LP3981ILD-3.3 - Texas Instruments

Manufacturer Part Number

LP3981ILD-3.3

Manufacturer

Texas Instruments

Introduction

The LP3981ILD-3.3 is a low dropout regulator designed for power-sensitive applications.

Product Features and Performance

Low Dropout (LDO) linear voltage regulation

Fixed 3.3V output voltage

Supports up to 300mA output current

High PSRR of 50dB ~ 55dB (1kHz ~ 10kHz)

Low quiescent current of 120 µA

Enable control feature for power management

Product Advantages

High stability for sensitive applications

Optimized for low-power operation

High power supply rejection ratio for noise-sensitive circuits

Key Technical Parameters

Output Voltage (Min/Fixed): 3.3V

Input Voltage (Max): 6V

Voltage Dropout (Max): 0.2V @ 300mA

Current - Output: 300mA

Current - Quiescent (Iq): 120 µA

Power Supply Rejection Ratio (PSRR): 50dB ~ 55dB (1kHz ~ 10kHz)

Number of Regulators: 1

Quality and Safety Features

Overcurrent protection

Over-temperature protection

Short circuit protection

Compatibility

Surface Mount compatible

6-WDFN Exposed Pad (6-WSON (3x4) package)

Application Areas

Ideal for battery-operated devices

Suitable for mobile phones and portable electronics

Product Lifecycle

Obsolete - consider availability of last-time buys or alternative solutions

Several Key Reasons to Choose This Product

Low dropout improves efficiency

Extended operational temperature range from -40°C to 125°C

High PSRR for stable output in noisy environments

Small form factor suitable for compact electronic assemblies

Integrated protection features for enhanced safety and reliability