General Description

The AP1501 is a fully integrated step-down DC/DC converter, with the ability to drive 3A load without the need of additional driver components. The AP1501 operates at a switching frequency of 150KHZ enabling the use of small size filter components. As a result, board space is reduced and BOM costs are lowered.

Features

• Output voltage: 3.3V, 5V, 12V and adjustable output version

• Adjustable version output voltage range, 1.23V to 37V+4

• 150KHZ +15 fixed switching frequency

• Voltage mode non-synchronous PWM control

• Thermal-shutdown and current-limit protection

• ON/OFF shutdown control input

• Operating voltage can be up to 40V

• Output load current: 3A

• Low power standby mode

• Built-in switching transistor on chip

• Lead Free packages: TO263-5L and TO220-5L(R)

• TO263-5L and TO220-5L(R): Available in “Green” Molding Compound (No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• Simple High-efficiency step-down regulator

• On-card switching regulators

• Positive to negative converter