NATIONAL SEMICONDUCTOR LP2982 Micropower 50mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages
Summary
This ultra low-dropout regulator is engineered for miniature, battery-powered devices requiring highly reliable power management and minimal board space. Delivering stable 50 mA output while maintaining extremely low dropout voltages, it is ideal for personal electronics such as PDAs, cameras, and handheld computing devices. The manual provides critical technical specifications, application circuits, and comprehensive ordering details to ensure optimal performance in constrained systems.
Manual Details
| Brand | National |
|---|---|
| Pages | 17 |
| File Size | 863.22 KB |
| Published | June 17, 2026 |
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Frequently Asked Questions
What is the typical dropout voltage for this regulator?
The typical dropout voltage is 120 mV at a 50 mA load, and also noted to be typically 180 mV @ 80 mA.
Is an external capacitor necessary for operation?
Yes, using a bypass capacitor is recommended, especially for low noise operation, although minimum capacitance is required for stability.
What are the available output voltage options?
Ten output voltage versions are available, ranging from 2.5V to 5.0V (A grade).
What is the operating temperature range of the LP2982?
The junction temperature range is provided for operation between -40°C to +125°C.