400nA Ultra-Low Quiescent, 0.8A, PWM/PFM Step-up DC/DC Converters

XC9145 series are synchronous step-up DC/DC converters with a 200mΩ N-channel driver FET and a 270mΩ synchronous P-channel switching FET built-in.

The ultra-low current consumption of 400nA and PWM/PFM auto-switching control have dramatically improved the efficiency of the output current of 10μA or less, which was difficult to achieve in the past. (89.9%@VIN=2.4V, VOUT=3.3V, IOUT=10μA)

XC9145 series can significantly reduce the power consumption of battery-powered devices which consume a large percentage of power when the system is in standby mode. It contributes to keeping battery life longer and reducing battery size smaller.


Input Voltage Range0.65V ~ 5.5V
(Operation Start Voltage 1.6V)
Fixed Output Voltage3.0V ~ 5.5V (0.1V increments)
Output Current430mA @VOUT=5.0V, VBAT=3.3V
300mA @VOUT=3.3V, VBAT =1.8V
Oscillation Frequency1.2MHz
Quiescent Current400nA
Efficiency89.9% @ VIN=2.4V, VOUT=3.3V, IOUT=10μA
93.2% @ VIN=2.4V, VOUT=3.3V, IOUT=100mA
Control ModeAuto PWM/PFM
Load Transient Response300mV@VOUT=3.3V, VBAT =1.8V, IOUT=1mA→200mA
Protection FunctionCurrent Limit
FunctionsSoft Start
Load Disconnection
Operating Ambient Temperature-40℃ ~ 105℃
Environmentally FriendlyEU RoHS Compliant, Pb Free

Typical Application Circuit

Technical Document


Package Number of Pins Pcs/Reel Package Size(mm)
SOT-25 5 3,000 2.8 x 2.9 x 1.3
USP-6C 6 3,000 1.8 x 2.0 x 0.6
WLP-6-05 6 5,000 1.28 x 1.08 x 0.4

XC9145 Series Part Numbers

Part number Sample Output Voltage Oscillation Frequency Package EDA Online Store
XC9145B30C0R-G 3.0V 1.2MHz WLP-6-05
XC9145B30CER-G 3.0V 1.2MHz USP-6C
XC9145B31C0R-G 3.1V 1.2MHz WLP-6-05
XC9145B31CER-G 3.1V 1.2MHz USP-6C
XC9145B32C0R-G 3.2V 1.2MHz WLP-6-05
XC9145B32CER-G 3.2V 1.2MHz USP-6C
XC9145B33C0R-G 3.3V 1.2MHz WLP-6-05
XC9145B33CER-G 3.3V 1.2MHz USP-6C
XC9145B34C0R-G 3.4V 1.2MHz WLP-6-05
XC9145B34CER-G 3.4V 1.2MHz USP-6C
XC9145B35C0R-G 3.5V 1.2MHz WLP-6-05
XC9145B35CER-G 3.5V 1.2MHz USP-6C
XC9145B36C0R-G 3.6V 1.2MHz WLP-6-05
XC9145B36CER-G 3.6V 1.2MHz USP-6C
XC9145B37C0R-G 3.7V 1.2MHz WLP-6-05
XC9145B37CER-G 3.7V 1.2MHz USP-6C
XC9145B38C0R-G 3.8V 1.2MHz WLP-6-05
XC9145B38CER-G 3.8V 1.2MHz USP-6C
XC9145B39C0R-G 3.9V 1.2MHz WLP-6-05
XC9145B39CER-G 3.9V 1.2MHz USP-6C
XC9145B40C0R-G 4.0V 1.2MHz WLP-6-05
XC9145B40CER-G 4.0V 1.2MHz USP-6C
XC9145B41C0R-G 4.1V 1.2MHz WLP-6-05
XC9145B41CER-G 4.1V 1.2MHz USP-6C
XC9145B42C0R-G 4.2V 1.2MHz WLP-6-05
XC9145B42CER-G 4.2V 1.2MHz USP-6C
XC9145B43C0R-G 4.3V 1.2MHz WLP-6-05
XC9145B43CER-G 4.3V 1.2MHz USP-6C
XC9145B44C0R-G 4.4V 1.2MHz WLP-6-05
XC9145B44CER-G 4.4V 1.2MHz USP-6C
XC9145B45C0R-G 4.5V 1.2MHz WLP-6-05
XC9145B45CER-G 4.5V 1.2MHz USP-6C
XC9145B46C0R-G 4.6V 1.2MHz WLP-6-05
XC9145B46CER-G 4.6V 1.2MHz USP-6C
XC9145B47C0R-G 4.7V 1.2MHz WLP-6-05
XC9145B47CER-G 4.7V 1.2MHz USP-6C
XC9145B48C0R-G 4.8V 1.2MHz WLP-6-05
XC9145B48CER-G 4.8V 1.2MHz USP-6C
XC9145B49C0R-G 4.9V 1.2MHz WLP-6-05
XC9145B49CER-G 4.9V 1.2MHz USP-6C
XC9145B50C0R-G 5.0V 1.2MHz WLP-6-05
XC9145B50CER-G 5.0V 1.2MHz USP-6C
XC9145B51C0R-G 5.1V 1.2MHz WLP-6-05
XC9145B51CER-G 5.1V 1.2MHz USP-6C
XC9145B52C0R-G 5.2V 1.2MHz WLP-6-05
XC9145B52CER-G 5.2V 1.2MHz USP-6C
XC9145B53C0R-G 5.3V 1.2MHz WLP-6-05
XC9145B53CER-G 5.3V 1.2MHz USP-6C
XC9145B54C0R-G 5.4V 1.2MHz WLP-6-05
XC9145B54CER-G 5.4V 1.2MHz USP-6C
XC9145B55C0R-G 5.5V 1.2MHz WLP-6-05
XC9145B55CER-G 5.5V 1.2MHz USP-6C
XC9145B30CMR-G 3.0V 1.2MHz SOT-25
XC9145B31CMR-G 3.1V 1.2MHz SOT-25
XC9145B32CMR-G 3.2V 1.2MHz SOT-25
XC9145B33CMR-G 3.3V 1.2MHz SOT-25
XC9145B34CMR-G 3.4V 1.2MHz SOT-25
XC9145B35CMR-G 3.5V 1.2MHz SOT-25
XC9145B36CMR-G 3.6V 1.2MHz SOT-25
XC9145B37CMR-G 3.7V 1.2MHz SOT-25
XC9145B38CMR-G 3.8V 1.2MHz SOT-25
XC9145B39CMR-G 3.9V 1.2MHz SOT-25
XC9145B40CMR-G 4.0V 1.2MHz SOT-25
XC9145B41CMR-G 4.1V 1.2MHz SOT-25
XC9145B42CMR-G 4.2V 1.2MHz SOT-25
XC9145B43CMR-G 4.3V 1.2MHz SOT-25
XC9145B44CMR-G 4.4V 1.2MHz SOT-25
XC9145B45CMR-G 4.5V 1.2MHz SOT-25
XC9145B46CMR-G 4.6V 1.2MHz SOT-25
XC9145B47CMR-G 4.7V 1.2MHz SOT-25
XC9145B48CMR-G 4.8V 1.2MHz SOT-25
XC9145B49CMR-G 4.9V 1.2MHz SOT-25
XC9145B50CMR-G 5.0V 1.2MHz SOT-25
XC9145B51CMR-G 5.1V 1.2MHz SOT-25
XC9145B52CMR-G 5.2V 1.2MHz SOT-25
XC9145B53CMR-G 5.3V 1.2MHz SOT-25
XC9145B54CMR-G 5.4V 1.2MHz SOT-25
XC9145B55CMR-G 5.5V 1.2MHz SOT-25

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