General Description

BD9G401EFJ-M and BD9G401UEFJ-M are buck

converters with built-in high side MOSFET. It has an

input voltage range of 4.5V to 42V. Current mode

architecture provides fast transient response and a

simple phase compensation setup.

The IC is mainly used as a secondary side power

supply: for example, a step-down output of 3.3V/5V can

be produced from voltage power supply such as 12V or

24V. In addition, it has a synchronization function with

an external CLK that provides noise management.

Features

◼ AEC-Q100 Qualified(Note 1)

◼ Integrated Nch MOSFET

◼ Synchronizes to external clock 250kHz to 500kHz

◼ ON/OFF Control through EN Terminal

(Standby current of 0μA)

◼ Small package(HTSOP-J8ES)

◼ LowDrop Out operation

(Note1: Grade 2)

Applications

◼ Consumer devices in general that has 12V / 24V lines

◼ Automotive applications

(Audio system, Navigation system, etc)

◼ Industrial distributed-power applications

◼ Entertainment equipment