ADP2443

RECOMMENDED FOR NEW DESIGNS

ADP2443

3 A, 36 V, Synchronous Step-Down DC-to-DC Regulator

RECOMMENDED FOR NEW DESIGNS

Part Details

Not the part you were looking for?

Go to Product Selection Table

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 1

1ku List Price Starting From $2.51

Features

Continuous output current: 3 A
Input voltage: 4.5 V to 36 V
Integrated MOSFETs: 98 mΩ/35 mΩ
Reference voltage: 0.6 V ± 1%
Fast minimum on time: 50 ns
Programmable switching frequency: 200 kHz to 1.8 MHz
Synchronizes to external clock: 200 kHz to 1.8 MHz

Precision enable and power good
Cycle-by-cycle current limit with hiccup protection
External compensation
Programmable soft start time
Startup into a precharged output
Supported by ADIsimPower design tool

Additional Details

The ADP2443 is synchronous step-down, dc-to-dc regulator with an integrated 98 mΩ, high-side power metal oxide semicon-ductor field effect transistor (MOSFET) and a 35 mΩ, synchronous rectifier MOSFET to provide a high efficiency solution in a compact 4 mm × 4 mm LFCSP package. The regulators operate from an input voltage range of 4.5 V to 36 V. The output voltage can be adjusted down to 0.6 V and deliver up to 3 A of continuous current. The fast 50 ns minimum on time allows the regulators convert high input voltage to low output voltage at high frequency.

The ADP2443 uses an emulated current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The switching frequency of the ADP2443 can be programmed from 200 kHz to 1.8 MHz. The synchronization function allows the switching frequency be syn-chronized with an external clock to minimize the system noise.

The ADP2443 targets high performance applications that require high efficiency and design flexibility. External compensation and an adjustable soft start function provide design flexibility. The power-good output and precision enable input provide simple and reliable power sequencing.

Other key features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), short-circuit protection (SCP), and thermal shutdown (TSD).

The ADP2443 operates over the −40°C to +125°C operating junction temperature range and is available in a 24-lead, 4 mm × 4 mm LFCSP package.

Applications

Intermediate power rail conversion
Multicell battery powered systems
Process control and industrial automation
Healthcare and medical
Networking and servers

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 1

1ku List Price Starting From $2.51

Documentation

Technical Documents 2

ADP2443: 3 A, 36 V, Synchronous Step-Down DC-to-DC Regulator Data Sheet (Rev.0) 09/15/2016

UG-1029: Evaluation Board for the ADP2443 3 A, 36 V, Synchronous Step-Down DC-to-DC Regulator (Rev.0) 09/15/2016

Design Resources 1

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADP2443ACPZN-R7	24-Lead LFCSP (4mm x 4mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

ADP2443ACPZN-R7
Pin/Package Drawing
24-Lead LFCSP (4mm x 4mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Nov 10, 2022

- 22_0277

Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

ADP2443ACPZN-R7

PRODUCTION

pdf

PCN22_0277_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Qualification Plan

pdf

Qualification Plan

pdf

Qualification Results Summary

Filter by Model

Part Models

Product Lifecycle

PCN

Nov 10, 2022

- 22_0277

Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

ADP2443ACPZN-R7

PRODUCTION

pdf

PCN22_0277_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Qualification Plan

pdf

Qualification Plan

pdf

Qualification Results Summary

Software & Part Ecosystem

Evaluation Kit

EVAL-ADP2443

ADP2443 Evaluation Board

ADP2443 Evaluation Board

Download

EVAL-ADP2443

ADP2443 Evaluation Board

Features and Benefits

Full featured evaluation board for the ADP2443
Compact solution size
4-layer high glass transition temperature (T_G) printed circuit board (PCB) for superior thermal performance
Convenient connections through vertical printed circuit tail pin headers
Supply voltage

4.5 V to 36 V for PVIN

Synchronization capable
Independent enable control
Power-good output

Buy Now View Details

Product Detail

The ADP2443-EVALZ evaluation board provides a complete and compact solution that allows users to evaluate all the performance of the ADP2443 with a near ideal PCB layout.

The main device on the evaluation board, the ADP2443, is a synchronous step-down, dc-to-dc regulator with both high-side and low-side MOSFETs integrated to provide a high efficiency solution in a compact, 4 mm × 4 mm LFCSP package.

The evaluation board has independent enable control, which allows flexible configuration when evaluating the ADP2443.

Full details on the ADP2443 regulator are provided in the ADP2443 data sheet, available from Analog Devices, Inc. Consult the data sheet in conjunction with this user guide when working with this evaluation board.

Resources

PDF

UG-1029: Evaluation Board for the ADP2443 3 A, 36 V, Synchronous Step-Down DC-to-DC Regulator (Rev.0)

350.12 K

EVAL-ADP2443

ADP2443 Evaluation Board

Tools & Simulations

LTspice 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Lt Spice

ADP2443 - Step-Down (Buck) Regulators

2.61 K

ADP244x Buck Regulator Design Tool

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

Open Tool