LP3981IMMX-3.3 - Texas Instruments

Manufacturer Part Number

LP3981IMMX-3.3

Manufacturer

Texas Instruments

Introduction

LP3981IMMX-3.3 is a low-dropout (LDO) linear voltage regulator ideal for applications requiring a regulated output of 3.3V with an input voltage up to 6V.

Product Features and Performance

Fixed output voltage of 3.3V

Maximum input voltage of 6V

Dropout voltage of 0.2V at 300mA load

Output current capacity of 300mA

Quiescent current of 120 µA

Supply current of 210 µA

Power supply rejection ratio (PSRR) of 50dB to 55dB between 1kHz and 10kHz

Control features include Enable function

Protection features against overcurrent, overtemperature, and short circuit

Product Advantages

High efficiency due to low dropout voltage

Minimal power loss

Compact size suitable for surface mounting

Robust protection features enhance device reliability

Key Technical Parameters

Voltage - Input (Max): 6V

Voltage - Output (Min/Fixed): 3.3V

Current - Output: 300mA

Voltage Dropout (Max): 0.2V @ 300mA

Current - Quiescent (Iq): 120 µA

PSRR: 50dB - 55dB (1kHz - 10kHz)

Quality and Safety Features

Overcurrent protection

Overtemperature protection

Short circuit protection

Operates effectively from -40°C to 125°C

Compatibility

Compatible with surface mount technology

Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Application Areas

Suitable for powering sensors, microcontrollers, and other low-voltage digital circuits in various electronic applications

Product Lifecycle

Obsolete

Limited availability with no direct replacements or upgrades

Several Key Reasons to Choose This Product

Efficient power management with low dropout voltage

Robust built-in protection mechanisms ensuring device longevity

Ultra-low quiescent current suitable for battery-operated devices

Optimal performance in a wide range of operating temperatures

Compact and compatible design for easy integration into various circuit layouts