EmbeddedRelated.com
    Parts   Power Management  LDO Voltage Regulators    Microchip MCP1700 / MCP1825 LDO Family    MCP1702T    MCP1702T-3302E/CB
MCP1702T-3302E/CB

MCHPMCP1702T-3302E/CB

Microchip Technology
Linear Voltage Regulator IC Positive Fixed 1 Output 250mA SOT-23A-3
Active69,259 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The MCP1702T-3302E/CB is a CMOS low dropout (LDO) voltage regulator designed to provide a fixed 3.3V output at up to 250mA. It is characterized by an extremely low quiescent current of 2.0uA typical, making it suitable for battery-powered applications where standby power consumption is critical. The device supports an input voltage range up to 13.2V and is housed in a space-saving SOT-23A-3 package.

Why Choose This Part

The primary advantage is the exceptionally low quiescent current, which is significantly lower than many standard LDOs, extending battery life in dormant systems. It features integrated over-current and over-temperature protection, ensuring device reliability under fault conditions. The 13.2V maximum input allows for operation from a wide variety of power sources including 9V batteries and 12V automotive-style rails.

Applications

Battery-Powered Handheld Devices
Ideal for portable electronics requiring long battery life due to the ultra-low 2.0uA quiescent current.
Remote Sensors
Provides stable 3.3V power to low-power wireless sensor nodes and IoT endpoints.
Keep-Alive Power Supplies
Supplies power to RTCs and SRAM during system standby modes to maintain data without draining the primary battery.
Microcontroller Power
Supplies clean, regulated power to low-voltage MCUs from varied sources like Li-Ion batteries or 9V alkaline cells.

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) 13.2V
Voltage Dropout (Max) 0.725V @ 250mA
Supplier Device Package SOT-23A-3
Current - Quiescent (Iq) 5 uA
Voltage - Output (Min/Fixed) 3.3V

Getting Started

When designing with the MCP1702, ensure a minimum of 1uF ceramic or tantalum capacitance is used on the output for stability. Place the input and output capacitors as close to the SOT-23A pins as possible to minimize parasitic inductance. Since this is a linear regulator, calculate the power dissipation as (Vin - Vout) * Iout to ensure the SOT-23A package does not exceed thermal limits in your specific environment.

Also Consider

MCP1700T-3302E/TT MCHPMicrochip Technology - Lower 1.6uA quiescent current for even more power-sensitive applications, but with a lower maximum input voltage of 6.0V.
XC6206P332MR-G Torex Semiconductor - A highly popular low-power 3.3V LDO often used in cost-sensitive consumer electronics with a 1.0uA quiescent current.

Categories

Power Management > LDO Voltage Regulators