HP8303B（降压IC）

GENERAL DESCRIPTION 

The HP8303B is a high-efficiency monolithic synchronous step-down DC/DC converter that operates from a 4V to 32V input voltage and can deliver up to 3A of continuous output current. The supply current of the HP8303B is 200µA when there is no load, and drops to <3µA when it is turned off. DCM/CCM mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 600kHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.925V feedback reference voltage. The HP8303B requires a minimal number of readily available, external components and is available in a small package.

FEATURES

• Wide 4V to 32V Operating Input Range

• 3A Continuous Output Current

• 600kHz Switching Frequency

• Short Protection with Hiccup-Mode

• Built-in overcurrent Limit

• Integrated internal Soft-Start

• 140/90mΩ Low RDS(ON) internal MOSFETs

• Output Adjustable from 0.925V

• Low EMI Signature

• 100% Duty cycle Max

• Thermal Shutdown

• COT Mode

• ESOP-8 Package

APPLICATIONS

• Automotive Entertainment

• Wireless and DSL Modems

• Computer Entertainment

• IoT Applications

• Digital Still and Video Cameras