Description
The AP2953A is a monolithic synchronous buck regulator.
The device integrates 100mΩ 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.

Features
3A Output Current
Wide 4.75V to 18V Operating Input Range
Integrated 100mΩ 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