General Description

The HT7466 is a DC-DC buck regulator. The built in high driver NMOS provides a monolithic solution for high effciency step-down DC-DC converter. With 3A output current, the wide input voltage range and stable output voltage regulation can widely use in all kinds of application, like communication, power for high power LED, battery charger, etc. The protection function include over current and over temperature protection. The soft start function prevent inrush supply current and output overshoot when initial startup. The under voltage lockout is set to 4.1V. It prevents abnormal situation occurring.

The HT7466 requires a minimum number of standard external components and is available in a 8-pin SOP package for small area PCB application.

Feature

• Input voltage range: 4.75V to 24V

• Variable output voltage range: 1.222V to 20V

• 3A output current

• Effciency up to 91

• Fixed 380kHz operating frequency

• 20mA shutdown current

• Internal power MOSFET switch

• Stable operation using low ESR ceramic capacitors

• Over temperature protection

• Cycle-by-cycle over current protection

• Soft-start function

• Under voltage lockout protection

• 8-pin SOP package

Applications

• Battery chargers

• Distributed power systems

• LED power supplies

• DSL modems

• Linear regulator pre power processing

• Set-Top-Boxes, DVD players, LCD displays