This document describes the features and characteristics of LD1117xx adjustable and fixed low drop positive voltage regulators, including low dropout voltage, suitability for SCSI-2 active termination, output current up to 800 mA, fixed and adjustable output voltage options, internal current and thermal limit, etc.
The LD1117xx series is a low dropout voltage regulator capable of providing up to 800 mA of output current. It is available in both fixed output voltage versions (1.2 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V, and 2.85 V) and an adjustable version with a reference voltage of 1.25 V. The 2.85 V variant is specifically designed for SCSI-2 active termination applications.
| Output current | up to 800 mA |
|---|---|
| Dropout voltage | 1 V typ. |
| Supply voltage rejection | 75 dB typ. |
| DC input voltage (max) | 15 V |
| Power dissipation | 12 W |
| Operating junction temperature | 0 to +125 °C |
| Storage temperature | -40 to +150 °C |
Only a very common 10 uF minimum capacitor is needed for stability.
The 2.85 V type is ideal for SCSI-2 lines active termination.