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ADP2303:  3A, 700KHz NonSynchronous Step-Down DC-DC Switching Regulator

Product Details

Product Status:Recommended for New Designs

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
  • Consumer electronics
  • Healthcare and Medical

FEATURES and BENEFITS

  • Wide input voltage range: 3.0 V to 20 V
  • Maximum load current: 3 A for ADP2303
  • ±1.5% output accuracy over temperature range
  • Output voltage down to 0.8 V
  • 700 kHz switching frequency
  • Current-mode control architecture
  • Automatic PFM/PWM mode switching
  • Precision enable pin with hysteresis
  • Integrated high-side MOSFET
  • Integrated bootstrap diode
  • Internal compensation and soft start
  • Power-good output
  • Undervoltage lockout (UVLO)
  • Overcurrent protection (OCP)
  • Thermal shutdown (TSD)
  • 8-lead SOIC package with exposed paddle

Typical Application Circuit

Documentation

Title Content Type File Type
ADP2302/ADP2303: 2 A/3 A, 20 V, 700 kHz, Nonsynchronous Step-Down Regulators (Rev A, 06/2012) (pdf, 1002 kB) Data Sheets PDF
AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators  (pdf, 640 kB) Application Notes PDF
UG-189: Evaluation Board for the 2 A/3 A, 20 V, Nonsynchronous Step-Down Regulators  (pdf, 883 kB) User Guides PDF
Industrial ICs
Industrial ICs Solutions Bulletin, Volume 10, Issue 8
Solutions Bulletins HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADP230x Inverting Buck-Boost Regulator Design Tool  (zip, 0)
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
ADIsim Design/Simulation Tools ZIP
ADP230x Buck Regulator Design Tool  (zip, 0)
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
ADIsim Design/Simulation Tools ZIP
Download files for ADIsimPower™ Voltage Regulator Design Tool
The individual Excel-based voltage regulator design tools used in ADIsimPower™.
ADIsim Design/Simulation Tools HTML
ADIsimPower™ Voltage Regulator Design Tool
This expert design tool produces custom DC-DC converter designs in about a minute. The user enters 5 inputs and chooses to optimize for efficiency, PCB space, cost, or part count. Output is a complete schematic, BOM, efficiency plot, and performance summary. A PDF summary and a blank PCB is offered for each design to facilitate fast prototyping to verify the design.
ADIsim Design/Simulation Tools HTML
Launch of ADIsimPower Voltage Regulator Selection Vin (min) V Vout V   Find Solutions
Vin (max) V Iout A

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADP2303 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP2303ARDZ Status: Production 8 ld SOIC-EP 8 Ind Tube, 98 - $1.24 Y  Material Info Notify Me Purchase Sample
ADP2303ARDZ-2.5 Status: Production 8 ld SOIC-EP 8 Ind Tube, 98 - $1.24 Y  Material Info Notify Me Purchase Sample
ADP2303ARDZ-2.5-R7 Status: Production 8 ld SOIC-EP 8 Ind Reel, 1000 - $1.24 Y  Material Info Notify Me Purchase
ADP2303ARDZ-3.3 Status: Production 8 ld SOIC-EP 8 Ind Tube, 98 - $1.24 Y  Material Info Notify Me Purchase Sample
ADP2303ARDZ-3.3-R7 Status: Production 8 ld SOIC-EP 8 Ind Reel, 1000 - $1.24 Y  Material Info Notify Me Purchase
ADP2303ARDZ-5.0 Status: Production 8 ld SOIC-EP 8 Ind Tube, 98 - $1.24 Y  Material Info Notify Me Purchase Sample
ADP2303ARDZ-5.0-R7 Status: Production 8 ld SOIC-EP 8 Ind Reel, 1000 - $1.24 Y  Material Info Notify Me Purchase
ADP2303ARDZ-R7 Status: Production 8 ld SOIC-EP 8 Ind Reel, 1000 - $0.98 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADP2303 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP2303-EVALZ Status: Production Evaluation Board $60.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

Check Inventory & Purchase

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