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    Parts    MCP1703T-3302E/DB
MCP1703T-3302E/DB

MCHPMCP1703T-3302E/DB

Microchip Technology
LDO Voltage Regulators Low Iq 250mA LDO Vin 16V maxVout 3.3V
NRND6,133 in stock
Datasheet Mouser Compare Prices

Overview

The MCP1703T-3302E/DB is a low dropout (LDO) voltage regulator capable of delivering up to 250mA of current with an extremely low quiescent current of 2.0 microamps. It supports an input voltage range up to 16V, making it ideal for applications powered by multi-cell alkaline or lithium-ion batteries. This specific variant provides a fixed 3.3V output in a SOT-223 package.

Why Choose This Part

The primary advantage is the ultra-low quiescent current which significantly reduces parasitic power loss in battery-operated systems. It also features a wide input voltage range up to 16V, allowing for significant headroom above the 3.3V output, and includes integrated overcurrent and overtemperature protection.

Applications

Battery-Powered Handhelds
Extends battery life in portable devices due to the ultra-low 2.0uA quiescent current when the system is in standby.
Smoke and CO Detectors
Provides stable power for long-term monitoring applications where minimal idle power consumption is critical.
Remote Sensor Nodes
Powers wireless sensors that spend most of their time in sleep mode, ensuring the regulator itself does not drain the energy source.

Getting Started

When designing the PCB layout, place a 1uF ceramic output capacitor as close as possible to the VOUT and GND pins to ensure stability. Use wide traces for the SOT-223 ground tab to help dissipate heat if the input-to-output voltage differential is high.

MCP1703 Family

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

Part Number PSRR Package Output I Temp Range Voltage Dropout (Max) Output V Stock
MCP1703T-3302E/DB (this part) — — — — — — 6,133
MCP1703T-5002E/CB 100Hz 3-236 250mA -40degC ~ 125degC 0.65V 5V 27,261
MCP1703A-5002E/DBVAO 100Hz 4-261 250mA -40degC ~ 125degC 0.65V 5V 1,858
MCP1703A-5002E/DB 100Hz 4-261 250mA -40degC ~ 125degC 0.65V 5V 1,506
MCP1703AT-3302E/MBVAO 100Hz TO-243AA 250mA -40degC ~ 125degC .. 0.525V 3.3V 555
MCP1703T-1802E/CB 100Hz 3-236 200mA -40degC ~ 125degC — 1.8V 22,744
MCP1703T-2502E/CB 100Hz 3-236 250mA -40degC ~ 125degC 1.1V 2.5V 5,701
MCP1703AT-3302E/CBVAO 100Hz 3-236 250mA -40degC ~ 125degC .. 0.725V 3.3V 2,447
MCP1703T-3302E/CB 100Hz 3-236 250mA -40degC ~ 125degC 0.725V 3.3V 25,069
MCP1703AT-3302E/DB 100Hz 4-261 250mA -40degC ~ 125degC .. 0.725V 3.3V 9,441
MCP1703-3302E/DB 100Hz 4-261 250mA -40degC ~ 125degC 0.725V 3.3V 3,892
Also available as: MCP1703AT-5002E/MBVAO, MCP1703AT-5002E/CBVAO

Also Consider

MCP1700T-3302E/TT MCHPMicrochip Technology - Similar low-Iq performance for lower input voltages (6V max) in a smaller SOT-23 footprint.