Texas Instruments LM2940T-10.0 1A Low Dropout Voltage Regulator 10V

The Texas Instruments LM2940T-10.0 Voltage Regulator delivers a stable 10V output at up to 1A, with a low dropout voltage suited to applications where the input voltage is close to the desired output level.

Overview

This positive voltage regulator provides a consistent 1A of output current. The dropout voltage is typically 0.5V at full load and does not exceed 1V across the operating temperature range, supporting efficient operation when input and output voltages are closely matched.

Efficiency

An intelligent quiescent current reduction circuit reduces ground current when the difference between input and output voltage exceeds approximately 3V. With a 5V input-output differential and a 1A load, the quiescent current is 30mA. Higher currents occur only when the device is in dropout mode, conserving power under normal operating conditions.

Key Features

• Reverse battery protection against damage from accidental polarity reversal
• Internal short-circuit current limit for protection against overloads
• Mirror image insertion protection to help prevent damage if the device is incorrectly installed in its socket
• Output voltage precisely trimmed during manufacturing before final assembly

Package and Operation

The regulator is housed in a TO-220 through-hole package with 3 pins, designed for easy mounting onto printed circuit boards. It operates across a temperature range from -40°C to 125°C, suiting it for industrial and automotive environments.

The combination of 1A output current, low dropout voltage, and built-in protection features makes this 10V 1A low dropout regulator a practical choice for circuits requiring a stable 10V supply.