A8181 Datasheet PDF - Allegro MicroSystems

LOW-DROPOUT, 5 V REGULATOR — HIGH EFFICIENCY

Especially suited for hand-held, portable, battery-operated equipment such as cellular telephones, the A8181SLB low dropout voltage regulator provides high efficiency for maximum battery life in a minimum package size. Equally applicable to camcorders and portable computers, the device provides a fixed 5 V regulated continuous output at almost 200 mA of load current under worst-case conditions. Under normal operating conditions, output currents over 500 mA are permitted.

FEATURES AND BENEFITS
■ High Efficiency Provides Extended Battery Life
■ Less Than 300 mV Dropout Voltage
■ Low Quiescent Current
■ >200 mA Output Current
■ LSTTL-Compatible ON/OFF Control
    For Sequential Power-up or Emergency Shutdown
■ Internal Thermal Protection
■ SOIC Surface-Mount Package