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ADP322:  Triple, 200 mA, Low Noise, High PSRR Voltage Regulator

Product Status:Recommended for New Designs
Data
Sheet
ADP322 Data Sheet Rev A, 09/2011 (pdf 816kB)

Product Details

Product Status:Recommended for New Designs
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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

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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

Typical Application Circuit Diagram

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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
UG-187: RedyKit for the ADP322 Triple, 200 mA Low Dropout (LDO) Regulator  (pdf, 578 kB) User Guides PDF
UG-186: Evaluation Board User Guide for ADP322/ADP323  (pdf, 297 kB) User Guides PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Download files for ADIsimPower™ Voltage Regulator Design Tool
The individual Excel-based voltage regulator design tools used in ADIsimPower™. 		ADIsim Design/Simulation Tools HTML
Enter values and click on ADIsimPower to find power management solutions. Launch of ADIsimPower Voltage Regulator Design Tool
Available System Voltage Operating Voltage Rail Load Current
Vin (min) V Vin (max) V Vout 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.

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Price, packaging, availability

ADP322 Model Options
Model Package Pins Temp.
Range 		Packing,
Qty 		Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP322ACPZ-115-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $0.54 Y  Material Info Notify Me Purchase Sample
ADP322ACPZ-135-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $0.54 Y  Material Info Notify Me Purchase Sample
ADP322ACPZ-145-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $0.54 Y  Material Info Notify Me Purchase Sample
ADP322ACPZ-155-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $0.54 Y  Material Info Notify Me Purchase Sample
ADP322ACPZ-165-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $0.54 Y  Material Info Notify Me Purchase Sample
ADP322ACPZ-175-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $0.54 Y  Material Info Notify Me Purchase Sample
ADP322ACPZ-189-R7 Status: Production 16 ld LFCSP (3x3mm, 1.5mm exposed pad) 16 Ind Reel, 1500 - $0.54 Y  Material Info Notify Me Purchase Sample
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.

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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