LOW-DROPOUT/ 3.3 V REGULATOR - Allegro MicroSystems
Description
8186 LOW-DROPOUT, 3.
3 V REGULATOR
8186
LOW-DROPOUT, 3.
3 V REGULATOR — HIGH EFFICIENCY
Designed specifically to meet the requirement for extended operation of battery-powered equipment such as cordless and cellular telephones, the A8186SLU voltage regulator offers the reduced dropout voltage and quiescent current essential for maximum battery life.
Applicable also to palmtop computers and personal data assistants, the device delivers a regulated, continuous 3.
3 V output at up to 75 mA under normal operating conditions, or to 150 mA (transient) under worst-case conditions.
A PMOS pass element provides a typical dropout voltage of only 85 mV at 60 mA of load current.
The low dropout voltage permits deeper battery discharge before output regulation is lost.
Furthermore, quiescent current does not increase as the dropout voltage is approached, an ideal feature in standby/resume power systems where data integrity is crucial.
Regulator accuracy and excellent temperature characteristics are provided by a bandgap reference.
An ENABLE input gives the designer complete control over power up, standby, or power down.
Data Sheet 27468.
14
PRELIMINARY INFORMATION
(subject to change without notice)
ABSOLUTE MAXIMUM RATINGS
Input Voltage, VI .
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10 V Output Current, IO .
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150 mA* Enable Input Voltage, VE .
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VI 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 .
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-40°C to +150°C
* Output current rating is limited by input voltage, duty cycle, and ambient temperature.
Under any set of conditions, do not exceed a junction temperature of +150° C.
See next page.
† Fault conditions that produce excessive junction temperature will activate device thermal shutdown circuitry.
These conditions can be tolerated but should be avoided.
T C U Y D L O N R O P E D C E N U E N ER I T F N E O R C S OR I D F —
OUT SUB
January 12...
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