XCL232 Series

Ultra-Low Quiescent Current, Inductor Built-in Step-Down DC/DC Converter

The XCL232 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in one tiny package. It uses an ultra-low current consumption circuit and PFM control. The control IC and coil are integrated to achieve miniaturization, and a space-saving power supply can be configured simply by adding two external capacitors. In addition, the ultra-low current consumption circuit and PFM control method realize high efficiency with a light load.
A operating voltage range of 1.8V to 6.0V enables support for applications that require an internally fixed output voltage from 0.5V to 3.6V.

It has a built-in UVLO function, the internal P-channel driver FET and N-channel driver FET are turned OFF when input voltage is below to the UVLO detection voltage. The D type integrate CL discharge function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge switch located between the VOUT and GND. When the devices enter stand-by mode, output voltage quickly returns to the GND level as a result of this function.

Typical Application Circuit


Input Voltage Range 1.8V ~ 6.0V
Output Voltage Setting 0.5V ~ 1.9V (0.05V increments)
2.0V ~ 3.6V (0.1V increments)
Output Voltage Accuracy ±20mV (VOUT1-2≦1.0V)
±2.0% (VOUT1-2>1.0V)
Output Current 150mA
Supply Current 200nA @ VOUT=1.8V
Control Method PFM Control
Efficiency 86% (VIN=3.6V, VOUT=1.8V, IOUT=10mA)
Function CL Discharge (D Type)
UVLO Function
Protection Circuits Short Protection
Input / Output Capacitor Ceramic Capacitor
Operating Ambient Temperature -40℃ ~ 85℃
Environmentally Friendly EU RoHS Compliant, Pb Free


Package CL-2025-03 Number of Pins 6
Pcs/Reel 3,000 Package Size(mm) 2.0 x 2.5 x 1.04


Technical Document