STMicroelectronicsL78M05ABDT-TR Precision Linear RegulatorLinear Regulators

The 7805 range of 5V regulators are an industry workhorse but the L78M05ABDT-TR takes the 7805 further. With an impressive wide temperature range of -40°C to 125°C the precision regulator can supply up to 500mA, have a typical drop-out voltage of 2V (at 350mA) and an output voltage tolerance of 2%. With thermal overload protection and short circuit protection built-in, the L78M05ABDT-TR is a great choice of linear 5 V regulator that is reliable, with years of proven track record in the industry. While a fixed regulator, external components can be used to provide different output voltages and with additional circuitry, the L78M05 can be used for a wide range of circuits including AM modulated power.

Drawings / Package

Key Features

• Fixed 5V output and output current up to 0.5A

• Wide temperature range from –40°C to 125°C

• 2% output tolerance

• Multiple inbuilt protections

  • Thermal overload

  • Short circuit

• Drop-out voltage up to 2V

• Line regulation up to 100mV

General Applications

• Power regulation for microcontrollers

• Power regulation in power supplies both fixed and adjustable

• Power AM modulation

• Hardware compatible as direct replacement for older 7805 parts

Evaluation Board

There is no evaluation board for the L78M05ABDT-TR.  There are plenty of example circuits in the datasheet.

L78M05ABDT-TR Precision Linear Regulator by STMicroelectronics

Use the standard L78M05ABDT-TR linear regulator from STMicroelectronics to maintain a constant output voltage. It has an overall accuracy of ±2 %. Its typical dropout voltage at current is 2@350mA V. This voltage regulation device's single output can produce a current up to 0.5 A. This will operate at a maximum voltage of 35 V, making it easy to control the power in your circuit. With a fixed output that has a voltage of 5 V, this is power management at its best. To produce a constant current at your output, supply your circuit with a load regulation of 100mV and line regulation of 100mV. This product will be shipped in tape and reel packaging to allow for quick mounting and safe delivery. Its polarity is positive. This voltage regulation device has a minimum operating temperature of -40 °C and a maximum of 125 °C.