PJ317
3-Terminal Adjustable Output Positive Voltage Regulator
1-11
2002/10.rev.A
he PJ317 is adjustable 3-terminal positive voltage
regulator capable of supplying in excess of 1.5 A
over an output voltage range of 1.25 V to 37 V. This voltage
regulator is exceptionally easy to use and require only two
external resistors to set the output voltage. Further,
it
employs internal current limiting, thermal shutdown and
safe area compensation, making it essentially blow-out
proof.
•
Output Current in Excess of 1.5 Ampere
•
Output Adjustable between 1.25 V and 37 V
•
Internal Thermal Overload Protection
•
Internal Short-Circuit Current Limiting
Constant with Temperature
•
Output Transistor Safe-Area Compensation
•
Floating Operation for High Voltage Applications
•
Standard 3-lead Transistor Packages
•
Eliminates Stocking Many Fixed Voltages
T
FEATURES
CIRCUIT SCHEMATIC
* = Cin is required if regulator is located an appreciable distance from power supply filter.
** = Co is not needed for stability, however it does improve transient response.
Vout = 1.25 V (1 + R2 / R1 ) + IAdj R2
Since IAdj is controlled to less than 100 µA, the error associated with this term is negligible in most applications
STANDARD APPLICATION
Pin 1. Vin
5. Nc
2. Vout
6. Vout
3. Vout
7. Vout
4. Adjust
8. Nc
TO-220 / TO-263 / TO-
92/ TO-252 / SOT-223
Pin 1. Adjust
2. Vout
3. Vin
Heatsink surface
connected to Pin2
TO-220
TO-92
TO-252
SOT-223
SOP-8
ORDERING INFORMATION
Device
Operating
Temperature
Package
Design
Load
Current
PJ317CZ
TO-220
1.5A
PJ317CM
TO-263
1.5A
PJ317CT
TO-92
0.1A
PJ317CP
TO-252
0.5A
PJ317CW
SOT-223
1A
PJ317CS
-20℃ to 85℃
SOP-8
0.3A
TO-263
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