NCV317 ON Semiconductor, NCV317 Datasheet

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NCV317

Manufacturer Part Number
NCV317
Description
Positive Voltage Regulator
Manufacturer
ON Semiconductor
Datasheet

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LM317, NCV317
1.5 A Adjustable Output,
Positive Voltage Regulator
capable of supplying in excess of 1.5 A over an output voltage range of
1.2 V to 37 V. This voltage regulator is exceptionally easy to use and
requires 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.
card regulation. This device can also be used to make a programmable
output regulator, or by connecting a fixed resistor between the
adjustment and output, the LM317 can be used as a precision current
regulator.
Features
© Semiconductor Components Industries, LLC, 2006
August, 2006 − Rev. 9
The LM317 is an adjustable 3−terminal positive voltage regulator
The LM317 serves a wide variety of applications including local, on
Transistor Package
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 Constant with Temperature
Output Transistor Safe−Area Compensation
Floating Operation for High Voltage Applications
Available in Surface Mount D
Eliminates Stocking many Fixed Voltages
Pb−Free Packages are Available
** C
** C
Since I
negligible in most applications.
in
O
is not needed for stability, however, it does improve transient response.
is required if regulator is located an appreciable distance from power supply filter.
Adj
C
0.1 mF
is controlled to less than 100 mA, the error associated with this term is
in
*
V
in
Figure 1. Standard Application
V out + 1.25 V 1 )
I
Adj
LM317
2
PAK−3, and Standard 3−Lead
Adjust
R
2
R 2
R 1
) I
Adj
V
out
R 2
R
240
1
+ C
1.0 mF
O
**
1
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
See general marking information in the device marking
section on page 10 of this data sheet.
case outline drawing) is connected to Pin 2.
1
Heatsink surface (shown as terminal 4 in
DEVICE MARKING INFORMATION
1
2
Heatsink surface connected to Pin 2.
3
2
3
ORDERING INFORMATION
http://onsemi.com
Pin 1. Adjust
2. V
3. V
Publication Order Number:
out
in
CASE 221AB
D2T SUFFIX
CASE 936
T SUFFIX
D
TO−220
2
PAK−3
LM317/D

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NCV317 Summary of contents

Page 1

... LM317, NCV317 1.5 A Adjustable Output, Positive Voltage Regulator The LM317 is an adjustable 3−terminal positive voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of 1 This voltage regulator is exceptionally easy to use and requires 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− ...

Page 2

... C , when used, is connected between the adjustment pin and ground. Adj 6. Since Long−Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lot to lot. LM317, NCV317 Rating (V − 0.5 A for D2T and T packages; T ...

Page 3

... This device contains 29 active transistors. Figure 2. Representative Schematic Diagram Pulse testing required Duty Cycle * is suggested. 0 Figure 3. Line Regulation and DI LM317, NCV317 5 5.0 pF 6.8 k 30pF 30pF 2 – Line Regulation (% out LM317 Adjust ...

Page 4

... Figure 4. Load Regulation and 0 Pulse testing required Duty Cycle is suggested 120 Hz 0 Figure 6. Ripple Rejection Test Circuit LM317, NCV317 V out I L 240 1 Load Regulation (% /Load Test Circuit Adj ...

Page 5

... T , JUNCTION TEMPERATURE (°C) J Figure 9. Adjustment Pin Current 1.26 1.25 1.24 1.23 1.22 −50 − JUNCTION TEMPERATURE (°C) J Figure 11. Temperature Stability LM317, NCV317 4 25° 2.0 150°C 1.0 0 100 125 150 0 V −V in out 3.0 DV 2.5 2.0 1.5 1.0 100 125 150 −50 5 ...

Page 6

... Adj 0 −0 out −1 25°C −1 TIME (ms) Figure 17. Line Transient Response LM317, NCV317 = 10 mF 120 100 Adj out 120 25° 0.01 Figure 14. Ripple Rejection versus ...

Page 7

... The ground end of R near the load ground to provide remote ground sensing and improve load regulation. LM317, NCV317 APPLICATIONS INFORMATION External Capacitors A 0.1 mF disc or 1.0 mF tantalum input bypass capacitor (C ...

Page 8

... protects both LM317’s during an input short circuit. 6 Figure 22. ‘‘Laboratory’’ Power Supply with Adjustable Current Limit and Output Voltage LM317, NCV317 P for T = +50°C D(max) A Free Air 2.0 oz. Copper L Î Î Î Î ...

Page 9

... Lmin DSS O As shown 0 < I < 1 Figure 23. Adjustable Current Limiter V V out in LM317 240 Adjust MPS2907 Figure 25. Slow Turn−On Regulator LM317, NCV317 I out 1N4001 D 2 1N4001 2N5640 Figure 24. 5.0 V Electronic Shutdown Regulator V in ...

Page 10

... AWLYWWG AWLYWWG Assembly Location WL = Wafer Lot Y = Year WW = Work Week G = Pb−Free Package LM317, NCV317 Operating Temperature Range T = −40° to +125° 0° to +125° −55° to +150°C J MARKING DIAGRAMS NC V317BD2T LM AWLYWWG 317BT AWLYWWG 2 ...

Page 11

... G 0.010 (0.254 10.66 0.42 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. LM317, NCV317 PACKAGE DIMENSIONS 2 D PAK−3 D2T SUFFIX PLASTIC PACKAGE CASE 936−03 ISSUE B −T− TERMINAL 4 ...

Page 12

... Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com LM317, NCV317 PACKAGE DIMENSIONS TO−220, SINGLE GAUGE T SUFFIX PLASTIC PACKAGE CASE 221AB− ...

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