HA178M00 series 3-terminal fixed voltage regulators have the following features: output current less than 500 mA, various output voltages (5, 6, 7, 8, 9, 12, 15, 18, 20 and 24 V), no external compensation circuit required, built-in current control circuit to protect elements from short circuit damage, built-in chip junction temperature limiting circuit to protect elements from thermal damage, built-in internal power dissipation limiting circuit to protect transistors in output stage.
The HA178M00 series are 3‑terminal fixed voltage regulators offering output voltages from 5 V to 24 V and a maximum output current of less than 500 mA. The document lists features such as built‑in current control, junction‑temperature limiting and power‑dissipation limiting circuits, making the devices suitable for automotive, industrial and commercial applications.
Key electrical characteristics include absolute maximum ratings, typical output voltage values, line and load regulation, dropout voltage, and thermal resistance. The manual also contains ordering information, pin arrangement, package dimensions and extensive cautions regarding product use and intellectual‑property rights.
| Maximum output current | < 500 mA |
|---|---|
| Available output voltages | 5 V – 24 V |
| Power dissipation | 75 W |
| Operating temperature range | -20 °C to +75 °C |
| Junction temperature range | -20 °C to +125 °C |
| Thermal resistance (junction‑to‑case) | 3.0 °C/W typ, 5.0 °C/W max |
| Dropout voltage | 2.0 V |
| Peak output current | 700 mA |
The regulators can supply less than 500 mA of output current.
The device operates from –20 °C up to +75 °C.