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LM338 Datenblatt(PDF) 1 Page - Linear Technology

Teilenummer LM338
Bauteilbeschribung  5A Positive Adjustable Voltage Regulator
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LM338 Datenblatt(HTML) 1 Page - Linear Technology

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LT138A/LT338A
LM138/LM338
1
138afd
For more information www.linear.com/LT138A
Typical applicaTion
FeaTures
applicaTions
DescripTion
5A Positive Adjustable
Voltage Regulator
The LT®138A series of adjustable regulators provide 5A
output current over an output voltage range of 1.2V to
32V. The internal voltage reference is trimmed to less
than 1%, enabling a very tight output voltage. In addition
to excellent line and load regulation, with full overload
protection, the LT138A incorporates new current limit-
ing circuitry allowing large transient load currents to be
handled for short periods. Transient load currents of up
to 12A can be supplied without limiting, eliminating the
need for a large output capacitor.
The LT138A is an improved version of the popular LM138
with improved circuit design and advanced process tech-
niques to provide superior performance and reliability.
The graph below shows the significant improvement in
output voltage tolerance achieved by using the LT138A
or LT338A.
Parallel Regulators for Higher Current*
n
Guaranteed 1% Initial Tolerance
n
Guaranteed 0.3% Load Regulation
n
Guaranteed 5A Output Current
n
100% Thermal Limit Burn-In
n
12A Transient Output Current
n
High Power Linear Regulator
n
Battery Chargers
n
Power Driver
n
Constant-Current Regulator
Output Voltage Error
LT338A
0.01Ω∗∗
VIN
VIN
THIS CIRCUIT WILL NOT WORK WITH LM VERSION DEVICES
CURRENT SHARING RESISTORS DEGRADE REGULATION TO 1%
*
**
VOUT
ADJ
LT350A
VIN
138/338 TA01
121Ω
1%
5V
8A
VOUT
ADJ
0.016Ω**
365Ω
1%
OUTPUT VOLTAGE (V)
1
0
3
5
7
10
10
100
138A/338A TA02
1
4
6
9
12
11
8
2
2% RESISTORS
2% RESISTORS
1% RESISTORS
1% RESISTORS
LM338
LM338
LT338A
LT338A
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
OBSOLETE:
FOR INFORMATION PURPOSES ONLY
Contact Linear Technology for Potential Replacement


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