描述 Description

The AP2953A is a monolithic synchronous buck regulator.

The device integrates 100m? MOSFETS that provide 3A

continuous load current over a wide operating input voltage

of 4.75V to 18V. Current mode control provides fast transient

response and cycle-by-cycle current limit.

An adjustable soft-start prevents inrush current at turn-on. In

shutdown mode, the supply current drops below 1μA.

This device, available in an 8-pin SOP package, provides a

very compact system solution with minimal reliance on

external components.

特性 Features

3A Output Current

Wide 4.75V to 18V Operating Input Range

Integrated 100m? Power MOSFET Switches

Output Adjustable from 0.925V to 15V

Up to 95% Efficiency

Programmable Soft-Start

Stable with Low ESR Ceramic Output Capacitors

Fixed 370KHz Frequency

Cycle-by-Cycle Over Current Protection

Input Under Voltage Lockout

Thermally Enhanced 8-Pin SOP Package

Applications

Distributed Power Systems

Networking Systems

FPGA, DSP, ASIC Power Supplies

Green Electronics/ Appliances

Notebook Computers