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MCP1725-3302E/MC

MCHPMCP1725-3302E/MC

Microchip Technology
LDO Voltage Regulators 500mA CMOS LDO Vout=3.3V
NRND2,201 in stock
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Overview

The MCP1725-3302E/MC is a 500mA low dropout (LDO) linear regulator that provides a stable 3.3V output from input voltages up to 6V. It features a Power Good output and an adjustable shutdown pin to manage power sequencing in complex digital systems. Designed for CMOS stability, it requires only a small ceramic output capacitor for reliable operation.

Why Choose This Part

This regulator offers an extremely low dropout voltage of 210mV at full load, maximizing efficiency in low-voltage systems. The integrated Power Good (PWRGD) pin simplifies system reset logic by monitoring the output voltage status. It is housed in a thermally enhanced DFN package, allowing for better heat dissipation in space-constrained layouts.

Applications

Microcontroller Power Rails
Providing clean 3.3V power to sensitive MCU cores and I/O pins in embedded designs.
Battery-Powered Portable Devices
Extending battery life in handheld electronics due to its low quiescent current and low dropout voltage.
Post-Regulation for Switching Supplies
Filtering high-frequency noise from DC-DC converters to provide a quiet rail for analog circuitry.
Digital Logic Level Shifting
Providing a secondary 3.3V rail from a 5V system bus for interfacing logic families.

Getting Started

When designing the PCB layout, place a 1uF ceramic capacitor as close as possible to the VIN and VOUT pins for stability. Ensure the thermal pad of the DFN package is soldered to a copper ground plane to manage heat at higher current loads. Use the SHDN pin to disable the device and reduce current draw to typical levels of 0.1uA during sleep modes.

MCP1725 Family

Part NumberDifferenceStock
MCP1725-3302E/SNVAO SNVAO 575

Also Consider

MCP1825S-3302E/DB MCHPMicrochip Technology - Offers a higher 500mA current limit in a SOT-223 package if a larger footprint for better thermals is preferred.