SY21113C -

Features

·         Low RDS(ON) for Internal Switches (Top/Bottom): 80mΩ/40mΩ

·         4.5-18V Input Voltage Range

·         3A Output Current Capability

·         1MHz Switching Frequency

·         Instant PWM Architecture to Achieve Fast Transient Responses.

·         Internal Softstart Limits the Inrush Current

·         ±1.5% 0.6V Reference

·         TSOT23-6 Package

Typical Application

Description

The SY21113C is a high efficiency 1MHz synchronous step down DC/DC converter capable of delivering 3A current. The SY21113C operates over a wide input voltage range from 4.5V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.


Low output voltage ripple and small external inductor and capacitor sizes are achieved with 1MHz switching frequency. It adopts the instant PWM architecture to achieve fast transient responses for high step down applications.

Applications

·       Set Top Box

·       Portable TV

·       Access Point Router

·       DSL Modem

·       LCD TV