Features

?  Maximum Output Current: 2A

?  Output Adjustable from 1.2V to 16V

?  Stable with Low ESR Output Ceramic

Capacitors

?  Thermal Shutdown

?  Up to 92% Efficiency

?  Cycle-by-Cycle Over Current Protection

?  Wide 5V to 16V Operating Input Range

?  Programmable Under Voltage Lockout

?  Available in 8 pin SO package

?  Frequency: up to 400kHz

Description

The HX1039B is a step down switch mode converter. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation.

Current mode operation provides fast transient response and eases loop stabilization.

Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.

The HX1039B requires a minimum number of readily available standard external components.

Applications
Pre-Regulator for Linear Regulators

?  Distributed Power Systems

?  Battery Charger

Typical Application Circuit