XC9145 Series

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.

Typical Application Circuit


Input Voltage Range 0.65V ~ 5.5V
(Operation Start Voltage 1.6V)
Fixed Output Voltage 3.0V ~ 5.5V (0.1V increments)
Output Current 430mA @VOUT=5.0V, VBAT=3.3V
300mA @VOUT=3.3V, VBAT =1.8V
Oscillation Frequency 1.2MHz
Quiescent Current 400nA
Efficiency 89.9% @ VIN=2.4V, VOUT=3.3V, IOUT=10μA
93.2% @ VIN=2.4V, VOUT=3.3V, IOUT=100mA
Control Mode Auto PWM/PFM
Load Transient Response 300mV@VOUT=3.3V, VBAT =1.8V, IOUT=1mA→200mA
Protection Function Current Limit
Functions Soft Start
Load Disconnection
Operating Ambient Temperature -40℃ ~ 105℃
Environmentally Friendly EU RoHS Compliant, Pb Free


Package WLP-6-05 Number of Pins 6
Pcs/Reel 5,000 Package Size(mm) 1.28 x 1.08 x 0.4


Technical Document