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: 66 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
  • Adjustable-output voltage options
    0.8 V to 3.0 V (ADP171)
  • 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
  • See data sheet for additional features

Product Details

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 55 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 ADP170/ADP171/ADP172 ideal for battery-operated portable equipment.

TheADP170 is capable of 31 fixed-output voltage options, ranging from 0.8 V to 3.0 V. ADP171 is an adjustable version, which allows output voltages that range from 0.8 V to 3.0 V via an external divider. The ADP170/ADP171 are optimized for stable operation with small 1 μF ceramic output capacitors. Ideal for powering digital processors, the ADP170/ADP171 exhibit good transient performance and occupy minimal board space. Compared with commodity types of LDOs, the ADP170/ADP171 provide 20 dB to 40 dB better power supply rejection ratio (PSRR) at 100 kHz, making the ADP170/ADP171 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 ADP170/ADP171 are available in tiny 5-lead TSOT for the smallest footprint solution to meet a variety of portable power applications.

  • Mobile phones
  • Digital camera and audio devices
  • Portable and battery-powered equipment
  • DSP/FPGA/microprocessor supplies
  • Post dc-dc regulation
  • Product Lifecycle icon-recommended Production

    At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

    Evaluation Kits (1)

    Tools & Simulations

    Design Tools

    ADIsimPower™ Voltage Regulator Design Tool

    ADIsimPower is the fastest and most accurate Power Management design tool. ADI's Design Center lets you design your power circuits in three easy steps.

    ADI Linear Regulator Design Tool and Parametric Search

    Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.


    ADP171 Discussions

    RE: Working ADP171 and ADP1753 in current regulator.
    24 week(s) ago in Power By Linear
    ADP171 Didn't find what you were looking for? Ask the Analog community »

    Sample & Buy

    Sample & Buy functionality exists in desktop site
    Check Inventory

    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.

    Price Table Help


    Evaluation Boards Pricing displayed is based on 1-piece.
    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
    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.