General Description

BD9S109NUX-C is a synchronous buck DC/DC

Converter with built-in low On Resistance power

MOSFETs. It is capable of providing current up to 1 A.

Small inductor is applicable due to high switching

frequency of 2.2 MHz. It is a current mode control

DC/DC Converter and features high-speed transient

response. It has a built-in phase compensation circuit.

Applications can be created with a few external

components.

Features

◼ AEC-Q100 Qualified(Note 1)

◼ Single Synchronous Buck DC/DC Converter

◼ Adjustable Soft Start Function

◼ Output Discharge Function

◼ Power Good Output

◼ Input Under Voltage Lockout Protection (UVLO)

◼ Short Circuit Protection (SCP)

◼ Output Over Voltage Protection (OVP)

◼ Over Current Protection (OCP)

◼ Thermal Shutdown Protection (TSD)

(Note 1) Grade 1

Applications

◼ Automotive Equipment

◼ Other Electronic Equipment