The LM123, LM223, LM323 are three-terminal positive voltage regulators with a preset 5V output and a load driving capability of 3A. New circuit design and processing techniques are used to provide the high output current without sacrificing the regulation characteristics of lower current devices. The 3A regulator is virtually blowout proof. Current limiting, power limiting and thermal shut-down provide the same high level of reliability obtained with these techniques in the LM209, 1A regulator. An overall worst case specification for the combined effects of input voltage, load current, ambient temperature, and power dissipation ensure that the LM123, LM223, LM323 will perform satisfactorily as a system element.
The LM123, LM223, and LM323 series are three‑terminal positive voltage regulators that provide a fixed 5 V output and can drive loads up to 3 A. They incorporate internal current limiting, power limiting and thermal shutdown for reliable operation.
Typical applications include low‑dropout regulation in consumer and industrial circuits. The devices are offered in TO‑220 and TO‑3 packages, with detailed electrical characteristics, thermal data, and order codes provided in the datasheet. For more information, refer to STMicroelectronics' website.
| Output Current | 3 A |
|---|---|
| Minimum Input Voltage | 7.5 V |
| Power Dissipation | 30 W |
| Storage Temperature Range | -65 °C to 150 °C |
| Fixed Output Voltage | 5 V |
The devices can supply up to 3 A of output current.
They are offered in TO‑220 and TO‑3 packages.
A minimum input voltage of 7.5 V is required.
Power dissipation is internally limited to 30 W.