LM317MABDTRK datasheet(11/16 Pages) ONSEMI

No. de pieza	LM317MABDTRK

Descripción Electrónicos	Three-Terminal Adjustable Output Positive Voltage Regulator

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Fabricante Electrónico	ONSEMI [ON Semiconductor]

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LM317M

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11

Figure 21. Adjustable Current Limiter

Figure 22. 5 V Electronic Shutdown Regulator

Figure 23. Slow Turn−On Regulator

Figure 24. Current Regulator

Vref

+25V

Vin

LM317M

Vout

R1

VO

1.25k

Adjust

IO

D2

1N914

1N5314

R2

500

* To provide current limiting of IO

to the system ground, the source of

the current limiting diode must be tied to

a negative voltage below −7.25 V.

R2 ≥

Vref

R1 =

VSS*

D1

1N914

VO < POV + 1.25 V + VSS

ILmin − IP < IO < 500 mA − IP

As shown O < IO < 495 mA

+

10

mF

Vin

Vout

240

1N4001

LM317M

Adjust

MPS2907

R2

50k

Vin

D1

1N4002

Vout

120

Adjust

720

+

1.0

mF

MPS2222

1.0k

TTL

Control

LM317M

Minimum Vout = 1.25 V

D1 protects the device during an input short circuit.

LM317M

Vin

R1

R2

Adjust

IAdj

Iout

5.0 mA < Iout < 100 mA

Vout

Ioutmax =

Vref

+ IAdj ^

1.25 V

R1 + R2

Vout

Vin

IDSS

IOmax + IDSS

R1 + R2

40

50

60

70

80

90

100

0

0.4

0.8

1.2

1.6

2.0

2.4

010

20

30

25

15

5.0

L, LENGTH OF COPPER (mm)

PD(max) for TA = 50°C

Minimum

Size Pad

L

Free Air

Mounted

Vertically

RqJA

2.0 oz. Copper

Figure 25. DPAK Thermal Resistance and Maximum

Power Dissipation versus PCB Copper Length

Figure 26. SOT−223 Thermal Resistance and Maximum

Power Dissipation versus PCB Copper Length

40

80

120

160

200

240

280

0.35

0.42

0.50

0.63

0.83

1.25

2.50

010

20

30

25

15

5.0

L, LENGTH OF COPPER (mm)

PD(max) for TA = 50°C

Minimum

Size Pad

L

Free Air

Mounted

Vertically

RqJA

2.0 oz. Copper

Número de pieza similar - LM317MABDTRK

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
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LM317MABDTRK Datasheet(PDF) 11 Page - ON Semiconductor

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