Low Voltage Synchronous Buck Controller

The CS5212 is a low voltage synchronous buck controller. It contains all required circuitry for a synchronous buck converter using external N−Channel MOSFETs. High current internal gate drivers are capable of driving high gate capacitance of low RDS(on) NFETs for better efficiency. The V2 control architecture is used to achieve unmatched transient response, the best overall regulation and the simplest loop compensation.

Features

• Switching Regulator Controller

− N−Channel Synchronous Buck Design

− V2 Control Topology

− 200 ns Transient Response

− Programmable Fixed Frequency of 150 kHz−750 kHz

− 1.0 V 1.5 Internal Reference

− Lossless Inductor Sensing Overcurrent Protection

− Hiccup Mode Short Circuit Protection

− Programmable Soft−Start

− 40 ns GATE Rise and Fall Times (3.3 nF Load)

− 70 ns Adaptive FET Nonoverlap Time

− Differential Remote Sense Capability

− Available in Industrial and Commerical Temperature Grades

• System Power Management

− 3.3 V Operation

− Undervoltage Lockout

− On/Off Control Through Use of the COMP Pin

• Pb−Free Packages are Available*