LM2940 IC 5.0 V – LDO Regulator DIP-3 LM2940

Product Overview

The LM2940-N and LM2940C are positive voltage regulators capable of sourcing 1 A of output current. They are characterized by a low dropout voltage (typically 0.5 V at 1 A) and include a quiescent current reduction circuit that lowers ground current when the input-to-output voltage differential exceeds approximately 3 V. These devices are robustly designed for applications such as vehicular electronics, where they offer protection against reverse battery installations and 2-battery jumps.

Core Specifications

• Manufacturer: Texas Instruments

• Function: 1 A Low Dropout (LDO) Regulator

• Output Current: Excess of 1 A

• Dropout Voltage: Typically 0.5 V at 1 A (1 V max over full temperature range)

• Input Voltage Range: 6 V to 26 V

• Protection Features: Reverse battery protection, internal short-circuit current limit, and mirror-image insertion protection

• Applications: Post-regulator for switching supplies, logic power supplies, and industrial instrumentation