XC9147 Series

Highly functionality, 1.4A Step-up DC/DC Converters

XC9147 series are synchronous step-up DC/DC converters with a 0.17Ω Nch driver FET and a 0.2Ω synchronous Pch switching FET built-in.

The series are able to start operation from an input voltage of 0.9V, suitable for equipment using single Alkaline battery or Nickel metal hydride battery.

The output voltage can be set from 1.8V to 5.5V in steps of 0.1V. During the devices enter stand-by mode, A/D/G/J types prevent the application malfunction by CL Discharge function which can quickly discharge the electric charge at the output capacitor (CL). B/E/H/K types are able to allow the drive of subsequent devices by the bypass function which maintain continuity between the input and output. C/F/M/L types are able to connect in parallel with other power supplies by Load Disconnection function which breaks continuity between the input and output.

G/H/M/J/K/L types are able to stop the operation of the IC and reduce leakage of alkaline batteries when the battery voltage drops by the UVLO function. The release voltage of UVLO is 1.6V.

Typical Application Circuit


Input Voltage Range 0.65V ~ 6.0V (Operation start voltage : 0.9V)
Fixed Output Voltage 1.8V ~ 5.5V (A Type)
2.2V ~ 5.5V (D/G/J Type)
Oscillation Frequency 1.2MHz, 3.0MHz
Output Current 750mA @VOUT=5.0V, VBAT=3.3V
500mA @VOUT=3.3V, VBAT=1.8V
Control Mode Selection PWM
Load Transient Response 100mV@VOUT=3.3V,VBAT=1.8V, fosc=3.0MHz
Protection Circuits Thermal Shutdown
Current Limit,
Integral Latch ((D/E/F/J/K/L Type)
Short Circuit Protection (D/E/F/J/K/L Type)
UVLO (G/H/M/J/K/L Type)
Functions Soft Start
Load Disconnection (A/C/D/F/G/M/J/L Types)
CLDischarge(A/D/G/J Types)
Output Capacitor Ceramic Capacitor
Operating Ambient Temperature -40℃ ~ 105℃
Environmentally Friendly EU RoHS Compliant, Pb Free



Technical Document