HIGH EFFICIENCY. 8183 Datasheet
LOW-DROPOUT/ 3 V REGULATOR . HIGH EFFICIENCY
|Total Page||8 Pages|
LOW-DROPOUT, 3 V REGULATOR
— HIGH E3 FVFRIECGIUELNA-CY
Designed specifically to meet the requirement for extended opera-
CT6 5 4
NTI EFEABSOLUTE MAXIMUM RATINGS
O RInput Voltage, VI . . . . . . . . . . . . . . 10 V
COutput Current, IO . . . . . . . . . 150 mA*
S REnable Input Voltage, VE . . . . . . . . . . VI
Operating Temperature Range,
I OTA . . . . . . . . . . . . . -20°C to +85°C
D FJunction Temperature, TJ . . . +150°C†
Storage Temperature Range,
TS . . . . . . . . . . . . -40°C to +150°C
—* Output current rating is limited by input voltage,
tion 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
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 ap-
proached, 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
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 of -20°C to
FEATURES AND BENEFITS
s High Efficiency Provides Extended Battery Life
s 90 mV Typical Dropout Voltage at IO = 60 mA
s 45 µA Typical Quiescent Current at VI = 6 V
Less Than 1 µA “Sleep” Current
s Up to 150 mA Output Current
s CMOS-Compatible ON/OFF Control
For Power-Up, Standby, or Shutdown
s Internal Thermal Protection
s Surface-Mount Package
duty cycle, and ambient temperature. Under
any set of conditions, do not exceed a junction
s Cordless and Cellular Telephones
temperature of +150°C. See next page.
s Personal Data Assistants
† Fault conditions that produce excessive junction
temperature will activate device thermal
shutdown circuitry. These conditions can be
tolerated but should be avoided.
s Personal Communicators
s Palmtop Computers
Always order by complete part number: A8183SLU .
3 V REGULATOR
FUNCTIONAL BLOCK DIAGRAM
Terminal numbering is in accordance with EIA/JEDEC convention.
Where EIAJ conventions apply, the tab is not numbered, resulting in
terminal 6 being designated terminal 5.
For proper operation, terminals 1 and 2 must be externally con-
MAXIMUM ALLOWABLE OUTPUT CURRENT with device mounted on 2.24" x 2.24"
(56.9 mm x 56.9 mm) solder-coated copper-clad board in still air.
Maximum Allowable Output Current in Milliamperes with VI = 8 V, TJ = 150°C, Period ≤10 s*
dc (Duty Cycle)
105 120 135 150 150 150 150 150
95 110 125 150 150 150 150
85 100 120 150 150 150
80 100 125 150 150
* IO = (TJ - TA)/([VI - VO] RθJA • dc) = (150 - TA)/(5 • 258 • dc)
Output current rating can be increased (to 150 mA maximum) by heat sinking or reducing the input voltage. Conditions that produce excessive
junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated but should be avoided.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1994 Allegro MicroSystems, Inc.
|Features||Datasheet pdf 8183 LOW-DROPOUT, 8183 LOW-DROPOUT, 3 V REGULATOR 3 V REGULA— HIGH EFFICIEN CY Designed specifically to meet the re quirement for extended operation of bat tery-powered equipment such as cordless and cellular telephones, the A8183SLU voltage regulator offers the reduced dr opout voltage and quiescent current ess ential for maximum battery life. Applic able also to palmtop computers and pers onal data assistants, the device delive rs a regulated, continuous 3 V output a t up to 75 mA under normal operating co nditions, or to 150 mA (transient) unde r worst-case conditions. Data Sheet 27 468.4 OUT SUB IN TOR 6 5 SUB 4 VR Input Voltage, VI . . . . . . . . . . . . . . 10 V Output Current, IO . . . . . . . . . 150 mA* Enable Input Volt age, VE . . . . . . . . . . VI Operatin g Temperature Range, TA . . . . . . . . . . . . . -20°C to +85°C Junction Te mperature, TJ . . . +150°C† Storage Temperature Range, TS . . . . . . . . . . . . -40°C to +150°C * Output current rating is limited by input vol.|
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