SC4607

Very Low Input, MHz Operation,High Efficiency Synchronous Buck

Description

The is a voltage mode step down buck regulator controller that provides accurate high efficiency power conversion from an input supply range of 2.25V to 5.5V. The SC4607 is capable of producing an output voltage as low as 0.5V and has a maximum duty cycle of 97%. A high level of integration reduces external component count, and makes it suitable for low voltage applications where cost, size, and efficiency are critical.

Features

‹Asynchronous start up

BiCMOS voltage mode PWM controller

Operation of frequency to 1MHz

2.25V to 5.5V input voltage range

Output voltages as low as 0.5V

+/-1% reference accuracy

Sleep mode Icc = 10µA typ

Adjustable lossless short circuit current limiting

Combination pulse by pulse & hiccup mode current limit

High efficiency synchronous switching

Up to 97% duty cycle

1A peak current driver

10-pin MSOP package