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    Parts    MCP1703T-5002E/CB
MCP1703T-5002E/CB

MCHPMCP1703T-5002E/CB

Microchip Technology
Linear Voltage Regulator IC Positive Fixed 1 Output 250mA SOT-23A-3
Active27,261 in stock
Datasheet Digi-Key Compare Prices

Overview

The MCP1703T-5002E/CB is a CMOS low dropout (LDO) voltage regulator that delivers up to 250mA of current while consuming only 2.0uA of quiescent current. It operates with an input voltage up to 16V, making it suitable for applications using multi-cell Li-Ion batteries or 12V power rails. The device is designed to maintain stability with just 1uF of ceramic output capacitance.

Why Choose This Part

The primary advantage is the ultra-low quiescent current of 2.0uA, which significantly reduces parasitic drain in idle states. It features integrated over-temperature and short-circuit protection, ensuring robustness in a compact SOT-23A package.

Applications

Battery-Powered IoT Sensors
Extends battery life in remote sensors due to the extremely low 2.0uA standby current.
Keep-Alive Power Supplies
Ideal for powering real-time clocks (RTCs) or SRAM memory during system standby modes.
Handheld Medical Instruments
Provides a stable 5V rail for portable diagnostics where PCB space is limited.

Key Specifications

PSRR 44dB (100Hz)
Output Type Fixed
Mounting Type Surface Mount
Package / Case TO-236-3, SC-59, SOT-23-3
Current - Output 250mA
Protection Features Over Current, Over Temperature, Short Circuit
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC
Voltage - Input (Max) 16V
Voltage Dropout (Max) 0.65V @ 250mA
Supplier Device Package SOT-23A-3
Current - Quiescent (Iq) 5 uA
Voltage - Output (Min/Fixed) 5V

Getting Started

To implement this LDO, place a 1uF ceramic capacitor close to both the input and output pins for stability. Ensure the input voltage stays below the 16V maximum rating and account for the 0.65V dropout voltage when calculating the minimum operating voltage at full 250mA load.

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-5002E/CB (this part) 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, MCP1703T-3302E/DB

Also Consider

MCP1700T-5002E/TT MCHPMicrochip Technology - Offers an even lower 1.6uA quiescent current but is limited to a maximum input voltage of 6V.