The document describes the features and characteristics of the LD1085xx low drop positive voltage regulator, including low dropout voltage, adjustable or fixed output voltage, high output current, wide operating temperature range, etc.
The LD1085xx is a low‑dropout positive voltage regulator capable of delivering up to 3 A of output current. It offers adjustable or fixed output voltages (1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V) with a typical dropout of 1.3 V at full load and tight output tolerance (+1 % at 25 °C, +2 % over the full temperature range). The device is available in several TO‑220 and DPAK style packages and includes internal power and thermal limiting.
The manual contains a diagram, pin configuration, maximum ratings, schematic application, electrical characteristics, typical application circuit, mechanical data, order codes, and revision history. It also includes safety and warranty notices specific to ST products.
| Typical dropout voltage | 1.3 V at 3 A |
|---|---|
| Maximum output current | 3 A |
| Output voltage tolerance | +1 % at 25 °C, +2 % over full temperature range |
| Operating temperature range | -40 °C to 125 °C |
| Available packages | TO‑220, TO‑220FP, DPAK, DPAK/A, D2PAK |
The LD1085xx can deliver up to 3 A of output current.
The typical dropout voltage is 1.3 V when delivering 3 A.
It is available in TO‑220, TO‑220FP, DPAK, DPAK/A, and D2PAK packages.
The device operates from –40 °C to +125 °C.