ADP2302

RECOMMENDED FOR NEW DESIGNS

2A, 700KHz NonSynchronous Step-Down DC-DC Switching Regulator

Data Sheet (Rev. B) Product Selection Table

Part Models: 8
1ku List Price: Starting From $1.32

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Overview

Wide input voltage range: 3.0 V to 20 V
Maximum load current
2 A for ADP2302
3 A for ADP2303

±1.5% output accuracy over temperature
Output voltage down to 0.8 V
See datasheet for additional features

The ADP2302 / ADP2303 are fixed frequency, current-mode control, step-down, dc-to-dc regulators with an integrated power MOSFET. The ADP2302 / ADP2303 can run from an input voltage of 3.0 V to 20 V, which makes them suitable for a wide range of applications. The output voltage of the ADP2302 / ADP2303 can be down to 0.8 V for the adjustable version, while the fixed output version is available in preset output voltage options of 5.0 V, 3.3 V, and 2.5 V. The 700 kHz operating frequency allows small inductor and ceramic capacitors to be used, providing a compact solution. Current mode control provides fast and stable line and load transient performance. The ADP2302 / ADP2303 have integrated soft start circuitry to prevent a large inrush current at power-up. The power-good signal can be used to sequence devices that have an enable input. The precision enable threshold voltage allows the part to be easily sequenced from other input/output supplies. Other key features include undervoltage lockout (UVLO), overvoltage protection (OVP), thermal shutdown (TSD), and overcurrent protection (OCP).

The ADP2302/ADP2303 devices are available in the 8-lead, SOIC package with exposed paddle and are rated for the −40oC to +125oC junction temperature range.

APPLICATIONS

Intermediate power rail conversion
DC-to-DC point of load applications
Communications and networking equipments
Industrial and instrumentation
Healthcare and Medical
Consumer electronics

Part Models: 8
1ku List Price: Starting From $1.32

Documentation

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
ADP2302ARDZ	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP2302ARDZ-2.5	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP2302ARDZ-2.5-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP2302ARDZ-3.3	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP2302ARDZ-3.3-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP2302ARDZ-5.0	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP2302ARDZ-5.0-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP2302ARDZ-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 23, 2025 - 25_0174 ADP2302/ADP2303 Package Outline Drawing and Data Sheet Revision
		PCN25_0174_Form Material_Report Package Outline Drawing
ADP2302ARDZ	PRODUCTION
ADP2302ARDZ-2.5	PRODUCTION
ADP2302ARDZ-2.5-R7	PRODUCTION
ADP2302ARDZ-3.3	PRODUCTION
ADP2302ARDZ-3.3-R7	PRODUCTION
ADP2302ARDZ-5.0	PRODUCTION
ADP2302ARDZ-5.0-R7	PRODUCTION
ADP2302ARDZ-R7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
ADP2384	RECOMMENDED FOR NEW DESIGNS	20 V, 4 A, Synchronous Step-Down DC-to-DC Regulator
ADP2386	RECOMMENDED FOR NEW DESIGNS	20 V, 6 A, Synchronous Step-Down DC-to-DC Regulator

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

ADP2302

ADP230x 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

ADP230x Inverting Buck-Boost 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

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.

Evaluation Kits

ADP2302 Evaluation Board

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Product Details

The ADP2302/ADP2303 are 2 A/3 A, 20 V, nonsynchronous step-down, dc-to-dc regulators with an integrated power MOSFET in a SOIC package with an exposed paddle. The ADP2302/ ADP2303 evaluation boards are complete buck regulator solutions that allow users to evaluate the performance of the regulators.

The ADP2302/ADP2303 integrated soft-start circuitry prevents inrush current at power-up. The power-good output indicates that the output voltage is regulated within tolerance, and it can be used to sequence devices that have an enable input. The precision enable feature allows the part to be easily sequenced from external supplies. Other key features include undervoltage lockout (UVLO), output overvoltage protection (OVP), thermal shutdown (TSD), and overcurrent protection (OCP).

Resources

UG-189: Evaluation Board for the 2 A/3 A, 20 V, Nonsynchronous Step-Down Regulators
9/21/2010

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