Texas Instruments Fixed 5V 800mA LDO Voltage Regulator SOT-223

The Texas Instruments Fixed 5V LDO Voltage Regulator delivers a stable 5 V output at up to 800 mA from an input voltage of up to 15 V.

Overview

This low dropout (LDO) linear voltage regulator is designed to provide a regulated 5 V output for powering sensitive circuits. With a typical dropout voltage of 1.2 V at 800 mA, it suits applications where minimising voltage headroom is important. Output accuracy is within a tolerance of ±1%, supported by a precision Zener trimmed band gap reference.

Protection and Stability

Integrated current limiting and thermal shutdown help protect the device and the application from overloads and excessive temperatures. For optimal performance, a minimum of 10 µF tantalum capacitor is required at the output. This non-ceramic capacitor is recommended to enhance transient response and support long-term stability.

Key Features

• Fixed 5 V output with a stable 5.0 V DC supply
• Maximum continuous output current of 800 mA
• Typical dropout voltage of 1.2 V at full load (800 mA)
• Line regulation of 0.2% maximum and load regulation of 0.4%
• Output noise of 75 µVrms
• Industry-standard pin-out, the same as the LM317
• Surface-mount SOT-223-3 package

Applications

Suited to power management applications, including powering sensitive circuits and analogue and digital circuits that are sensitive to electrical interference. The compact SOT-223-3 surface-mount package suits space-constrained PCB designs. Choose this fixed 5 V LDO voltage regulator for a stable supply in designs that require low dropout and low output noise.