Products - Step-Down

XCL226 Low Power 18V, 500mA Buck Micro DC/DC with integrated Coil

Low Power 18V, 500mA Buck Micro DC/DC with integrated Coil image


Property XCL226
Output Current 500mA
Input Voltage 3.0V ~ 18.0V
FB Voltage 0.75V ±1.5%
Oscillation Frequency 1.2MHz
Quiescent Current 12.5µA
Packages DFN3030-10B

Product Description

18V 500mA PWM/PFM Synchronous Step-Down Micro DC/DC Converter

The XCL226 is a synchronous step-down Micro DC/DC converter with integrated coil in an ultra-small 3.0 x 3.0 x 1.7mm DFN3030-10B package. A stable and efficient power supply circuit can be configured by simply adding only two ceramic capacitors externally thereby contributing to PCB space saving and the shortening of development time.

Integration of the coil simplifies the board layout and minimises any unwanted radiated noise. With a P-Ch High Side Switch to ensure low Voltage operation and 100% max duty ratio, the XCL226 can operate from 3.0V~18.0V and deliver loads up to 500mA. It’s designed for very high efficiencies at low output loads, with low quiescent current and automatic PFM/PWM mode.

The XCL226 also includes a current limit fold-back circuit, adjustable soft-start and a power good output. In addition, an innovative Copper “CoolPost” structure provides improved thermal performance by more than 30%. 


Input Voltage: 3.0V ~ 18.0V
Output Voltage: 1.0V ~ 15.0V
FB Voltage: 0.75V ±1.5%
Output Current: 500mA
Oscillator Frequency: 1.2MHz
PWM/PFM Control
Compatible with ceramic capacitors
Built-in soft start circuit
DFN3030-10B Package

If PWM Only is required, please see XCL225