AP1501

Document number: DS31014 Rev. 14 - 2

1 of 13

www.diodes.com

March 2021

© Diodes Incorporated

AP1501

150KHZ, 3A PWM BUCK DC/DC CONVERTER

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.

The AP1501 has integrated the shutdown function that allows standby

mode to be activated via an external logic signal input. The internal

compensation facilitates feedback control for line and load regulation

without the need of an external circuitry. The AP1501 has a built-in

Thermal shutdown and Current Limit function to prevent damage from

high operating temperature and high current operating to the output

switch.

Additional features include a guaranteed +/- 4% tolerance on the

output voltage under specified input and output load conditions, and

+/- 15% on oscillator frequency. The AP1501 offers both fixed and

adjustable output voltages. For fixed outputs the AP1501 supports

3.3V, 5.0V and 12V. The package options available are standard 5-

lead TO263 and TO220 packages.

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

•

TO263-5 and TO220-5 Packages

•

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

•

Halogen- and Antimony-Free. “Green” Device (Note 3)

•

For automotive applications requiring specific change

control (i.e. parts qualified to AEC-Q100/101/200, PPAP

capable, and manufactured in IATF 16949 certified

facilities), please contact us or your local Diodes

representative.

https://www.diodes.com/quality/product-definitions/

Pin Assignments

( Top View )

1 V

IN

5 SD

4 FB

3 Gnd

2 Output

Metal Tab GND

TO263-5L

1 V

IN

5 SD

4 FB

3 Gnd

2 Output

( Top View )

TO220-5L/TO220-5L(R)

Applications

•

Simple High-Efficiency Step-Down Regulator

•

On-Card Switching Regulators

•

Positive to Negative Converter

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and

Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

TO220-5L

TO263-5L