Add to Signal Chain Designer

ADP122:  5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator, Fixed Output Voltage

Product Details


The ADP122/ADP123 are low quiescent current, low dropout linear regulators. They are designed to operate from an input voltage between 2.3 V and 5.5 V and to provide up to 300 mA of output current. The low 85 mV dropout voltage at a 300 mA load improves efficiency and allows operation over a wide input voltage range.

The low 170 μA of quiescent current at full load makes the ADP122 ideal for battery-operated portable equipment.

The ADP122 is capable of 31 fixed output voltages from 1.75 V to 3.3 V. The ADP123 is the adjustable version of the device and allows the output voltage to be set between 0.8 V and 5.0 V by an external voltage divider.

The ADP122/ADP123 are specifically designed for stable operation with tiny 1 μF ceramic input and output capacitors to meet the requirements of high performance, space constrained applications.

The ADP122/ADP123 have an internal soft start that gives a constant start-up time of 350 μs. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP122/ADP123 are available in a tiny, 5-lead TSOT package and 6-lead LFCSP package for the smallest footprint solution to meet a variety of portable applications.

    APPLICATIONS
  • Digital camera and audio devices
  • Portable and battery-powered equipment
  • Automatic meter reading (AMR) meters
  • GPS and location management units
  • Medical instrumentation
  • Point-of-sale equipment

FEATURES and BENEFITS

  • Input voltage supply range: 2.3 V to 5.5 V
  • 300 mA maximum output current
  • Fixed and adjustable output voltage versions
  • Very low dropout voltage:
    85 mV at 300 mA load
  • Low quiescent current:
    45 μA at no load
  • Low shutdown current: <1 μA
  • Initial accuracy: ±1% accuracy
  • See Data Sheet for additional features

Typical Application Circuits for ADP122

Documentation

Title Content Type File Type
ADP122/ADP123: 5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator Datasheet (Rev E, 06/2012) (pdf, 609 kB) Data Sheets PDF
AN-1072: How to Successfully Apply Low Dropout Regulators  (pdf, 105 kB)
This application note reviews the basic LDO topology, explains key specifications, and shows the application of low dropout voltage regulators in systems.
Application Notes PDF
Isolating Power in Communication Bus and Gate Drive Applications
Starting with a communications application overview of small power options through the process of selecting the right power products this webcast is a great resource for your communications applications designs.
Webcasts WEBCAST
UG-147: RedyKit for the ADP122 LDO  (pdf, 163 kB)
Order the RedyKit for easy product evaluation and prototyping. The RedyKit ships with 2 preset evaluation boards plus 3 each of the standard fixed output voltage options in the product family. This allows evaluation of any voltage option with one kit.
User Guides PDF
UG-055: RedyKit for the ADP122/ADP123 LDO  (pdf, 370 kB)
Order the RedyKit for easy product evaluation and prototyping. The RedyKit ships with 2 preset evaluation boards plus 3 each of the standard fixed output voltage options in the product family. This allows evaluation of any voltage option with one kit.
User Guides PDF
The Fundamentals of LDO Design and Applications Technical Articles HTML
What are LDOs and how are they used? FAQs/RAQs 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
ADP150 Regulator Fixed Voltage Linux Driver Device Drivers 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

ADP122 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP122ACPZ-1.8-R7 Status: Production 6 ld LFCSP (2x2 w/1x1.6 EP) 6 Ind Reel, 3000 - $0.34 Y  Material Info PCN Purchase Sample
ADP122ACPZ-2.0-R7 Status: Production 6 ld LFCSP (2x2 w/1x1.6 EP) 6 Ind Reel, 3000 - $0.34 Y  Material Info PCN Purchase Sample
ADP122ACPZ-2.5-R7 Status: Production 6 ld LFCSP (2x2 w/1x1.6 EP) 6 Ind Reel, 3000 - $0.34 Y  Material Info PCN Purchase Sample
ADP122ACPZ-2.6-R7 Status: Production 6 ld LFCSP (2x2 w/1x1.6 EP) 6 Ind Reel, 3000 - $0.34 Y  Material Info PCN Purchase Sample
ADP122ACPZ-2.8-R7 Status: Production 6 ld LFCSP (2x2 w/1x1.6 EP) 6 Ind Reel, 3000 - $0.34 Y  Material Info PCN Purchase
ADP122ACPZ-3.0-R7 Status: Production 6 ld LFCSP (2x2 w/1x1.6 EP) 6 Ind Reel, 3000 - $0.34 Y  Material Info PCN Purchase Sample
ADP122ACPZ-3.3-R7 Status: Production 6 ld LFCSP (2x2 w/1x1.6 EP) 6 Ind Reel, 3000 - $0.34 Y  Material Info PCN Purchase Sample
ADP122AUJZ-1.8-R7 Status: Production TSOT-23 5, 6, 8 lead 5 Ind Reel, 3000 - $0.34 Y  Material Info Notify Me Purchase Sample
ADP122AUJZ-2.5-R7 Status: Production 5 ld TSOT 5 Ind Reel, 3000 - $0.34 Y  Material Info Notify Me Purchase Sample
ADP122AUJZ-2.7-R7 Status: Production 5 ld TSOT 5 Ind Reel, 3000 - $0.34 Y  Material Info Notify Me Purchase Sample
ADP122AUJZ-2.8-R7 Status: Production 5 ld TSOT 5 Ind Reel, 3000 - $0.34 Y  Material Info Notify Me Purchase Sample
ADP122AUJZ-2.85-R7 Status: Production 5 ld TSOT 5 Ind Reel, 3000 - $0.34 Y  Material Info Notify Me Purchase Sample
ADP122AUJZ-2.9-R7 Status: Production 5 ld TSOT 5 Ind Reel, 3000 - $0.34 Y  Material Info Notify Me Purchase Sample
ADP122AUJZ-3.0-R7 Status: Production 5 ld TSOT 5 Ind Reel, 3000 - $0.34 Y  Material Info Notify Me Purchase Sample
ADP122AUJZ-3.3-R7 Status: Production 5 ld TSOT 5 Ind Reel, 3000 - $0.34 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.

ADP122 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP122-3.3-EVALZ Status: Production Evaluation Board $60.00 Yes -
ADP122UJZ-REDYKIT Status: Production Evaluation Board $45.00 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

View Sales and Distribution Offices

沪ICP备09046653号
content here.
content here.

Review this Product

Close