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ADP172:  300 mA, Low Quiescent Current, fixed-output, CMOS Linear Regulator in a WLCSP footprint

Product Details

Product Status:Recommended for New Designs

The ADP170/ADP171/ADP172 are low voltage input, low quiescent current, low-dropout (LDO) linear regulators that operate from 1.6 V to 3.6 V and provide up to 300 mA of output current. The low 50 mV dropout voltage at 300 mA load improves efficiency and allows operation over a wide input voltage range. The low 23 μA of quiescent current at no load makes the ADP172 ideal for battery-operated portable equipment.

The ADP172 is capable of 31 fixed-output voltage options, ranging from 0.8 V to 3.0 V. The ADP172 is optimized for stable operation with small 1 μF ceramic output capacitors. Ideal for powering digital processors, the ADP172 exhibits good transient perform- ance and occupies minimal board space. Compared with commodity-type LDOs, the ADP172 provides 20 dB to 40 dB better power supply rejection ratio (PSRR) at 100 kHz, making the ADP172 an ideal power source for analog-to-digital converter (ADC) mixed-signal processor systems and allowing use of smaller size bypass capacitors. In addition, low output noise performance without the need for an additional bypass capacitor further reduces printed circuit board (PCB) component count.

Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP172 is available in a tiny 4-ball, 0.5 mm pitch WLCSP for the smallest footprint solution to meet a variety of portable power applications.


Applications
  • Mobile phones
  • Digital camera and audio devices
  • Portable and battery-powered equipment
  • DSP/FPGA/microprocessor supplies
  • Post dc-to-dc regulation

FEATURES and BENEFITS

  • Maximum output current: 300 mA
  • Input voltage range: 1.6 V to 3.6 V
  • Low quiescent current IGND = 23 μA with 0 mA load IGND = 170 μA with 300 mA load
  • Low shutdown current: <1 μA
  • Low dropout voltage: 50 mV at 300 mA load
  • Output voltage accuracy: ±1%
  • Up to 31 fixed-output voltage options available from 0.8 V to 3.0 V
  • Accuracy over line, load, and temperature: ±3%
  • Stable with small 1 μF ceramic output capacitor
  • PSRR performance of 70 dB at 10 kHz and 73 dB at 1 kHz
  • Low noise: 30 μV rms at VOUT = 0.8 V
  • Current limit and thermal overload protection
  • Logic-controlled enable
  • Tiny 4-ball, 0.5 mm pitch WLCSP package

Typical Application Circuit Diagram for ADP172

Documentation

Title Content Type File Type
ADP172: 300 mA, Low Quiescent Current, CMOS Linear Regulator Data Sheet (Rev E, 05/2014) (pdf, 572 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
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
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-053: RedyKit for the ADP172 LDO  (pdf, 133 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
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

ADP172 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP172ACBZ-0.9-R7 Status: Production CHIPS W/SOLDER BUMPS/WLCSP 4 Ind Reel, 3000 - $0.33 Y  Material Info Notify Me Purchase Sample
ADP172ACBZ-1.0-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN Purchase Sample
ADP172ACBZ-1.2-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN Purchase Sample
ADP172ACBZ-1.26-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN Purchase Sample
ADP172ACBZ-1.5-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN Purchase Sample
ADP172ACBZ-1.65-R7 Status: Production CHIPS W/SOLDER BUMPS/WLCSP 4 Ind Reel, 3000 - $0.33 Y  Material Info Notify Me Purchase Sample
ADP172ACBZ-1.7-R7 Status: Production CHIPS W/SOLDER BUMPS/WLCSP 4 Ind Reel, 3000 - $0.33 Y  Material Info Notify Me Purchase Sample
ADP172ACBZ-1.8-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN Purchase Sample
ADP172ACBZ-2.1-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN Purchase Sample
ADP172ACBZ-2.9-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN Purchase Sample
ADP172ACBZ-3.0-R7 Status: Production 4 ball WLCSP (1.02x.95) 4 Ind Reel, 3000 - $0.33 Y  Material Info PCN 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.


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