MCHPMCP1700-3302E/TO

Overview

The MCP1700-3302E/TO is a 3.3 V linear low-dropout (LDO) regulator from Microchip rated for up to 250 mA output with an ultra-low quiescent current of 1.6 uA. It is supplied in a TO-92 through-hole package, making it convenient for breadboard and prototyping use. The part is commonly chosen for battery-powered or low-standby-current applications.

Why Choose This Part

Very low quiescent current (1.6 uA) makes this regulator well suited to long-life battery applications where idle current dominates. The 250 mA output capability covers many microcontrollers, sensors, and small radios while the TO-92 package simplifies through-hole prototyping and repair. The MCP1700 family is widely available and requires only a small number of external components for use.

Applications

Getting Started

There is no IDE or toolchain required for this passive regulator; get started by wiring it on a breadboard or perf board in the TO-92 orientation, and add the recommended input and output decoupling capacitors per the datasheet. Use a bench power supply and multimeter to verify output voltage and check for heating at your intended load. Because it is a linear regulator, watch power dissipation when dropping from higher input voltages at higher loads.

MCP1700 Family

Comparing specs that differ across variants. The current part is highlighted.

Also Consider

AMS1117-3.3 Various - Widely available 3.3 V linear regulator option with higher output current capability.

LD1117V33 STMicroelectronics - Common 3.3 V LDO family used where more output current is needed.

TLV70033 TITexas Instruments - TI 3.3 V LDO family as an alternative from a large vendor with multiple package options.

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