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ADP323:  Triple, 200 mA, Low Noise, High PSRR Voltage Regulator

Product Details

Product Status:Recommended for New Designs

The ADP322/ADP323 200 mA triple output LDOs combine high PSRR, low noise, low quiescent current, and low dropout voltage to extend the battery life of portable devices and are ideally suited for wireless applications with demanding performance and board space requirements.

The ADP322/ADP323 PSRR is greater than 60 dB for frequencies as high as 100 kHz while operating with a low headroom voltage. The ADP322/ADP323 offer much lower noise performance than competing LDOs without the need for a noise bypass capacitor.

The ADP322/ADP323 are available in a miniature 16-lead, 3 mm × 3 mm LFCSP package and are stable with tiny 1 μF ±30% ceramic output capacitors, providing the smallest possible board area for a wide variety of portable power needs.

The ADP322 is available in output voltage combinations ranging from 0.8 V to 3.3 V and offers overcurrent and thermal protection to prevent damage in adverse conditions. The APDP323 adjustable triple LDO can be configured for any output voltage between 0.5 V and 5 V with two resistors for each output.


Applications
  • Mobile phones
  • Digital cameras and audio devices
  • Portable and battery-powered equipment
  • Portable medical devices
  • Post dc-to-dc regulation

FEATURES and BENEFITS

  • Fixed (ADP322) and adjustable output (ADP323) options
  • Bias voltage range (VBIAS): 2.5 V to 5.5 V
  • LDO input voltage range (VIN1/VIN2, VIN3): 1.8 V to 5.5 V
  • Three 200 mA low dropout voltage regulators (LDOs)
  • 16-lead, 3 mm × 3 mm LFCSP
  • Initial accuracy: ±1%
  • Stable with 1 μF ceramic output capacitors
  • No noise bypass capacitor required
  • 3 independent logic controlled enables
  • Overcurrent and thermal protection

Key Specifications

  • High PSRR
    76 dB PSRR up to 1 kHz
    70 dB PSRR at 10 kHz
    60 dB PSRR at 100 kHz
    40 dB PSRR at 1 MHz
  • Low output noise
    29 μV rms typical output noise at VOUT = 1.2 V
    55 μV rms typical output noise at VOUT = 2.8 V
  • Excellent transient response
  • See data sheet for additional features

Typical Application Circuit Diagram

Documentation

Title Content Type File Type
ADP322/ADP323: Triple, 200 mA, Low Noise, High PSRR Voltage Regulator Data Sheet (Rev A, 09/2011) (pdf, 816 kB) Data Sheets PDF
Introduction to ADIsimPower
ADIsimPower is a smart selector and a collection of downloadable tools that produce complete and optimized power designs. Schematic, bill of materials, and performance data are customized to your specific needs in minutes.
Videos HTML
UG-186: Evaluation Board User Guide for ADP322/ADP323  (pdf, 297 kB) User Guides PDF
Integrated Power Solutions for Altera FPGAs  (pdf, 2460 kB) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADI Linear Regulator Design Tool and Parametric Search  (zip)
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
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

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.

ADP323 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP323CP-EVALZ Status: Production Evaluation Board - Yes -
ADP322 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP322CP-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.

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