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