Adjustable Regulator. LM317 Datasheet

LM317 Regulator. Datasheet pdf. Equivalent


Part LM317
Description 3-Terminal Positive Adjustable Regulator
Feature KA317 / LM317 — 3-Terminal Positive Adjustable Regulator KA317 / LM317 3-Terminal Positive Adjustab.
Manufacture Fairchild Semiconductor
Datasheet
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LM317
KA317 / LM317
3-Terminal Positive Adjustable Regulator
September 2014
Features
• Output-Current In Excess of 1.5 A
• Output-Adjustable Between 1.2 V and 37 V
• Internal Thermal Overload Protection
• Internal Short-Circuit Current Limiting
• Output-Transistor Safe Operating Area Compensation
• TO-220 Package
Description
This monolithic integrated circuit is an adjustable 3-termi-
nal positive-voltage regulator designed to supply more
than 1.5 A of load current with an output voltage adjust-
able over a 1.2 V to 37 V range. It employs internal cur-
rent limiting, thermal shutdown, and safe area
compensation.
TO-220
Output
1
1. Adj 2. Output 3. Input
Ordering Information
Product Number
LM317T
KA317TU
Package
TO-220 (Single Gauge)
TO-220 (Dual Gauge)
Block Diagram
Vin 3
Input
Packing Method
Rail
Rail
Operating Temperature
0°C to +125°C
0°C to +125°C
Voltage
Reference
Protection
Circuitry
1
VVAaADdJjj
© 2002 Fairchild Semiconductor Corporation
KA317 / LM317 Rev. 1.2.2
Figure 1. Block Diagram
RRlLimIMiItT
2 Vo
Output
www.fairchildsemi.com



LM317
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted.
Symbol
Parameter
Value
Unit
VI - VO
TLEAD
TJ
TSTG
ΔVO/ΔT
Input-Output Voltage Differential
Lead Temperature
Operating Junction Temperature Range
Storage Temperature Range
Temperature Coefficient of Output Voltage
40
230
0 to +125
-65 to +125
±0.02
V
°C
°C
°C
%/°C
Thermal Characteristics
Values are at TA = 25°C unless otherwise noted.
Symbol
Parameter
PD
RθJA
RθJC
Power Dissipation
Thermal Resistance, Junction to Ambient
Thermal Resistance, Junction to Case
Value
Internally Limited
80
5
Units
W
°C/W
°C/W
© 2002 Fairchild Semiconductor Corporation
KA317 / LM317 Rev. 1.2.2
2
www.fairchildsemi.com







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