LD1117 series is a low dropout linear voltage regulator, providing 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V and 5.0 V multiple fixed output voltages, and also providing 1.25 V adjustable output voltage version. This device has high efficiency, high reliability and high stability, which is suitable for various electronic equipment.
The LD1117 series are low‑dropout linear regulators that deliver up to 800 mA of output current. Fixed versions are offered with output voltages of 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V and 5.0 V, while an adjustable version provides a reference of 1.25 V. The devices are available in SOT‑223, DPAK, SO‑8 and TO‑220 packages, allowing flexible board‑level integration.
Key electrical characteristics include a typical dropout voltage of 1 V, a supply‑voltage rejection of 75 dB, and an input voltage rating of 15 V. Maximum power dissipation is 12 W and the parts operate over a storage temperature range of –40 °C to +150 °C. Thermal resistance values differ by package, ensuring reliable operation in a variety of applications such as SCSI‑2 termination, battery‑backed supplies, and general low‑noise regulation.
| Dropout voltage (typical) | 1 V |
|---|---|
| Maximum output current | 800 mA |
| Fixed output voltages | 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V, 5.0 V |
| Adjustable reference voltage | 1.25 V |
| Supply voltage rejection | 75 dB (typ.) |
| Maximum input voltage | 15 V |
| Maximum power dissipation | 12 W |
| Storage temperature range | -40 °C to +150 °C |
| Thermal resistance (junction‑case) SOT‑223 | 15 °C/W |
| Available packages | SOT‑223, DPAK, SO‑8, TO‑220 |
The LD1117 can deliver up to 800 mA of output current.
Fixed versions are available at 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V and 5.0 V.
The typical dropout voltage is 1 V.
It is supplied in SOT‑223, DPAK, SO‑8 and TO‑220 packages.