The LP2981 is a 100 mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. Using an optimized VIP™ (Vertically Integrated PNP) pro- cess, the LP2981 delivers unequaled performance in all specifications critical to battery-powered designs: Dropout Voltage. Typically 200 mV @ 100 mA load, and 7 mV @ 1 mA load. Ground Pin Current. Typically 600 µA @ 100 mA load, and 80 µA @ 1 mA load. Sleep Mode. Less than 1 µA quiescent current when ON/ OFF pin is pulled low. Smallest Possible Size. SOT-23 and micro SMD packages use an absolute minimum board space. Precision Output. 0.75% tolerance output voltages avail- able (A grade). Eleven voltage options, from 2.5V to 5.0V, are available as standard products.
The LP2981 is a fixed‑output voltage regulator designed for battery‑powered applications. It provides ultra low dropout voltage, precise output, and minimal ground‑pin current, making it suitable for portable devices such as cellular phones, PDAs, and camcorders.
Key features include a typical dropout of 200 mV at 100 mA, ground‑pin current as low as 80 pA at 1 mA, sleep‑mode quiescent current under 1 µA, and eleven selectable output voltages from 2.5 V to 5.0 V. The device is offered in SOT‑23 and micro‑SMD packages and can deliver up to 100 mA continuous load.
| Output Voltage Options | 2.5 V to 5.0 V (eleven options) |
|---|---|
| Dropout Voltage | 200 mV @100 mA, 7 mV @1 mA |
| Ground Pin Current | 600 pA @100 mA, 80 pA @1 mA |
| Maximum Output Current | 100 mA |
The typical dropout voltage is 200 mV at a 100 mA load.
The ground pin current is typically 80 pA at a 1 mA load.
Eleven fixed output voltage options are available, ranging from 2.5 V to 5.0 V.