General Description

ROHM’s high efficiency step-down switching regulator (BD9122GUL) is a power supply designed to produce a low voltage including 1 volts from 5/3.3 volts power supply line. Offers high efficiency with our original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load.

Features

■ Offers fast transient response with current mode

PWM control system.

■ Offers highly efficiency for all load range with

synchronous rectifier (Nch/Pch FET) and SLLM™

(Simple Light Load Mode)

■ Incorporates soft-start function.

■ Incorporates thermal protection and ULVO functions.

■ Incorporates short-current protection circuit with

time delay function.

■ Incorporates shutdown function

Applications

Power supply for LSI including DSP, Micro computer and ASIC