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A8181SLB

Allegro MicroSystems
Part Number A8181SLB
Manufacturer Allegro MicroSystems
Description LOW-DROPOUT/ 5 V REGULATOR . HIGH EFFICIENCY
Published Mar 23, 2005
Detailed Description 8181 LOW-DROPOUT, 5 V REGULATOR 8181 LOW-DROPOUT, 5 V REGULATOR — HIGH EFFICIENCY Especially suited for hand-held, por...
Datasheet PDF File A8181SLB PDF File

A8181SLB
A8181SLB


Overview
8181 LOW-DROPOUT, 5 V REGULATOR 8181 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.
A MOSFET pass element delivers high output current with an input-output differential of less than 300 mV.
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 complete 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 ENABLE ABSOLUTE MAXIMUM RATINGS at TA = +25°C Input Voltage, VI 10 V Output Current, IO (40% duty cycle) .
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1 A* (75% duty cycle) .
500 mA* (continuous) .
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370 mA* Operating Temperature Range, TA .
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-20°C to +85°C Junction Temperature, TJ .
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+150°C† Storage Temperature Range, TS .
-40°C to +150°C * Output current rating is limited by input voltage, duty cycle, and ambient t...


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