8181 Datasheet | Allegro MicroSystems

LOW-DROPOUT, 5 V REGULATOR 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 puters, the device provides a fixed 5 V regulated continuous output at almost 200 m A of load current under worst-case conditions. Under normal operating conditions, output currents over 500 m A are permitted. A MOSFET pass element delivers high output current with an input-output differential of less than 300 m V. For high efficiency, the low dropout voltage allows a longer battery discharge before output voltage regulation is lost. A low quiescent current, even during high load conditions, makes the device ideal for standby power systems. High regulator accuracy and excellent temperature characteristics are provided by a bandgap reference. An enable input gives the designer plete control over sequential power-up or emergency shutdown. This device is supplied in a 16-lead wide-body, small-outline plastic power package (SOIC) for surface-mount applications. The copper batwing provides for maximum package power dissipation in the smallest possible construction. The A8181SLB is rated for operation over a temperature range of -20°C to +85°C. Data Sheet 27468- GROUND GROUND...