General Description

The AP2014 controller IC is designed to provide a low cost synchronous Buck regulator for on-board DC to DC converter applications. With today’s ASIC products requiring supply voltages at 1.8V and lower, when the output current is as much as 3A and the input voltage is at either 3.3V or 5V, traditional linear regulator simply incurs too much loss within itself. The AP2014 together with dual N-channel MOSFETs provide a low cost solution for such applications. This device features an internal 200KHz oscillator (400KHz for A version), under-voltage lockout for both Vcc and Vc supplies, an external programmable soft-start function as well as output under-voltage detection that latches off the device when an output short is detected.

Features

• Synchronous Controller in 8-Pin Package

• Operating with single 5V or 12V supply voltage

• Internal 200KHz Oscillator (400KHz for AP2014A)

• Soft-Start Function

• Fixed Frequency Voltage Mode

• 500mA Peak Output Drive Capability

• Protects the output when control FET is shorted

• Lead Free Package SOP-8L

• SOP-8L: Available in “Green” Molding Compound (No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)

Applications

• Graphic Card

• Hard Disk Drive

• DDR memory source sink Vtt application

• Low cost on-board DC to DC such as 5V to 3.3V, 2.5V or 1.8V