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Application Notes/ Tips
DC/DC Simulation

HOME > PRODUCTS LINEUP > DC/DC Converters

DC/DC Converters

RoHS

DC/DC converters are the power supply that provides a certain voltage, converting the input voltage with high efficiency. There are four types of DC/DC converters, step-up DC/DC converters, step-down DC/DC converters, step-up/down DC/DC converters, and multi channel DC/DC converters. The following there control types are available to meet user’s individual control demands. PWM controlled types are highly efficient and excel in the ripple and the noise of output voltage. PFM controlled types consume only a little power even if operated all the time, especially when lightly loaded. PWM /PFM automatically switchable types work at PFM control when loaded lightly and switch to PWM control when loaded heavily.

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INPUT VOLTAGE (V)
 OUTPUT VOLTAGE (V)
 OUTPUT CURRENT (mA)
Inductor Built-in Step-up Step-down Step-up/down Multi channel all

Inductor Built-in micro DC/DC Convertrers.

SERIES CONTROL Built-in FET INPUT VOLTAGE
(V)		 OUTPUT VOLTAGE
(V)		 MAX OUTPUT CURRENT
(mA)		 OSCILLATION FREQUENCY PACKAGE PDF
Min Max Min Max
XCL205 NEW
XCL206 NEW
XCL207 NEW 		 Inductor Built-in  Nch FET
Pch FET 		 2  6  0.8  4  600  3.0MHz  CL-2025   

Achieves both high efficiency and a smaller and lower profile

Step-up

SERIES CONTROL Built-in FET INPUT VOLTAGE
(V)		 OUTPUT VOLTAGE
(V)		 MAX OUTPUT CURRENT
(mA)		 OSCILLATION FREQUENCY PACKAGE PDF
Min Max Min Max
XC6367
XC6368 		 PWM/PFM  None  0.9  10  1.5  6.5  1000  100kHz
180kHz
300kHz
500kHz 		 SOT-25   
XC6371
XC6372 		 PWM/PFM  Nch FET  0.9  10  2  7  100  50kHz
100kHz
180kHz 		 SOT-89
SOT-89-5
USP-6B 		  
XC9101  PWM  None  2.5  20  2.2  30  1500  100~600kHz  MSOP-8A   
XC9103
XC9104
XC9105 		 PWM/PFM  None  0.9  10  1.5  30  1000  100kHz
180kHz
300kHz
500kHz 		 SOT-25
USP-6B 		  
XC9106
XC9107 		 PWM/PFM  None  0.9  10  1.5  30  1000  100kHz
300kHz 		 SOT-25
USP-6B 		  
XC9110
XC9111 		 PFM  Nch FET  0.9  10  1.5  7  100  100kHz  SOT-23
SOT-25
SOT-89
USP-6C 		  
XC9116 Recommended  PWM  Nch FET  2.5  6  8  18  20  1.0MHz  SOT-25
USP-6B 		  
XC9119 Recommended  PWM  Nch FET  2.5  6  10  18  100  1.0MHz  SOT-25
USP-6C 		  
XC9120
XC9121
XC9122 		 PWM/PFM  None  0.9  6  1.5  30  80  100kHz  SOT-25
USP-6C 		  
XC9128 NEW
XC9129 NEW 		 1A Driver Transistor Built-In  Nch FET
Pch FET 		 0.8  6  1.8  5.3  500  1.2MHz  USP-10B
MSOP-10
SOP-8 		  
XC9131
NEW 		 1A Driver Transistor Built-In
(refer to XC9129) 		 Nch FET
Pch FET 		 0.65  5.5  1.8  5  500  1.2MHz  USP-10B   
XC9133
NEW
Recommended 		 LED Backlight  MOSFET  2.5  6  2.5  17.5  20  1MHz  SOT-25
USP-6C(under development) 		  

Step-down

SERIES CONTROL Built-in FET INPUT VOLTAGE
(V)		 OUTPUT VOLTAGE
(V)		 MAX OUTPUT CURRENT
(mA)		 OSCILLATION FREQUENCY PACKAGE PDF
Min Max Min Max
XC6365
XC6366 		 PWM/PFM  None  2.2  10  1.5  6  1000  180kHz
300kHz
500kHz 		 SOT-25
USP-6C 		  
XC9213 Recommended  PWM/PFM  None  4  25  1.5  15  5000  300kHz  TSSOP-16   
XC9220 Recommended
XC9221 Recommended 		 PWM/PFM  None  2.8  16  1.2  -  3000  300kHz
500kHz
1.0MHz 		 SOT-25
USP-6C 		  
XC9223 Recommended
XC9224 Recommended 		 PWM/PFM  Nch FET
Pch FET 		 2.5  6  0.9  6  1000  1.0MHz
2.0MHz 		 MSOP-10
USP-10 		  
XC9235 NEW
XC9236 NEW
XC9237 NEW 		 PWM/PFM  Nch FET
Pch FET 		 1.8  6  0.8  4  600  1.2MHz
3.0MHz 		 SOT-25
USP-6C
USP-6EL 		  
XCM526
NEW 		 Step-down DC/DC controller IC + P-channel power MOSFET  P-ch FET  4  16  1.2  -  3000  500kHz
1MHz 		 USP-12B01   

Step-up/down

SERIES CONTROL Built-in FET INPUT VOLTAGE
(V)		 OUTPUT VOLTAGE
(V)		 MAX OUTPUT CURRENT
(mA)		 OSCILLATION FREQUENCY PACKAGE PDF
Min Max Min Max
XC9301
XC9302 		 PWM/PFM  None  2  10  2.4  6  250  180kHz
300kHz 		 SOT-25   
XC9303  PWM/PFM  None  2  10  2  6  800  300kHz  MSOP-8A   

Multi channel

SERIES COMPONENTS CONTROL Built-in FET INPUT VOLTAGE
(V)		 OUTPUT VOLTAGE
(V)		 MAX OUTPUT CURRENT
(mA)		 OSCILLATION FREQUENCY PACKAGE PDF
Min Max Min Max
XC9501  Step-Up
+
Step-Up 		 2ch DC/DC with adjustable VOUT  None  0.9  10  1.5  30  500  100kHz
180kHz
300kHz
500kHz 		 MSOP-10
USP-10 		  
XC9502  Step-Up
+
Step-Down 		 2ch DC/DC with adjustable VOUT  None  2  10  1.5  30  500  100kHz
180kHz
300kHz
500kHz 		 MSOP-10
USP-10 		  
XC9503  Step-Down
+
Step-Down 		 2ch DC/DC with adjustable VOUT  None  2  10  0.9  6  1000  100kHz
180kHz
300kHz
500kHz 		 MSOP-10
USP-10 		  
XC9504  Step-Up
+
Inverting 		 2ch DC/DC with adjustable VOUT  None  2  10  1.5  30  500  100kHz
180kHz
300kHz
500kHz 		 MSOP-10
USP-10 		  
XC9505  Step-Down
+
Inverting 		 2ch DC/DC with adjustable VOUT  None  2  10  0.9  6  1000  100kHz
180kHz
300kHz
500kHz 		 MSOP-10
USP-10 		  
XC9509 Recommended  Step-Down
+
LDO 		 DC/DC with parallel input LDO  Nch FET
Pch FET 		 2.4  6  0.9  4  600  300kHz
600kHz
1.2MHz 		 MSOP-10
USP-10 		  
XC9515 NEW Recommended  Step-Down
+
Step-Down 		 2ch DC/DC with Power-on RESET  Nch FET
Pch FET 		 2.5  5.5  1.2  4  800  1.0MHz  QFN-20   
XCM517 NEW Recommended  Step-Down
+
Step-Down 		 2ch DC/DC in 2.3x2.8x0.6 package  Nch FET
Pch FET 		 2.7  6  0.8  4  600  1.2MHz
3.0MHz 		 USP-12B01   
XCM519 NEW  Step-Down
+
LDO 		 small package 2.3x2.8x0.6  Nch FET
Pch FET 		 2.7  6  0.8  4  600  1.2MHz
3.0MHz 		 USP-12B01   
XCM520 NEW  Step Down
+
Dual LDO 		 PWM/PFM  Nch FET
Pch FET 		 2.7  6  2.3  600  3.0MHz  USP-12B01   
XCM524 NEW  Step Down DC/DC+LDO+VD  600mA Step Down DC/DC
500mA LDO
Delay Function VD 		 Pch
Nch 		 2.7  6  0.8  4  600  1.2MHz
3.0MHz 		 USP-12B01   
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