LD1117 is a low dropout voltage regulator capable of providing up to 800mA of output current. An adjustable version is available with a reference voltage of 1.25V. The fixed versions offer the following output voltages: 1.2V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, and 5.0V. The 2.85V version is ideal for SCSI-2 lines active termination. The LD1117 is available in SOT-223, DPAK, SO-8, TO-220, and TO-220FM packages. The SOT-223 and DPAK surface mount packages optimize the thermal characteristics and provide space-saving benefits. High efficiency is ensured by an NPN pass transistor. Only a common minimum 10μF capacitor is required for stability. On-chip trimming allows the regulator to achieve a very tight output voltage tolerance of ±1% at 25°C. The adjustable LD1117 is pin-to-pin compatible with other standard adjustable voltage regulators and maintains superior performance in terms of dropout and tolerance.
The LD1117 series are low‑dropout positive voltage regulators offering up to 800 mA of output current. Fixed versions provide 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 is available with a reference voltage of 1.25 V.
The devices are supplied in several packages (SOT‑223, DPAK, SO‑8, TO‑220) and feature low quiescent current, high supply‑voltage rejection (75 dB typ.) and a typical dropout voltage of about 1 V. Detailed electrical characteristics, absolute maximum ratings and thermal data are provided in the tables.
| 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 |
| Maximum Input Voltage | 15 V |
| Supply Voltage Rejection (typ.) | 75 dB |
The LD1117 can deliver up to 800 mA of output current.
Fixed versions are offered with 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.0 V, 3.3 V and 5.0 V outputs.
The device is available in SOT‑223, DPAK, SO‑8 and TO‑220 packages.
Typical supply‑voltage rejection is 75 dB.