General Description

The AP1501A series are monolithic ICs that are designed for a step-down DC/DC converter, and possess the ability to drive a 5A load without additional transistor component. Due to reducing

the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode.

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: 5A

• 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