Regulator. UC382-2 Datasheet

UC382-2 Datasheet PDF


Part

UC382-2

Description

Fast LDO Linear Regulator

Manufacture

etcTI

Page 17 Pages
Datasheet
Download UC382-2 Datasheet


UC382-2 Datasheet
ą UC282Ć1, UC282Ć2, UC282Ć3, UC282ĆADJ, UC382Ć1, UC382Ć2, UC382Ć3, UC382ĆADJ
FAST LDO LINEAR REGULATOR
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
SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004
5-PIN TO-220
T PACKAGE (TOP VIEW)
5-PIN TO-263
TD PACKAGE
(TOP VIEW)
description
Note: Tab = Ground
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
VB
1
THERMAL
SHUTDOWN
1.2 V
BANDGAP
REFERENCE
+
UC382−ADJ
UC382−1 (1.5 V)
UC382−2 (2.1 V)
UC382−3 (2.5 V)
R1
OPEN
2k
2k
2k
R2
0
500
1.5 k
2.16 k
2 VIN
R1 R2
SHORT
CIRCUIT
SENSE
35
4
GND
ADJ
VOUT
UDG-00080
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.
All trademarks are the property of their respective owners.
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.
Copyright 2000−2004, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1

UC382-2 Datasheet
UC282Ć1, UC282Ć2, UC282Ć3, UC282ĆADJ, UC382Ć1, UC382Ć2, UC382Ć3, UC382ĆADJ
FAST LDO LINEAR REGULATOR
ą
SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004
absolute maximum ratings over operating free-air temperature (unless otherwise noted)}
VB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 V
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 V
Output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 V to 6.0 V
Storage temperature, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
Junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 150°C
Lead temperature (soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
} Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and
considerations of packages.
AVAILABLE OPTIONS(1)
TJ
–40°C to 100°C
0°C to 100°C
1.5 V
282T-1
382T-1
TO-220 (T)
OUTPUT VOLTAGE
2.1 V
2.5 V
282T-2
282T-3
382T-2
382T-3
PACKAGED DEVICES
1.2 V or ADJ
282T-ADJ
382T-ADJ
1.5 V
282TD-1
382TD-1
TO−263 (TD)(2)
OUTPUT VOLTAGE
2.1 V
2.5 V
282TD-2
282TD-3
382TD-2
382TD-3
1. For more package and ordering information, see the Package Option Addendum located at the end of this data sheet.
2. For 50 piece reel, add KTTT (e.g., UC282TDKTTT−1); for 500 piece reel, add TR (e.g., UC282TDTR−1).
1.2 V or ADJ
282TD-ADJ
382TD-ADJ
electrical characteristics, TA = −40°C to 100°C for the UC282-X series and 0°C to 100°C for the
UC382-X, VB = 5 V, VIN = 3.3 V, VOUT = 2.5 V for the UC382-ADJ, TA = TJ, (unless otherwise stated)
UC382-3 fixed 2.5 V, 3-A family
PARAMETERS
Output voltage (IVOUT = 100 mA)
Load regulation
VIN PSSR
VB PSSR
VIN dropout voltage = VIN−VOUT
VB dropout = VB−VOUT
Short circuit current limit
VB current
VIN current
TEST CONDITIONS
UC382-3
UC282-3
IVOUT = 10 mA to 3 A
IVOUT = 3 A,
IVOUT = 3 A,
IVOUT = 3 A,
IVOUT = 3 A,
IVOUT = 3 A,
IVOUT = 10 mA
IVOUT = 3 A
IVOUT = 3 A
TJ = 25°C
UC382-3
UC282-3
UC382-3
UC282-3
MIN
2.475
2.450
80
50
3.3
2.94
TYP
2.500
2.500
0.5
100
60
350
350
350
1.8
1.8
6
18
2.97
MAX UNITS
2.525 V
2.525 V
4 mV
dB
dB
425 mV
450 mV
500 mV
2.10 V
2.20 V
4.5 A
11 mA
60 mA
A
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


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