Description

The IR3871 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC voltage regulator. The onboard constant on time hysteretic controller and MOSFETs make IR3871 a space-efficient solution that delivers up to 8A of precisely controlled output voltage in 60°C ambient temperature applications without airflow.

Features

◾ Input Voltage Range: 3V to 26V

◾ Output Voltage Range: 0.5V to 12V

◾ Continuous 8A Load Capability

◾ Constant On-Time control

◾ Excellent Efficiency at very low output current levels

◾ Compensation Loop not required

◾ Programmable switching frequency, soft start, and over current protection

◾ Power Good Output

◾ Precision Voltage Reference (0.5V, +/-1)

◾ Pre-bias Start Up

◾ Under/Over Voltage Fault Protection

◾ Ultra small, low profile 5 x 6mm QFN Package

Applications

◾ Notebook and desktop computers

◾ Game consoles

◾ Consumer electronics – STB, LCD, TV, printers

◾ General purpose POL DC-DC converters