View lm2931a datasheet:

www.fairchildsemi.com LM2931A Low Dropout Voltage Regulator Features Description • Limited input voltage and high efficiency. LM2931A is a fixed 3-terminal low dropout voltage • Internal thermal over load protection. regulator designed to need very low quiescent current. • 60V load dump protection. Internally, implemented circuits include 60V load dump • Output current up to 0.1A. protection, -50V reverse transient short circuit and thermal over load protection. TO-92 1 1: Output 2: GND 3: Input Internal Block Diagram 0.6V MAX DROP PASS ELEMENT Input VI Output VO 3 1 OVER VOLTAGE CURRENT LIMIT PROTECTION START THERMAL SHUTDOWN REFERENCE VOLTAGE GND 2 Rev. 1.0.0 ©2001 Fairchild Semiconductor Corporation + _ LM2931A Absolute Maximum Ratings Paramet