IR3447 - International Rectifier

IR3447 Synchronous Buck Regulator

The IR3447 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3447 a space-efficient solution, providing accurate power delivery for low output voltage and high current applications. IR3447 is a versatile regulator which offers programmability of switching frequency and current .

Features

 Single 5V to 21V application
 Wide Input Voltage Range from 1.5V to 21V with external Vcc
 Output Voltage Range: 0.6V to 0.86
*PVin
 0.5% accurate Reference Voltage
 Enhanced line/load regulation with Feed-Forward
 Programmable Switching Frequency up to 1.5MHz
 Internal Digital Soft-Start
 Enable input with Voltage Monitoring Capability
 Remote Sense Amplifier with True Differential Voltage Sensing
 Thermally compensated current limit and Hiccup Mode Over Current Protection
 Smart LDO to enhance efficiency
 External synchronization with Smooth Clocking
 Dedicated output voltage se.