General Description

BD9S402MUF-C is a synchronous buck DC/DC converter

with built-in low ON resistor power MOSFETs. It can

provide current up to 4 A. Small inductor is applicable due

to high switching frequency of 2.2 MHz. It has fast transient

response performance due to current mode control. It has

a built-in phase compensation circuit. Applications can be

created with a few external components.

Features

◼ QuiCurTM

◼ Nano Pulse ControlTM

◼ AEC-Q100 Qualified(Note 1)

◼ Functional Safety Supportive Automotive Products

◼ Single Synchronous Buck DC/DC Converter

◼ Adjustable Soft Start Function

◼ Output Discharge Function

◼ Power Good Output

◼ Under Voltage Lockout Protection (UVLO)

◼ Short Circuit Protection (SCP)

◼ Output Over Voltage Protection (OVP)

◼ Over Current Protection (OCP)

◼ Thermal Shutdown Protection (TSD)

◼ Wettable Flank QFN Package

(Note 1) Grade 1

Applications

◼ Automotive Equipment

◼ Other Electronic Equipment