LM2990SX-12 - Texas Instruments

Manufacturer Part Number

LM2990SX-12

Manufacturer

Texas Instruments

Introduction

The LM2990SX-12 is a negative, fixed output, low drop-out (LDO) voltage regulator specifically designed for power management applications. It is part of Texas Instruments' extensive range of power management integrated circuits, featuring robust power regulation with minimal voltage drop.

Product Features and Performance

Negative output voltage regulator with a fixed -12V output

Low drop-out voltage of 1V @ 1A load

Output current capability of 1.8A, suitable for high-power applications

Low quiescent current of 1 mA, enhancing power efficiency

High PSRR of 52dB at 1kHz, providing stable output under varying input conditions

Incorporates over temperature and short circuit protection for increased reliability and safety

Product Advantages

High current output and low dropout make it ideal for demanding applications

Low quiescent current contributes to energy efficiency

Advanced protection features ensure long-term reliability

Suitable for negative voltage applications

Key Technical Parameters

Voltage Input (Max): -26V

Voltage Output (Min/Fixed): -12V

Current Output: 1.8A

Voltage Dropout (Max): 1V @ 1A

Current Quiescent (Iq): 1 mA

PSRR: 52dB (1kHz)

Operating Temperature: -40°C ~ 125°C

Quality and Safety Features

Over Temperature Protection

Short Circuit Protection

Compatibility

Surface Mount TO-263-4, D2PAK (3 Leads + Tab), TO-263AA package for versatile PCB designs

Application Areas

Negative voltage applications

High-power electronics

Industrial power supplies

Automotive systems

Renewable energy systems

Product Lifecycle

Product Status: Last Time Buy, indicating the approach towards the end of its production life

Availability of replacements or upgrades should be checked with Texas Instruments

Several Key Reasons to Choose This Product

High output current capability suitable for demanding applications

Excellent power supply rejection ratio (PSRR) ensuring stable operation

Low dropout voltage facilitates efficient use of power

Comprehensive protection features safeguard the regulator and connected components

Negative output voltage provision expands its application range

Covered by Texas Instruments' reliability and support, despite nearing end of life