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LM-338K データシート(PDF) 1 Page - Linear Technology

部品番号 LM-338K
部品情報  5A Positive Adjustable Voltage Regulator
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LM-338K データシート(HTML) 1 Page - Linear Technology

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1
LT138A/LT338A
LM138/LM338
5A Positive Adjustable
Voltage Regulator
s
Guaranteed 1% Initial Tolerance
s
Guaranteed 0.3% Load Regulation
s
Guaranteed 5A Output Current
s
100% Thermal Limit Burn-In
s
12A Transient Output Current
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 excel-
lent line and load regulation, with full overload protection,
the LT138A incorporates new current limiting 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.
s
High Power Linear Regulator
s
Battery Chargers
s
Power Driver
s
Constant-Current Regulator
, LTC and LT are registered trademarks of Linear Technology Corporation.
Parallel Regulators for Higher Current*
LT338A
0.01
Ω**
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
121
1%
5V
8A
VOUT
ADJ
0.016
Ω**
365
1%
Output Voltage Error
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
DESCRIPTIO
FEATURES
APPLICATIO S
TYPICAL APPLICATIO


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