CONTEK LM317L Datasheet
LM317L LINEAR INTEGRATED CIRCUIT
LOW CURRENT 1.25V TO 37V
ADJUSTABLE VOLTAGE
REGULATOR
DESCRIPTION
The Contek LM317L is a monolithic integrated
circuit, designed for use as positive adjustable voltage
regulator. It is designed to supply until 100mA of load
current with an output voltage adjustable over a 1.25V
to 37V range.
FEATURES
*Output voltage range: 1.25V to 37V
*Output current in excess of 100mA
*Line regulation typ. 0.01%
*Load regulation typ. 0.1%
*Thermal overload protection
*Short circuit protection
*Output transistor safe area compensation
*Floating operation for high voltage applications
PIN CONFIGURATIONS
3
21
ADJUST
TO-92 Plastic Package
Bottom View
OUT
IN
VIN
VOUT
V
ADJ
OUT
1
2
Contek
LM317L
3
4
SOP-8 PACKAGE
SOP-8
1
TO-92
8
NC
VOUT
7
VOUT
6
5
NC
ABSOLUTE MAXIMUM RATING
PARAMETER SYMBOL VALUE UNIT
Input-Output Differential Voltage Vi-Vo 40 V
Power Dissipation Pd Internally Limited
Operating Junction Temperature Range Topr 0~125 C
Storage Temperature Range Tstr -55 ~ 150 C
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
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LM317L LINEAR INTEGRATED CIRCUIT
SCHEMATIC DIAGRAM
INPUT
R16
Q22
D2
R19
Q25
R17
R21
C3
R20
R18
R22
Q26
R23
D3
R24
R25
R26
OUTPUT
ADJUST
Q1
D1
Contek
R1 R2 R3 R4 R5
Q10
Q2
R6 Q4
Q3
Q8
R8
R7
Q9
Q6
Q12
Q11
Q7
Q5
R11R12
R10
R9
Q13
R13
Q15
Q14
C1
Q18
Q16
Q17
C2
Q20
Q19
Q21
R15
R14
TEST CIRCUIT
CONTEK
Vi Vo
Contek
32
LM317L
R1
Cout
Cin
1
Vref
0.1mF
1mF
Iadj
R2
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
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