The LP2981 is a 100 mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. It uses an optimized VIP™ (Vertically Integrated PNP) process to deliver unmatched 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 available (A grade). Eleven voltage options, from 2.5V to 5.0V, are available as standard products.
The LP2981 is a 100 mA fixed‑output voltage regulator designed for battery‑powered applications. It features an ultra‑low dropout voltage, 0.75 % output tolerance, and a sleep‑mode quiescent current of less than 1 µA. The device is offered in SOT‑23 and micro‑SMD (BPA05) packages, providing a compact footprint.
The document includes ordering information for multiple voltage grades, absolute maximum ratings, detailed electrical characteristics, typical performance curves, and physical dimensions. Applications listed include cellular phones, PDAs, camcorders, and other portable electronics.
| Dropout Voltage (typical) | 200 mV @ 100 mA load |
|---|---|
| Ground Pin Current (typical) | 600 pA @ 100 mA load |
| Output Voltage Accuracy | 0.75 % tolerance (A grade) |
| Maximum Output Current | 100 mA (guaranteed) |
| Supply Voltage Range | Up to 16 V |
| Operating Temperature Range | -40 °C to +125 °C |
| Package Types | SOT‑23 and micro‑SMD (BPA05) |
The typical dropout voltage is 200 mV at a 100 mA load.
The regulator provides a 0.75 % tolerance output voltage (A‑grade).
The LP2981 guarantees a maximum output current of 100 mA.