Description

The SC4603 is a voltage mode step down (buck) regulator controller that provides accurate high efficiency power conversion from input supply range 2.25V to 5.5V. 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

◆ BICMOS voltage mode PWM controller

◆ 2.25V to 5.5V Input voltage range

◆ Output voltages as low as 0.5V

◆ Sleep mode (Icc = 10µA typ)

◆ Lossless adjustable overcurrent protection

◆ Combination pulse by pulse & hiccup mode current limit

◆ High efficiency synchronous switching

◆ 0 to 100 Duty cycle range

◆ Synchronization to external clock

◆ Asynchronous start-up

◆ 1MHz frequency of operation

◆ 10-Pin MSOP surface mount package. Lead free product. This product is fully WEEE and RoHS compliant

Applications

◆ Distributed power architecture

◆ Servers/workstations

◆ Local microprocessor core power supplies

◆ DSP and I/O power supplies

◆ Battery powered applications

◆ Telecommunication equipment

◆ Data processing applications