20V, 2.5A/3.5A, Fully Integrated Synchronous

Buck Converter

ADPL12002/ADPL12003

19-102009; Rev 0;

5/25

© 202

5 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.

General Description

The

ADPL12002/ADPL12003

ICs

are

small,

synchronous buck converters with integrated high-side

and low-side switches. The ICs are designed to deliver

up to 2.5A/3.5A with a wide, 3V to 20V input voltage

range. Voltage quality can be monitored by observing

the PGOOD signal. The ICs can operate in dropout

mode by running at a 99% duty cycle, making it ideal for

factory automation applications.

The ADPL12002/ADPL12003 ICs offer externally

programmable output voltage. Fixed internal frequency

options of 400kHz/1.5MHz are available, allowing for

small external components and reduced output ripple.

When SYNC is low, the ADPL12002/ADPL12003

automatically enters skip mode at light loads with an

ultra-low quiescent current of 27µA at no load. A pin-

selectable Forced–Pulse-width modulation (PWM)

mode is also available, which helps to improve

Electromagnetic Interference (EMI) performance. The

devices have a spread-spectrum frequency modulation

option designed to minimize EMI-radiated emissions

due to the modulation frequency.

The ADPL12002/ADPL12003 ICs are available in a

small, 3mm x 3mm, 17-pin flip-chip quad flat no-lead

(FC2QFN)

package,

utilizing

a

few

external

components.

Key Applications

• Factory Automation

• Point-of-Load

• Distributed DC Power Systems

• Communication Infrastructure

• Test and Measurement

Benefits and Features

• Multiple Functions for Small Size

• Operating Input Voltage Range: 3V to 20V

• Synchronous DC-DC Converter with Integrated

Field-Effect Transistors (FETs) up to 2.5A/3.5A

• 27μA Quiescent Current in Skip Mode

• 400kHz/1.5MHz Switching Frequency

• Spread-Spectrum Option

• Internal Soft-Start

- 2.5ms for 400kHz

- 3.5ms for 1.5MHz

• Programmable 0.8V to 12V Output Voltage

Range

• 99% Duty Cycle Operation with Low Dropout

• High Precision for Safety-Critical Applications

• Precision Enable Thresholds for Fully

Programmable UVLO Thresholds

• Accurate Windowed PGOOD



Forced-PWM and Skip-Mode Operation



Overtemperature, Overvoltage, and Short-Circuit

Protection



3mm x 3mm, 15-Pin FC2QFN



-40°C to +150°C Operating Junction Temperature

Range

Ordering Information appears at end of data sheet.