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MCP1702: 250 mA Low Quiescent Current LDO Regulator

MCP1702 is low dropout voltage regulator that can deliver up to 250 mA of current while consuming only 2.0 µA of quiescent current and it has a low dropout voltage of 650mV. The input operating range for MCP1702 is from 2.7V to 13.2V and output voltage range from 1.2V to 5V.


Pin Configuration

       pin no.           Pin Name                                Description
          1              GND                               Ground Pin
          2               Vin                       Regulated Voltage Input
          3              Vout                       Regulated Voltage Output



  • Input Supply Voltage: 2.7V to 13V
  • Output Voltage: 1.2 V to 5V 
  • Continuous Output Current: 250 mA
  • Drop-out Voltage: 625 mV at 250 mA
  • Quiescent Current: 2.0 µA
  • Available in SOT-23A, SOT-89-3, and TO-92  Packages


Note: The Complete Technical Details can be found at the datasheet given at the end of this page.


Equivalent for MCP1702: MCP1703, MCP1825, LM317

Alternative LDO Regulators: AMS1117, MIC5225, MIC5205


MCP1702 Introduction

The MCP1702 is a Low Drop Out voltage regulator from Microchip.  It is a family of CMOS low dropout (LDO) voltage regulators that is capable of regulating voltage efficiently with a low voltage drop of 625mV and can provide output voltage almost close to the input voltage. The output voltage tolerance of the MCP1702 is typically ±0.4% at +25°C and ±3% maximum over the operating junction temperature range of -40°C to +125°C. Line regulation is ±0.1% typical at +25°C and Load regulation is ±1.0. MCP1702 is generally used in Battery-powered Devices.


How to use the MCP1702

MCP1702 low dropout regulator comes in 3-pin package. It is most commonly used as a voltage regulator. Its low quiescent current and low dropout voltage makes it ideal for many battery-powered applications. Using MCP1702 as a voltage regulator is pretty simple. Connect the Vin pin to the power source and GND pin to ground. The regulated output can be obtained at the Vout pin. Output voltage range for MCP1702 is 1.2V to 5V. 1µf ceramic capacitor is used for LDO output stability.

Application Circuit Diagram of MCP1702-250 mA Low Quiescent Current LDO Regulator


  • Battery-powered Devices
  • Battery-powered Alarm Circuits
  • Smoke Detectors
  • Pagers and Cellular Phones
  • Smart Battery Packs
  • Low Quiescent Current Voltage Reference
  • Digital Cameras
  • Microcontroller Power
  • Solar-Powered Instruments


2D-Model (TO-92)

2D Model Of MCP1702-250 mA Low Quiescent Current LDO Regulator


Component Datasheet

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