General Description

BD9B305QUZ is a synchronous buck DC/DC converter

with built-in low on-resistance power MOSFETs. It is

capable of providing current up to 3 A. It features fast

transient response due to constant on-time control

system. The Light Load Mode control improves efficiency

in light-load conditions. It is ideal for reducing standby

power consumption of equipment. Power Good function

makes it possible for system to control sequence. It

achieves the high power density and offer a small

footprint on the PCB by employing small package.

Features

Single Synchronous Buck DC/DC Converter

Constant On-time Control

Light Load Mode Control

Adjustable Soft Start

Power Good Output

Output Capacitor Discharge Function

Over Voltage Protection (OVP)

Over Current Protection (OCP)

Short Circuit Protection (SCP)

Thermal Shutdown Protection (TSD)

Under Voltage Lockout Protection (UVLO)

VMMP08LZ2020 Package

Backside Heat Dissipation

0.5 mm Pitch

Applications

Step-down Power Supply for SoC, FPGA,

Microprocessor

Laptop PC / Tablet PC / Server

LCD TV

Storage Device (HDD / SSD)

Printer, OA Equipment

Distributed Power Supply, Secondary Power Supply