⑤
Ω ⑤
④
④
⑥
①
②
②
⑦
⑦
Ω ⑤
Ω ⑤
⑦
4/32
■
XC9503
Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9503B093A
Common Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Supply Voltage VDD 2.0 - 10.0 V ①
Maximum Input Voltage VIN 10.0 - - V ①
V
Output Voltage Range (* 1) VOUTSET
Supply Current 1 IDD1
Supply Current 1-1 IDD1-1
Supply Current 1-2 IDD1-2
Supply Current 2 IDD2
Stand-by Current ISTB
Switching Frequency FOSC
EN1, 2 "High" Voltage VENH
EN1, 2 "Low" Voltage VENL
EN1, 2 "High" Current IENH
EN1, 2 "Low" Current IENL
PWM1, 2 "High" Current IPWMH
PWM1, 2 "Low" Current IPWML
FB1, 2 "High" Current IFBH
FB1, 2 "Low" Current
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB 1 Voltage
Minimum Operating Voltage
Maximum Duty Ratio 1
Minimum Duty Ratio 1 MINDTY1 Same as IDD2 - - 0 %
PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 38 %
Efficiency1 (* 4) EFFI1
Soft-Start Time 1 TSS1
EXT1 "High" ON Resistance REXTBH1 EN1=0, EXT1=VDD-0.4V - 28 47
EXT1 "Low" ON Resistance REXTBL1 FB2=0V, EXT1=0.4V - 22 30
PWM1 "High" Voltage
PWM1 "Low" Voltage
Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V
Output 2 Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB 2 Voltage VFB2 VIN=3.0V, IOUT2=10mA 0.882 0.900 0.918 V ⑥
Minimum Operating Voltage VINmin2 - - 2.0
Maximum Duty Ratio 2 MAXDTY2 Same as IDD1 100 - -
Minimum Duty Ratio 2 MINDTY2 Same as IDD2 - - 0
PFM Duty Ratio 2 PFMDTY2 No Load, VPWM2=0V 22 30 38
Efficiency 1 (* 2) EFFI2
Soft-Start Time 1 TSS2 VOUT2×0.95V, EN2=0V→0.65V 5.0 10.0 20.0
EXT1 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V - 28 47 Ω ⑤
EXT1 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V - 22 30 Ω ⑤
PWM2 "High" Voltage VPWMH2 No Load 0.65 - - V ⑦
PWM2 "Low" Voltage
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
NOTE:
*1: Please be careful not to exceed the breakdown voltage level of the peripheral parts.
*2: EFFI={ [ (output voltage) × (output current) ] / [ (input voltage) × (input current) ] } × 100
FBL
V
FB1 VIN=3.0V IOUT1=10mA 0.882 0.900 0.918 V
V
VINmin1
MAXDTY1 Same as IDD1 100 - - %
PWMH1 No Load 0.65 - - V
V
PWML1 No Load - - 0.20 V
V
PWML2
V
IN≧2.0V, IOUT1, 2=1mA
FB1, 2=0V
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
FB1=1.0V, FB2=0V
FB1, 2=1.0V
Same as I
Same as I
FB1, 2=0V
FB1, 2=0V
EN1, 2=3.0V
EN1, 2=0V, FB1, 2=3.0V
FB1, 2=3.0V, PWM=3.0V
FB1, 2=3.0V, PWM=0V
FB1, 2=3.0V
FB1, 2=1.0V
DD1, EN1=EN2=0V
DD1
Step-Down Controller
OUT1=250mA
I
P-ch MOSFET: XP162A12A6P
V
OUT1×0.95V, EN1=0V→0.65V
Step-Down Controller
OUT2=250mA
I
P-ch MOSFET: XP162A12A6P
No Load - - 0.20
VOUT1 0.9 - 10.0 V
OUT2 0.9 - 10.0 V
V
- 70 140 μA ②
- 60 120 μA ②
- 70 150 μA ②
- 80 150 μA ②
- 1.0 3.0 μA ②
255 300 345 kHz ②
0.65 - - V ②
- - 0.20 V ②
- - 0.50 μA ②
- - -0.50 μA ②
- - 0.50 μA ②
- - -0.50 μA ②
- - 0.50 μA ②
- - -0.50 μA ②
- - 2.0 V ①
- 92 - % ④
5.0 10.0 20.0 ms
- 92 - % ⑦
Ta=25℃
Ω ⑤
Ω ⑤
V
%
%
%
ms
V
①
③
②
②
④
④
④
④
①
②
②
⑦
⑦
⑦
5/32
■
XC9503 Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9503B095A
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Supply Voltage VDD 2.0 - 10.0 V ①
Maximum Input Voltage VIN 10.0 - - V ①
Output Voltage Range (* 1) VOUTSET
Supply Current 1 IDD1
Supply Current 1-1 IDD1-1
Supply Current 1-2 IDD1-2
Supply Current 2 IDD2
Stand-by Current ISTB
Switching Frequency FOSC
EN1, 2 "High" Voltage VENH
EN1, 2 "Low" Voltage VENL
EN1, 2 "High" Current IENH
EN1, 2 "Low" Current IENL
PWM1, 2 "High" Current IPWMH
PWM1, 2 "Low" Current IPWML
FB1, 2 "High" Current IFBH
FB1, 2 "Low" Current
Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V
Output 1 Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB 1 Voltage
Minimum Operation Voltage
Maximum Duty Ratio 1
Minimum Duty Ratio 1 MINDTY1 Same as IDD2 - - 0 %
PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 38 %
Efficiency1 (* 4) EFFI1
Soft-Start Time 1 TSS1
EXT1 "High" ON Resistance REXTBH1 EN1=0, EXT1=VDD-0.4V - 28 47
EXT1 "Low" ON Resistance REXTBL1 FB2=0V, EXT1=0.4V - 22 30
PWM1 "High" Voltage
PWM1 "Low" Voltage
Unless otherwise stated, VDD=EN1=PWM1=3.0V, PWM2=EN2=GND, EXT2=OPEN, FB2=OPEN, VIN=5.0V
Output 2 Characteristics
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
FB 2 Voltage VFB2 VIN=3.0V, IOUT2=10mA 0.882 0.900 0.918 V ⑥
Minimum Operation Voltage VINmin2 - - 2.0 V ①
Maximum Duty Ratio 2 MAXDTY2 Same as IDD1 100 - - % ②
Minimum Duty Ratio 2 MINDTY2 Same as IDD2 - - 0 % ②
PFM Duty Ratio 2 PFMDTY2 No Load, VPWM2=0V 22 30 38 % ⑦
Efficiency 1 (* 2) EFFI2
Soft-Start Time 1 TSS2 VOUT2×0.95V, EN2=0V→0.65V 5.0 10.0 20.0 ms ⑦
EXT1 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V - 28 47 Ω ⑤
EXT1 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V - 22 30 Ω ⑤
PWM2 "High" Voltage VPWMH2 No Load 0.65 - - V ⑦
PWM2 "Low" Voltage
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
NOTE:
*1 : Please be careful not to exceed the breakdown voltage level of the peripheral parts.
*2 : EFFI={ [ (output voltage) × (output current) ] / [ input voltage] × (input current) ] } × 100
Common Characteristics
V
IN≧2.0V, IOUT1, 2=1mA
FB1, 2=0V
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=0V
FB1=0V, FB2=1.0V
FB1=1.0V, FB2=0V
FB1, 2=1.0V
Same as I
Same as I
FB1, 2=0V
FB1, 2=0V
EN1, 2=3.0V
EN1, 2=0V, FB1, 2=3.0V
FB1, 2=3.0V, PWM=3.0V
FB1, 2=3.0V, PWM=0V
FB1, 2=3.0V
FBL
V
FB1, 2=1.0V
Step-Down Controller
FB1 VIN=3.0V, IOUT1=10mA 0.882 0.900 0.918 V
V
VINmin1
MAXDTY1 Same as IDD1 100 - - %
PWMH1 No Load 0.65 - - V
V
PWML1 No Load - - 0.20 V
V
OUT1=250mA
I
P-ch MOSFET: XP162A12A6P
V
OUT1×0.95V, EN1=0V→0.65V
Step-Down Controller
OUT2=250mA
I
P-ch MOSFET: XP162A12A6P
PWML2
V
No Load - - 0.20 V ⑦
DD1, EN1=EN2=0V
DD1
VOUT1 0.9 - 10.0 V
OUT2 0.9 - 10.0 V
V
- 90 170 μA ②
- 80 150 μA ②
- 100 180 μA ②
- 100 190 μA ②
- 1.0 3.0 μA ②
425 500 575 kHz ②
0.65 - - V ②
- - 0.20 V ②
- - 0.50 μA ②
- - -0.50 μA ②
- - 0.50 μA ②
- - -0.50 μA ②
- - 0.50 μA ②
- - -0.50 μA ②
- - 2.0 V ①
- 91 - % ④
5.0 10.0 20.0 ms
- 91 - % ⑦
Ta=25℃
①
③
②
②
④
④
Ω ⑤
Ω ⑤
④
④
6/32
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XC9503
Series
OPERATIONAL EXPLANATION
The XC9503 series are multi-functional, 2 channel step-down 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 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 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 loa d. 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 applicatio ns, for example, where traditionall y,
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 adjuste d and fixe d by laser trimming (for output voltage settings, pl ease
refer to 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, ho wever, 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.
<Chip 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 chip disable, the channel's operations will stop and the EXT pins will be kept at a high level (the ext ernal P-ch
MOSFET will be OFF). When both EN1 and EN2 are in a state of chip 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 chip enable and op erations will recommence.
With soft-start, 95% of the set output voltage will be reached within 10mS (TYP.) from the moment of chip enable.
7/32
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)
XC9503 Series
OPERATIONAL EXPLANATION (Continued
<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 1MΩor
less.
The value of C
equal to 12kHz. Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and
value of load capacity (C
[Example of Calculation]
When R
[Typical Example]
FB11=200k
VOUT
(V)
FB1 (CFB2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2
L).
Ω
and RFB12=75kΩ, VOUT1=0.9×(200k+75k) / 75k=3.3V.
RFB11
(kΩ)
1.0 30 270 430 2.5 390 220 33
1.5 220 330 62 2.7 360 180 33
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
The same method can be adopted for channel two also.
[External Components]
Tr : * MOSFET
SD :
L :
CL1 :
Tr :
R
CB :
The same components can be adopted for both channel 1 and channel 2.
XP162A12A6P
Note: V
please be careful with the power supply voltage.
MA2Q737 (Schottky, MATSUSHITA)
CMS02 (Schottky, TOSHIBA)
10μH
22μH (CDRH5D28, SUMIDA, FOSC = 300kHz)
22μH (CDRH5D28, SUMIDA, FOSC = 180kHz)
16V, 47μF (Tantalum)
Increase capacity according to the equation below when the step-up
voltage ratio is large and output current is high.
C=(C
L standard value)
* PNP MOSFET
2SA1213 (SANYO)
B :
500Ω ( Adjust in accordance with load & Tr.'s HFE.)
Set according to the equation below.
B ≦ (VIN-0.7) × hFE / IC-REXTBH
R
2200pF (Ceramic)
Set according to the equation below.
C
B1
≦
(2π× RB × FOSC × 0.7)
(P-ch Power MOSFET, TOREX)
GS breakdown voltage of this Tr. is 12V so
(CDRH5D28, SUMIDA, FOSC = 500kHz)
×
RFB12
(kΩ)
OUT=0.9
V
×
(RFB11+RFB12) /RFB12
CFB1
(pF)
(IOUT (mA) / 500mA×VOUT / VIN
VOUT
(V)
RFB11
(kΩ)
×π×
CFB1×RFB11) which is
RFB12
(kΩ)
CFB1
(pF)
8/32
■
TEST CIRCUITS
Circuit 1
Circuit ①
V OUT1
RFB11
CFB1 CFB2
CL1
RL1
RFB12
PNP
L1
Tr1
2200pF
510Ω
SBD1
1μF
V I
N
1 EXT1 EX T2 10
2 VDD
3 FB1 FB2 8
4 PW M 1 PWM 2 7
5 EN1 EN 2 6
GND 9
PNP
Tr2
2200pF
C
IN
SBD2
L2
R
RFB22
V OUT2
FB21
CL2
RL2
510Ω
Circuit 2
Circuit ② Circuit ⑥
EXT2 10
A
OSC
1μF
A
A
V
V
FB1
VPWM1 V EN1
DD
1 EXT1
2 VDD
3 FB1 FB2 8
4 PWM 1 PWM 2 7
A
5 EN1 EN2 6
GND 9
A
A
V PWM2
VEN2
OS C
A
VFB2
Circuit 3
VOU T 1
L1
A
V
CL1
RL
Pch
MOSFET1
SBD1
1 EXT1 EXT2 10
2 VDD
GN D 9
3 FB1 FB 2 8
4 PW M 1 PW M 2 7
5 EN1 EN2 6
A
V IN
CIN
CIN
Circuit 4
Circuit ④
A
CL1
V
RL
VOUT1
200 k Ω
75k Ω
L1
62pF
Pch
MOSFET1
SBD1
1 EXT1 EXT2 10
2 VDD
GN D 9
3 FB1 FB2 8
4 PWM1 PWM2 7
5 EN1 EN2 6
A
VIN
CIN
Circuit 5
Circuit ⑤
A
1μ F
EXT1
V
Circuit 6
A
V IN
Circuit 7
Circuit ⑦ Circuit ③
A
VIN
V
DD
FB1
V
1 EXT1 EXT2 10
2 VDD
3 FB1 FB2 8
4 PWM1 PWM2 7
5 EN1 EN2 6
1 EXT1 EXT2 10
2 VDD
3 FB1 FB2 8
4 PW M 1 PWM 2 7
5 EN1 EN2 6
V PWM 1
V EN1
GND 9
GND 9
1 EXT1 EXT2 10
GN D 9
2 VDD
3 FB1 FB 2 8
4 PWM1 PWM2 7
5 EN1EN2 6
VEN2
Pch
MOSFET2
SBD2
Pch
MOSFET2
SB D2
62pF
V PWM2
L2
L2
XC9503
Series
C
IN
VEXT2
V FB2
VOUT2
A
CL2
L
R
VOUT2
A
20 0 k Ω
CL2
L
R
75 k Ω
A
V
V
9/32
■
XC9503 Series
EXTERNAL COMPONENTS USED FOR TEST CIRCUITS
Circuit ①
SD1, SD2: CRS02 (Schottk y diode, TOSHIBA)
EC10QS06 (Schottky diode, NIHON INTER)
CL1, CL2: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
CIN: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
PNP Tr1: 2SA1213 (TOSHIBA)
RFB: Please use by the conditions as below:
CFB: Please adjust as below:
Circuit ③
SD1: MA2Q737 (Schottky diode, MATSUSHITA)
CL1: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
CIN: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
P-ch MOSFET1: XP162A12A6P (TOREX)
Circuit ④
SD1: MA2Q737 (Schottky diode, MATSUSHITA)
CL1: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
CIN: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
P-ch MOSFET1: XP162A12A6P (TOREX)
Circuit ⑥
SD1: MA2Q737 (Schottky diode, MATSUSHITA)
CL1: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
CIN: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
P-ch MOSFET2: XP162A12A6P (TOREX)
Circuit ⑦
SD2: MA2Q737 (Schottky diode, MATSUSHITA)
CL2: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
CIN: 16MCE476MD2 (Tantalum, NIHON CHEMICON)
P-ch MOSFET2: XP162A12A6P (TOREX)
L1, L2:
L1:
L1:
L1:
L2:
22μH (CDRH5D28, SUMIDA)
15μH (CDRH5D28, SUMIDA)
10μH (CDRH5D28, SUMIDA)
FB11 + RFB12 < 1M
R
FB21 + RFB22 < 1M
R
FB11 / RFB12 = (Setting output voltage / 0.9) - 1
R
OUT2= (0.9 – VOUT1) x (RFB21/RFB22) + 0.9V
V
fxfb=1/(2 x π x CFB1 x RFB11) = 1kHz ~ 50kHz (12kHz usual)
fxfb=1/(2 x π x CFB2 x RFB21) = 1kHz ~ 50kHz (12kHz usual)
22μH (CDRH5D28, SUMIDA)
22μH (CDRH5D28, SUMIDA)
15μH (CDRH5D28, SUMIDA)
10μH (CDRH5D28, SUMIDA)
22μH (CDRH5D28, SUMIDA)
22μH (CDRH5D28, SUMIDA)
15μH (CDRH5D28, SUMIDA)
10μH (CDRH5D28, SUMIDA)
Ω
Ω
: XC9503B092A
: XC9503B093A
: XC9503B095A
: XC9503B092A
: XC9503B093A
: XC9503B095A
: XC9503B092A
: XC9503B093A
: XC9503B095A
10/32
XC9503
1. Checking for Intermittent Oscillation
The XC9503 series is subject to intermittent oscillation in t he proximity of the maximum duty if the step-do wn ratio is low
(e.g., from 4.2 V to 3.3 V) or a heavy load is applied where the dut y ratio becomes hi gh. Check waveforms at EXT under
your operating conditions. A remedy for this problem is to raise the inductance of coil L or increase the load capacitance
L.
C
2. PWM/PFM Automatic Switching
If PWM/PFM automatic switching control is selected and the step-down ratio is lo w (e.g, from 4.5V to 5.0V) or high (e.g.,
from 10 V to 1.0 V), the control mode remains in PFM setting over the whole load range, since the duty ratio under
continuous-duty condition is smaller than the PFM duty ratio of the XC9503 series. T he output voltage's ripple voltage
becomes substantially high under heavy load conditions, with the XC9503 series appearing to be produ cing an abnormal
oscillation. If this operation becomes a concern, set pins PWM1 and PWM2 to High to set the control mode to PWM
setting. F or use under the above-mentioned condition, measured d ata of PWM/PFM automatic switching control shown
on the data sheets are available up to I
3. Ratings
Use the XC9503 series and external components within the limits of their ratings.
OUT = 100 mA.
Series
11/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
1.2
PWM Co ntrol
(V)
1.1
OUT1, 2
1.0
0.9
0.8
Output Voltage1, 2 V
0.7
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
2.0
PWM Co nt rol
1.9
(V)
VIN=2.7V 3.3V 4.2V 5.0V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
1.8
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
6.0V 8.0V 10V
(mA)
OUT1, 2
=1.8V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
(V)
OUT1, 2
Output Voltage1, 2 V
(V)
OUT1, 2
FOCS=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
1.2
PWM/PFM Switching Control
1.1
1.0
0.9
0.8
0.7
0.1 1 10 100 1000
5.0V
4.2V, 6.0V 8.0V 10.0V
Output Current1, 2 I
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
2.0
PWM/PFM S witching Control
1.9
1.8
6.0V 8.0V 10.0V
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=2.7V 3.3V
(mA)
OUT1, 2
=1.8V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
1.7
1.6
Output Voltage1, 2 V
1.5
0.1 1 10 100 1000
VIN= 2.7V 3.3V 4.2V
5.0V 6.0V 8.0V 10V
Output Current1, 2 I
OUT1, 2
(mA)
1.7
1.6
Output Voltage1, 2 V
1.5
0.1 1 10 100 1000
Output Current1, 2 I
VIN= 2.7V 3.3V 4.2V 5.0V
(mA)
OUT1, 2
(V)
OUT1, 2
FOSC=300kHz, V
2.7
PWM Control
2.6
2.5
=2.5V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0V
(V)
OUT1, 2
FOSC=300kHz, V
2.7
PWM/PFM Switching Control
2.6
2.5
=2.5V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0V
8.0V
2.4
2.3
Output Voltage1, 2 V
2.2
0.1 1 10 100 1000
VIN = 2.7V 3.3V 4.2V
5.0V 6.0V 8.0V
Output Current1, 2 I
OUT1, 2
(mA)
2.4
2.3
Output Voltage1, 2 V
2.2
0.1 1 10 100 1000
3.3V 4.2V 5.0V 6.0V
Output Current1, 2 I
OUT1, 2
VIN=2.7V
(mA)
* When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V,
C
L should be 94μF (Tantalum) + 100μF (OS-COM)
12/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued)
(V)
OUT1, 2
3.5
3.4
3.3
PWM Control
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=4.2V 5.0V 6.0V 8.0V
=3.3V
(V)
OUT1, 2
FOSC=300kHz, V
3.5
PWM/PFM Switching Control
3.4
3.3
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
VIN=4.2V 5.0V 6.0V 8.0V
3.2
3.1
Output Voltage1, 2 V
3.0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
10.0V
(mA)
3.2
3.1
Output Voltage1, 2 V
3.0
0.1 1 10 100 1000
Output Current1, 2 I
10.0V
OUT1, 2
XC9503
Series
=3.3V
(mA)
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
5.2
PWM Control
5.1
(V)
OUT1, 2
5.0
4.9
4.8
Output Voltage1, 2 V
4.7
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=180kHz, V
L=47μH(CDRH6D38), CL=94μF(Tantalum)
1.2
PWM Control
1.1
(V)
OUT1, 2
1.0
=5.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0V
VIN= 6.0V 8.0V
(mA)
OUT1, 2
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0V
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
5.2
PWM/PFM Switching Control
5.1
(V)
OUT1, 2
5.0
4.9
4.8
Output Voltage1, 2 V
4.7
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=180kHz, V
L=47μH(CDRH6D38), CL=94μF(Tantalum)
1.2
PWM/PFM Switching Control
1.1
(V)
OUT1, 2
1.0
=5.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0V
VIN= 6.0V 8.0V
(mA)
OUT1, 2
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0V
0.9
0.8
Output Voltage1, 2 V
0.7
0.1 1 10 100 1000
Output Current1, 2 I
VIN=2.7V 3.3V 4.2V
5.0V 6.0V 8.0V
(mA)
OUT1, 2
Output Voltage1, 2 V
* When setting V
0.9
0.8
0.7
0.1 1 10 100 1000
OUT1, 2 =1.0V, VIN=8.0V, 10.0V,
4.2V 5.0V 6.0V 8.0V
Output Current1, 2 I
VIN=2.7V 3.0V
(mA)
OUT1, 2
CL should be 94μF (Tantalum) + 100μF (OS-COM)
13/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued)
(V)
FOSC=180kHz, V
3.5
PWM/PFM Switching Control
PWM Control
3.4
=3.3V
L=47μH(CDRH6D38), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
OUT1, 2
3.3
3.2
3.1
Output Voltage1, 2 V
3.0
0.1 1 10 100 1000
VIN=4.2V 5.0V 6.0V 8.0V 10V
Output Current1, 2 I
OUT1, 2
(mA)
(V)
OUT1, 2
Output Voltage1, 2 V
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
1.2
PWM Co ntrol
1.1
1.0
0.9
0.8
0.7
0.1 1 10 100 1000
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
Output Current1, 2 I
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
(mA)
OUT1, 2
(V)
OUT1, 2
FOSC=500kHz, V
3.5
PWM Control
3.4
3.3
3.2
L=10μH(CDRH5D28), CL=94μF(Tantalum)
VIN=4.2V 5.0V 6.0V 8.0V 10V
=3.3V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
3.1
Output Voltage1, 2 V
3.0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
FOSC=180kHz, V
5.2
PWM/PFM S witching Control
PWM Control
5.1
(V)
OUT1, 2
5.0
4.9
4.8
Output Voltage1, 2 V
4.7
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=500kHz, V
1.2
PWM/PFM Switching Control
1.1
(V)
OUT1, 2
1.0
0.9
0.8
Output Voltage1, 2 V
0.7
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
3.5
PWM/PFM S witching Control
3.4
(V)
OUT1, 2
3.3
3.2
3.1
Output Voltage1, 2 V
3.0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
L=47μH(CDRH6D38), CL=94μF(Tantalum)
VIN= 6.0V 8.0V 10V
OUT1, 2
L=10μH(CDRH5D28), CL=94μF(Tantalum)
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=4.2V 5.0V 6.0V 8.0V
=5.0V
SD:C MS02, Tr:XP162A12A6P
(mA)
OUT1, 2
=1.0V
SD:C MS02, Tr:XP162A12A6P
(mA)
OUT1, 2
=3.3V
10.0V
(mA)
OUT1, 2
* When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V,
CL should be 94μF (Tantalum) + 100μF (OS-COM)
14/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued)
(V)
OUT1, 2
FOSC=500kHz, V
5.2
PWM/PFM Switching Control
PWM Control
5.1
5.0
4.9
=5.0V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN = 6.0V 8.0V 10V
4.8
Output Voltage1, 2 V
4.7
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
XC9503
Series
15/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current
(%)
FFI1, 2
Efficiency1, 2 E
(%)
FFI1, 2
Efficiency1, 2 E
100
(%)
FFI1, 2
Efficiency1, 2 E
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM S witching Control
PWM Control
80
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
80
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
80
60
40
20
0
0.1 1 10 100 1000
PWM/PFM Switching Control
PWM Control
Output Current1, 2 I
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
4.2V
3.3V
VIN=2.7V
(mA)
OUT1, 2
=1.8V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN= 2.7V
3.3V
4.2V
(mA)
OUT1, 2
=2.5V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=2.7V
3.3V
4.2V
(mA)
OUT1, 2
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Control
80
(%)
FFI1, 2
Efficiency1, 2 E
6.0V
60
40
20
0
0.1 1 10 100 1000
8.0V
Output Current1, 2 I
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
80
(%)
FFI1, 2
Efficiency1, 2 E
10.0V
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Control
80
(%)
FFI1, 2
Efficiency1, 2 E
* When setting V
L should be 94μF (Tantalum) + 100μF (OS-COM)
C
OUT1, 2 =1.0V, VIN=8.0V, 10.0V,
10V
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0V
VIN=5.0V
(mA)
OUT1, 2
=1.8V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=5.0V
8.0V
6.0V
(mA)
OUT1, 2
=2.5V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=5.0V
8.0V
6.0V
(mA)
OUT1, 2
16/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current (Continued)
(%)
FFI1, 2
Efficiency1, 2 E
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM S witching Control
PWM Control
80
10.0V
60
40
20
0
0.1 1 10 100 1000
VIN=4.2V
Output Current1, 2 I
=3.3V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
8.0V
6.0V
5.0V
(mA)
OUT1, 2
(%)
FFI1, 2
Efficiency1, 2 E
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Control
80
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=6.0V
(%)
FFI1, 2
FOSC=180kHz, V
100
PWM/PFM Switching Control
PWM Control
80
60
L=47μH(CDRH6D28), CL=94μF(Tantalum)
40
Efficiency1, 2 E
20
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
4.2V
3.3V
VIN=2.7V
(%)
FFI1, 2
Efficiency1, 2 E
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
100
80
60
40
20
0
0.1 1 10 100 1000
8.0V
Output Current1, 2 I
OUT1, 2
PWM/PFM S witching Control
PWM Control
(%)
FFI1, 2
Efficiency1, 2 E
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
100
5.0V
80
VIN=4.2V
60
40
20
0
0.1 1 10 100 1000
PWM/PFM Switching Control
PWM Control
Output Current1, 2 I
=3.3V
OUT1, 2
SD: C MS02, Tr:XP162A12A6P
10V
8.0V
6.0V
(mA)
OUT1, 2
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
100
80
(%)
60
FFI1, 2
40
Efficiency1, 2 E
20
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
PWM/PFM Switching Control
PWM Control
* When setting V
C
L should be 94μF (Tantalum) + 100μF (OS-COM)
OUT1, 2 =1.0V, VIN=8.0V, 10.0V,
=5.0V
10.0V
8.0V
(mA)
OUT1, 2
=1.0V
SD:C MS02, Tr:XP162A12A6P
VIN=5.0V
6.0V
10V
(mA)
OUT1, 2
=5.0V
SD:C MS02, Tr:XP162A12A6P
10V
8.0V
VIN=6.0V
(mA)
OUT1, 2
XC9503
Series
17/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS(Continued)
(2) Efficiency vs. Output Current (Continued)
(%)
FFI1, 2
FOSC=500kHz, V
100
PWM/PFM Switching Control
PWM Control
80
60
40
L=10μH(CDRH5D28), CL=94μF(Tantalum)
Efficiency1, 2 E
20
VIN=2.7V
0
0.1 1 10 100 1000
Output Current1, 2 I
(%)
FFI1, 2
FOSC=500kHz, V
100
PWM/PFM S witching Control
PWM Control
80
60
40
L=10μH(CDRH5D28), CL=94μF(Tantalum)
10.0V
Efficiency1, 2 E
20
VIN=4.2V
0
0.1 1 10 100 1000
Output Current1, 2 I
=1.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
4.2V
3.3V
(mA)
OUT1, 2
=3.3V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
8.0V
6.0V
5.0V
(mA)
OUT1, 2
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM S witching Control
PWM Control
80
(%)
60
FFI1, 2
40
Efficiency1, 2 E
20
0
0.1 1 10 100 1000
VIN=5.0V
Output Current1, 2 I
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
PWM Control
80
(%)
60
FFI1, 2
40
Efficiency1, 2 E
20
0
0.1 1 10 100 1000
Output Current1, 2 I
* When setting V
C
L should be 94μF (Tantalum) + 100μF (OS-COM)
OUT1, 2 =1.0V, VIN=8.0V, 10.0V,
OUT1, 2
OUT1, 2
VIN=6.0V
=1.0V
SD:C MS02, Tr:XP162A12A6P
10V
8.0V
6.0V
(mA)
OUT1, 2
=3.3V
SD:C MS02, Tr:XP162A12A6P
10.0V
8.0V
(mA)
OUT1, 2
18/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current
Ripple Voltage1, 2 (mV)
FOSC=300kHz, V
100
PWM Control
80
60
40
20
=1.0V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
VIN=2.7V 3.3V 5.0V 6.0V
8.0V 10V
4.2V
Ripple Voltage1, 2 (mV)
FOSC=300kHz, V
100
PWM/PFM S witching Control
80
60
40
6.0V
20
OUT1, 2
L=22μH(CDRH5D28), CL=94μF(Tantalum)
5.0V
SD:C MS02, Tr:XP162A12A6P
4.2V10V
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
100
PWM/PFM Switching Control
80
60
10V
40
L=22μH(CDRH5D28), CL=94μF(Tantalum)
8.0V
100
PWM Control
80
60
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
VIN=2.7V 3.3V 4.2V 5.0V
=1.8V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
6.0V 8.0V 10V
40
OUT1, 2
SD:CMS02, Tr:XP162A12A6P
5.0V
6.0V
4.2V
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
100
PWM Control
=2.5V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
80
60
40
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
FOSC=300kHz, V
100
PWM/PFM Switching Control
80
60
10V
40
L=22μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
5.0V
Ripple Voltage1, 2 (mV)
20
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
0
0.1 1 10 100 1000
Output Current1, 2 I
* When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V,
CL should be 94μF (Tantalum) + 100μF (OS-COM)
8.0V
OUT1, 2
OUT1, 2
4.2V6.0V8.0V
OUT1, 2
=1.0V
VIN=2.7V
3.3V
(mA)
=1.8V
3.3V
(mA)
=2.5V
3.3V
(mA)
XC9503
Series
VIN=2.7V
VIN=2.7V
19/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued)
Ripple Voltage1, 2 (mV)
100
Ripple Voltage1, 2 (mV)
100
Ripple Voltage1, 2 (mV)
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM Control
80
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
PWM Control
80
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
PWM Control
80
60
40
20
0
0.1 1 10 100 1000
Output Current1, 2 I
VIN =2.7V 3.3V 4.2V 5.0V
=3.3V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=4.2V 5.0V 6.0V
8.0V 10V
(mA)
OUT1, 2
=5.0V
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
VIN=6.0V
8.0V
10V
(mA)
OUT1, 2
=1.0V
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
6.0V 8.0V 10V
(mA)
OUT1, 2
* When setting V
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
80
60
VIN=4.2V
40
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current1, 2 I
FOSC=300kHz, V
L=22μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
80
60
40
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
8.0V
Output Current1, 2 I
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
100
PWM/PFM S witching Control
80
60
VIN=2.7V
40
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2 =1.0V, VIN=8.0V, 10.0V,
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
6.0V5.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10.0VVIN=6.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
5.0V4.2V
OUT1, 2
CL should be 94μF (Tantalum) + 100μF (OS-COM)
8.0V
OUT1, 2
OUT1, 2
6.0V10V
=3.3V
10.0V
(mA)
=5.0V
(mA)
=1.0V
8.0V
3.3V
(mA)
20/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued)
100
Ripple Voltage1, 2 (mV)
PWM Control
80
60
40
20
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
VIN =4.2V 6.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
=3.3V
5.0V
8.0V
10V
100
PWM/PFM S witching Control
80
60
40
VIN=4.2V
Ripple Voltage1, 2 (mV)
20
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
5.0V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
8.0V6.0V
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
0
0.1 1 10 100 1000
Output Current1, 2 I
100
PWM Control
80
FOSC=180kHz, V
L=47μH(CDRH6D28), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
=5.0V
FOSC=180kHz, V
100
PWM/PFM Switching Control
80
OUT1, 2
L=47μH(CDRH6D28), CL=94μF(Tantaium)
SD: C MS02, Tr: XP162A12A6P
60
40
Ripple Voltage1, 2 (mV)
20
VIN=6.0V
10V
8.0V
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
60
40
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current1, 2 I
8.0V
OUT1, 2
Ripple Voltage1, 2 (mV)
FOSC=500kHz, V
100
PWM Control
80
60
40
20
=1.0V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
VIN=2.7V 3.3V 4.2V 5.0V
6.0V 8.0V 10V
100
PWM/PFM Switching Control
80
60
40
Ripple Voltage1, 2 (mV)
20
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
VIN=2.7V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
5.0V10V8.0V
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
(mA)
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
* When setting VOUT1, 2 =1.0V, VIN=8.0V, 10.0V,
C
L should be 94μF (Tantalum) + 100μF (OS-COM)
OUT1, 2
=3.3V
10V
(mA)
=5.0V
(mA)
=1.0V
4.2V6.0V
(mA)
XC9503
Series
10VVIN= 6.0V
3.3V
21/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued)
FOSC=500kHz, V
100
PWM Control
80
60
L=10μH(CDRH5D28), CL=94μF(Tantalum)
40
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
VIN=4.2V
Output Current1, 2 I
=3.3V
OUT1, 2
SD:C MS02, Tr:XP162A12A6P
10V
8.0V
6.0V
5.0V
(mA)
OUT1, 2
Ripple Voltage1, 2 (mV)
100
PWM Control
80
60
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
=5.0V
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
40
8.0V
Ripple Voltage1, 2 (mV)
20
0
0.1 1 10 100 1000
Output Current1, 2 I
VIN=6.0V
OUT1, 2
(mA)
10V
Ripple Voltage1, 2 (mV)
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM Switching Control
80
60
VIN=4.2V
40
20
0
0.1 1 10 100 1000
5.0V
Output Current1, 2 I
FOSC=500kHz, V
L=10μH(CDRH5D28), CL=94μF(Tantalum)
100
PWM/PFM S witching Control
80
60
40
VIN=6.0V
20
0
0.1 1 10 100 1000
Output Current1, 2 I
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
6.0V
OUT1, 2
SD: C MS02, Tr: XP162A12A6P
10V
8.0V
8.0V
OUT1, 2
OUT1, 2
=3.3V
10V
(mA)
=5.0V
(mA)
22/32
■
℃25℃
℃
C
C
C
TYPICAL PERFORMANCE CHARACTERISTICS(Continued)
(4) Supply Current 1 vs. Supply Voltage (5) Supply Current 1_1 vs. Supply Voltage
250
)
A
200
(μ
150
100
XC9503B092 (180KHz)
Topr=85
℃
25
℃
- 40
℃
)
A
(μ
250
200
150
100
XC9503B0 92 (1 80KHz)
Topr=85
- 40
50
Supply Current 1 IDD1
0
0246810
Supply Voltage VDD (V)
50
Suppy Current 1-1 IDD1-1
0
0246810
Supply Voltage VDD (V)
(6) Supply Current 1_2 vs. Supply Voltage (7) Supply Current 2 vs. Supply Voltage
)
A
(μ
250
200
150
100
Supply Current 1-2 IDD1-2
XC9503B092 (180KHz)
O
Topr=85
Topr=85
℃
O
25
25
℃
O
- 40
- 40
℃
50
0
0246810
Supply Voltage VDD (V)
250
)
A
200
(μ
150
100
Supply Current 2 IDD2
XC9503B092 (180KHz)
Topr=85
℃
25
℃
- 40
℃
50
0
0246810
Supply Voltage VDD (V)
(8) Stand-by Current vs. Supply Voltage (9) Oscillation Frequency vs. Supply Voltage
)
A
(μ
10
Stand-by Curret ISTB
XC9503B092 (180KHz)
Topr=85
℃
8
6
4
2
0
0246810
25
℃
- 40
℃
Suppy Voltage VDD (V)
）
（
360
kHz
330
300
270
Oscillaltion Frequency Fosc
240
XC9503B093(180kHz)
0246810
Supply Voltage VDD (V)
XC9503
Series
23/32
■
)
)
X
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS(Continued)
(10) EN1, 2 'High' 'Low' Voltage vs. Supply Voltage
0.8
(V)
1, 2
0.6
0.4
0.2
EN1, 2 'H' 'L' Voltage VEN
XC9503B093 (300KHz)
- 40
℃
85
℃
Topr=25
℃
0
0246810
Supply Voltage VDD (V)
(12) PFM Duty Ratio 1, 2 vs. Supply Voltage
XC9503B093(300kHz)
40
Topr=85
℃
25
35
30
25
PFM duty ratio 1, 2 (%
20
0246810
℃
- 40
℃
Supply Voltage VDD (V)
(14) EXT1, 2 'High' On Resistance vs. Supply Voltage
50
(Ω)
40
30
XC9503B092 (180KHz)
Topr=85
- 40
℃
25
℃
℃
20
10
EXT1, 2 'High' On Resistance
0
0246810
Supply Voltage VDD (V)
(11) PWM1, 2 'High' 'Low' Voltage vs. Supply Voltage
XC9503B093 (300KHz)
0.8
(V)
2
,
0.6
PWM1
0.4
Topr=25
0.2
PWM1, 2 'H' 'L' Voltage V
0
0246810
℃
Supply Voltage VDD (V)
- 40
85
℃
℃
(13) Output Voltage vs. Ambient Temperature
C9503B093(300kHz)
XC9503B093(300kHz)
L=22uH(CDRH5D28), CL=94uF(Tantal um)
3.5
3.4
3.3
3.2
3.1
Output Volt age VOUT ( V
3.0
-50 -20 10 40 70 100
A mbient T emperatur e Ta (℃)
Tr:XP162A12A6, SD:CM S02
VIN=5.0 V
IOUT=200mA
(15) EXT1, 2 'Low' On Resistance vs. Supply Voltage
XC9503B092 (180KHz)
50
(Ω)
40
30
20
10
EXT1, 2 'Low' ON Resistance
0
0246810
Supply Voltage VDD (V)
Topr=85
- 40
℃
25
℃
℃
24/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Soft-Start Time 1, 2 vs. Supply Voltage
XC9503
Series
25/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(17) Load Transient Response
● PWM Control
CH1
CH2
● PWM/PFM Switching Control
CH1
CH2
OUT1, 2 = 3.3 V, VIN = 5.0V, IOUT1, 2 = 100μA⇔300mA >
< V
FOSC = 300kHz, V
IN = 5.0V, IOUT1, 2 = 100μA → 300mA
V
OUT1, 2 = 3.3V
3.3V
300mA
100μA
200μsec/div
CH1: VOUT1, 2, AC-COUPLED, 100mV/div
OUT1, 2, 150mA/div
CH2: I
FOSC=300kHz, V
IN=5.0V, IOUT1, 2 =100μA→300mA
V
OUT1, 2 =3.3V
3.3V
300mA
100μA
200μsec/div
CH1: VOUT1, 2, AC-COUPLED, 100mV/div
OUT1, 2, 1 50mA/div
CH2: I
CH1
CH2
CH1
CH2
FOSC = 300kHz, V
IN = 5.0V, IOUT1, 2 = 300mA → 100μA
V
OUT1, 2 = 3.3V
10msec/div
CH1: VOUT1, 2, AC-COUPLED, 50mV/div
OUT1, 2, 150mA/div
CH2: I
FOSC=300kHz, V
IN=5.0V, IOUT1, 2=300mA→100μA
V
OUT1, 2=3.3V
10msec/div
OUT1, 2, AC-COUPLED, 100mV/div
CH1: V
OUT1, 2, 150mA/div
CH2: I
3.3V
300mA
100μA
3.3V
300mA
100μA
26/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(17) Load Transient Response (Continued)
● PWM Control
CH1
CH2
< VOUT1, 2 = 3.3V, VIN = 5.0V, IOUT1, 2 =10mA ⇔ 300mA >
FOSC=300kHz, V
IN=5.0V, IOUT1, 2 =10mA→300mA
V
OUT1, 2 =3.3V
200μsec/div
CH1: VOUT1, 2, AC-COUPLED, 50mV/div
OUT1, 2, 150mA/div
CH2: I
● PWM/PFM Switching Control
OUT1, 2 =3.3V
CH1
CH2
FOSC=300kHz, V
IN=5.0V, IOUT1, 2 =10mA→300mA
V
200μsec/div
CH1: V
OUT1, 2, AC-COUPLED, 100mV/div
OUT1, 2, 150mA/div
CH2: I
3.3V
300mA
10mA
3.3V
300mA
10mA
CH1
CH2
CH1
CH2
FOSC=300kHz, V
IN=5.0V, IOUT1, 2 =300mA→10mA
V
400μsec/div
CH1: VOUT1, 2, AC-COUPLED, 50mV/div
OUT1, 2, 150mA/div
CH2: I
FOSC=180kHz, VOUT1=3.3V
V
IN=5.0V, IOUT1, 2 =300mA→10mA
200μsec/div
CH1: V
OUT1, 2, AC-COUPLED, 50mV/div
OUT1, 2, 150mA/div
CH2: I
XC9503
Series
OUT1, 2=3.3V
3.3V
300mA
10mA
3.3V
100mA
10mA
27/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(17) Load Transient Response (Continued)
● PWM Control
< VOUT1, 2 = 0.9V, VIN = 3.3V, IOUT1, 2 =100μA ⇔ 300mA >
FOSC=300kHz, V
IN=3.3V, IOUT1, 2 =100μA→300mA
V
CH1
CH2
OUT1, 2 =0.9V
0.9V
300mA
100μA
200μsec/div
CH1: VOUT1, 2, AC-COUPLED, 20mV/div
OUT1, 2, 150mA/div
CH2: I
● PWM/PFM Switching Control
OUT1, 2 =0.9V
0.9V
300mA
100μA 100μA
CH1
CH2
FOSC=300kHz, V
V
IN=3.3V, IOUT1, 2 =100μA→300mA
200μsec/div
OUT1, 2, AC-COUPLED, 20mV/div
CH1: V
CH2: I
OUT1, 2, 150mA/div
CH1
CH2
CH1
CH2
FOSC=300kHz, V
IN=3.3V, IOUT1, 2 =300mA→100μA
V
4msec/div
CH1: V
OUT1, 2, AC-COUPLED, 20mV/div
OUT1, 2, 150mA/div
CH2: I
FOSC=300kHz, VOUT1, 2 =0.9V
V
IN=3.3V, IOUT1, 2 =300mA→100μA
200μsec/div
OUT1, 2, AC-COUPLED, 50mV/div
CH1: V
OUT1, 2, 150mA/div
CH2: I
OUT1, 2 =0.9V
0.9V
300mA
100μA
0.9V
300mA
28/32
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(17) Load Transient Response (Continued)
● PWM Control
CH1
CH2
CH1
< VOUT1, 2 = 0.9V, VIN = 3.3V, I OUT1, 2 =10mA ⇔ 300mA >
FOSC=300kHz, V
IN=3.3V, IOUT1, 2 =10mA→300mA
V
OUT1, 2 =0.9V
100μsec/div
CH1: V
OUT1, 2, AC-COUPLED, 20mV/div
OUT1, 2, 150mA/div
CH2: I
● PWM/PFM Switching Control
OUT1, 2 =0.9V
CH2
FOSC=300kHz, V
V
IN=3.3V, IOUT1, 2 =10mA→300mA
200μsec/div
OUT1, 2, AC-COUPLED, 20mV/div
CH1: V
CH2: I
OUT1, 2, 150mA/div
0.9V
300mA
10mA
0.9V
300mA
10mA
CH1
CH2
CH1
CH2
FOSC=300kHz, V
IN=3.3V, IOUT1, 2 =300mA→10mA
V
OUT1, 2 =0.9V
100μsec/div
CH1: VOUT1, 2, AC-COUPLED, 20mV/div
OUT1, 2, 150mA/div
CH2: I
FOSC=300kHz, VOUT1, 2 =0.9V
V
IN=3.3V, IOUT1, 2 =300mA→10mA
200μsec/div
CH1: V
OUT1, 2, AC-COUPLED, 20mV/div
OUT1, 2, 150mA/div
CH2: I
XC9503
Series
0.9V
300mA
10mA
0.9V
300mA
10mA
29/32
■
XC9503 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(17) Load Transient Response (Continued)
CH2
CH1
CH2
CH3
30/32
< PWM Control ⇔ PWM / PFM Switching Control >
FOSC=300kHz, V
IN=5.0V, IOUT1, 2 =5mA, PWM1, 2 'Low'→'High'
V
CH1
OUT1, 2 =3.3V
400μsec/div
CH1: VOUT1, 2, AC-COUPLED, 10mV/div
OUT1, 2, 0.5V/div
CH2: I
< Soft-Start Wave Form >
FOSC=300kHz, V
V
IN = 5.0V, IOUT1, 2 = 300mA,
EN1, 2 'Low'→'High', C
OUT1, 2 =3.3V
IN=47μF
4msec/div
CH1: VOUT1, 2, 2.0V/div
CH2: I
IN1, 2, 100mA/div
CH3: EN1, 2, 0.5V/div
3.3V
0.65V
0V
3.3V
200mA
0.65V
FOSC=300kHz, V
V
IN=5.0V, IOUT1, 2 =5mA, PWM1, 2 'High'→'Low'
CH1
CH2
OUT1, 2 =3.3V
200μsec/div
CH1: VOUT1, 2, AC-COUPLED, 20mV/div
CH2: I
OUT1, 2, 0.5V/div
FOSC=300kHz, VOUT1, 2 =3.3V
V
IN = 5.0V, IOUT1, 2 = 100mA,
EN1, 2 'Low'→'High', C
CH1
CH2
CH3
4msec/div
CH1: V
OUT1, 2, 2.0V/div
CH2: I
IN1, 2, 50mA/div
CH3: EN1, 2, 0.5V/div
* CH1: EN2=GND when measurement
CH2: EN1=GND when measurement
3.3V
0.65V
0V
IN=47μF
3.3V
75mA
0.65V
■
■
PACKAGING INFORMATION
●MSOP-10
MARKING RULE
●MSOP-10, USP-10
(TOP VIEW)
7 6910
8
① ② ③
⑥⑤④
3
4 521
MSOP-10
USP-10
(TOP VIEW)
Unit : mm
XC9503
Series
●USP-10
① represents product series
MARK PRODUCT SERIES
4 XC9503B09xxx
② represents type of DC/DC controller
MARK PRODUCT SERIES
B XC9503B09xxx
③, ④ represents FB voltage
MARK
③ ④
VOLTAGE (V) PRODUCT SERIES
0 9 0.9 XC9503B09xxx
⑤ represents oscillatio n frequency
MARK
OSCILLATION FREQUENCY
(kHz)
2 180 XC9503B092xx
3 300 XC9503B093xx
5
500 XC9503B095xx
⑥ represents production lot numb er
0 to 9, A to Z repeated (G, I, J, O, Q, W excluded)
Note: No character inversion used.
Unit : mm
PRODUCT SERIES
31/32
XC9503 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 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.
(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.
32/32
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