Inductor Built-in Step-up Converter (“micro DC/DC”)

The XCL103 series is a synchronous step-up micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.0mm×2.5mm, h=1.0mm). A stable step-up power supply is configured using only two capacitors connected externally. An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the circuit wiring.

A wide operating voltage range of 0.9V to 6.0V enables support for applications that require an internally fixed output voltage (2.2V to 5.5V).

During the devices enter stand-by mode, XCL103D type prevent the application malfunction by CL Discharge Function which can quickly discharge the electric charge at the output capacitor (CL). XCL103E type is able to drive Real Time Clock etc.


Input Voltage Range0.9V ~ 6.0V
Output Voltage Range2.2V ~ 5.5V (±2.0%)
0.1V increments
Input Current0.8A
Output Current500mA@VOUT=5.0V, VBAT=3.3V (TYP.)
350mA@VOUT=3.3V, VBAT=1.8V (TYP.)
Control Mode SelectionAuto PWM/PFM
Oscillation Frequency3.0MHz (±20%)
Protection CircuitsOver-current limit (Integral latch method)
Output short-circuit protection
Load Disconnection Function (D type)
CL Auto Discharge Function (D type)
Bypass Switch Function (E type)
Operating Ambient Temperature-40 ~ +85℃
Environmentally FriendlyEU RoHS Compliant, Pb Free

Typical Application Circuit

Technical Document


Package Number of Pins Pcs/Reel Package Size(mm)
CL-2025-02 6 3,000 2.0 x 2.5 x 1.04

XCL103 Series Part Numbers

Part number Sample Type Output Voltage Ocillation Frequency Package EDA Online Store

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