The LD1117Axx is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (VREF = 1.25 V). In fixed versions, the following output voltages are offered: 1.2 V, 1.8 V, 2.5 V and 3.3 V. The device is supplied in: SOT-223, DPAK and TO-220. Surface mounted packages optimize the thermal characteristics while offering a relevant space saving advantage. High efficiency is assured by an NPN pass transistor. Only a very common 10 µF minimum capacitor is needed for stability. Chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2% at 25 °C.
The LD1117AXX series consists of low dropout voltage regulators capable of providing up to 1 A of output current. Available in fixed output versions (1.2V, 1.8V, 2.5V, 3.3V) and adjustable versions, these devices feature a very low dropout voltage of 1.15 V typical at 1 A. The series is supplied in SOT-223, DPAK, and TO-220 packages, optimizing thermal characteristics and space saving.
| Output current | 1 A |
|---|---|
| Dropout voltage | 1.15 V typ. |
| Quiescent current | 5 mA typ. |
| Supply voltage rejection | 80 dB typ. |
| Operating temperature range | 0 °C to 125 °C |
| Output voltage tolerance | + 2% at 25 °C |
| Minimum input capacitor | 10 uF |
The fixed versions offer output voltages of 1.2 V, 1.8 V, 2.5 V and 3.3 V.
The device is able to provide up to 1 A of output current.
The device is supplied in SOT-223, DPAK and TO-220 packages.