XCL103 Series

General Description
Typical Application Circuit
Features
Packages
DATA SHEET
Technical Document
FAQ
References
Part numbers
Similar to

Inductor Built-in Step-up “micro DC/DC” 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.

Typical Application Circuit

Features

Input Voltage Range	0.9V ~ 6.0V
Output Voltage Range	2.2V ~ 5.5V (±2.0%) 0.1V increments
Input Current	0.8A
Output Current	500mA@V_OUT=5.0V, V_BAT=3.3V (TYP.) 350mA@V_OUT=3.3V, V_BAT=1.8V (TYP.)
Control Mode Selection	Auto PWM/PFM
Oscillation Frequency	3.0MHz (±20%)
Protection Circuits	Over-current limit (Integral latch method) Output short-circuit protection
Functions	Soft-start Load Disconnection Function (D type) CL Auto Discharge Function (D type) Bypass Switch Function (E type)
Operating Ambient Temperature	-40 ~ +85℃
Environmentally Friendly	EU RoHS Compliant, Pb Free

Packages

Package	CL-2025-02	Number of Pins	6
Pcs/Reel	3,000	Package Size(mm)	2.0 x 2.5 x 1.04
Package Dimensions [0.1MB] Taping Specifications [0.1MB] Package Power Dissipation [0.1MB] Perspective [0.1MB] Perspective[XCL210] [0.1MB] Control Plan [0.1MB] Control Plan[XCL210] [0.1MB]

DATA SHEET

XCL103 Series：DATA SHEET [1.7MB]

Technical Document

Technical Information [3.2MB]

FAQ

What is the soft-start function?: The function to soften the rise to prevent the inrush current.
How does the C_L discharge function work?: The function rapidly releases the charge remained in the C_L capacitor to make the V_OUT pin voltage zero. The V_OUT pin voltage does not reach zero immediately after being turned off by the CE function due to the charge remained in the connected C_L capacitor. While the charge in the C_L capacitor is gradually reaching zero, the LSI continues operating and does not work with the CE pin signal, which may cause a malfunction. This is why the discharge is required when turning off the CE pin. A larger capacitance of the capacitor needs longer time to be discharged.
What does C_L mean?: Load capacitor. Other companies often refer to it as C_OUT.