LOW-DROPOUT/ 3 V REGULATOR - Allegro MicroSystems
Description
8183
LOW-DROPOUT,
8183
LOW-DROPOUT, 3 V REGULATOR 3 V REGULA— HIGH EFFICIENCY
Designed specifically to meet the requirement for extended operation of battery-powered equipment such as cordless and cellular telephones, the A8183SLU 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 V output at up to 75 mA under normal operating conditions, or to 150 mA (transient) under worst-case conditions.
Data Sheet 27468.
4
OUT
SUB
IN
TOR
6
5 SUB
4
VR
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.
D E N U RE N E I T F N E O R C R S I O D F —
1 2 3
SUB
GND
ENABLE
SUB
A PMOS pass element provides a typical dropout voltage of only 90 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.
P
O R
D
3V
U
T C N
E C
O
Y L
Dwg.
PS-021
This device is supplied in a 6-lead small-outline plastic package (similar to the SOT-89/TO-243AA) for surface-mount applications.
The A8183SLU is rated for operation over a temperature range o...
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