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UC282T-2G3 Datasheet(HTML) 1 Page - Texas Instruments

Part No. UC282T-2G3
Description  FAST LDO LINEAR REGULATOR
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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UC282T-2G3 Datasheet(HTML) 1 Page - Texas Instruments

 
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UC2821, UC2822, UC2823, UC282ADJ, UC3821, UC3822, UC3823, UC382ADJ
FAST LDO LINEAR REGULATOR
SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Fast Transient Response
D 10-mA to 3-A Load Current
D Short Circuit Protection
D Maximum Dropout of 450-mV at 3-A Load
Current
D Separate Bias and VIN Pins
D Available in Adjustable or Fixed-Output
Voltages
D 5-Pin Package Allows Kelvin Sensing of
Load Voltage
D Reverse Current Protection
description
The UC382 is a low-dropout-linear regulator providing a quick response to fast load changes. Combined with
its precision onboard reference, the UC382 excels at driving GTL and BTL buses. Due to its fast response to
load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased
when compared to standard LDO linear regulators.
Dropout voltage (VIN to VOUT) is only 450 mV maximum at 100
°C and 350 mV typical at 3-A load.
The onboard bandgap reference is stable with temperature and scaled for a 1.2-V input to the internal-power
amplifier. The UC382 is available in fixed-output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the
adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage
defaults to 1.2 V.
block diagram
+
THERMAL
SHUTDOWN
1.2 V
BANDGAP
REFERENCE
R2
R1
3
5
SHORT
CIRCUIT
SENSE
2
1
4
UC382−ADJ
UC382−1 (1.5 V)
UC382−2 (2.1 V)
UC382−3 (2.5 V)
OPEN
0
2 k
500
2 k
1.5 k
2 k
2.16 k
R1
R2
ADJ
GND
VOUT
VIN
VB
UDG-00080
Copyright
 2000−2004, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
5-PIN TO-263
TD PACKAGE
(TOP VIEW)
5-PIN TO-220
T PACKAGE (TOP VIEW)
Note: Tab = Ground
All trademarks are the property of their respective owners.


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