HT1087 series 0.5A general purpose LDO selection table, including adjustable output voltage and fixed output voltage two types, output voltage range is 1.5V~5.0V, with high accuracy, low voltage drop, low quiescent current and other features.
The HT1087 series are three‑terminal, high‑current LDO regulators capable of delivering up to 0.5 A with input voltages up to 12 V. They are offered in fixed output versions (1.5 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V) and an adjustable version, packaged in SOT‑89 or TO‑92.
Key specifications include a typical dropout voltage of 1.1 V at 5 V output, low quiescent current (8 mA typ.), integrated current‑limit and thermal‑protection circuits, and line/load regulation of 0.015 V/V and 20 mV respectively. Typical applications are active SCSI terminations, post‑regulation for switching supplies, and powering low‑voltage microcontrollers.
| Maximum output current | 0.5 A |
|---|---|
| Input voltage range | 0.3 V to 12 V |
| Fixed output voltage options | 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V |
| Typical dropout voltage (5 V out) | 1.1 V typ. |
| Quiescent current | 8 mA typ. |
| Thermal resistance (TO‑92) | 200 °C/W |
| Power dissipation (TO‑92) | 0.5 W |
The HT1087 regulators can deliver up to 0.5 A of output current.
The device operates with input voltages from 0.3 V up to 12 V.
The typical dropout voltage is about 1.1 V when delivering 5 V output at 0.5 A.
Fixed output versions are available at 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V.