L78 datasheet(5/54 Pages) STMICROELECTRONICS

Part #	L78

Description	Thermal overload protection

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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L78

Maximum ratings

DocID2143 Rev 34

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3

Maximum ratings

Table 1: Absolute maximum ratings

Symbol

Parameter

Value

Unit

VI

DC input voltage

for VO= 5 to 18 V

35

V

for VO= 20, 24 V

40

IO

Output current

Internally limited

PD

Power dissipation

Internally limited

TSTG

Storage temperature range

-65 to 150

°C

TOP

Operating junction temperature range

for L78xxC, L78xxAC

0 to 125

°C

for L78xxAB

-40 to 125

Absolute maximum ratings are those values beyond which damage to the device

may occur. Functional operation under these condition is not implied.

Table 2: Thermal data

Symbol

Parameter

D²PAK

DPAK

TO-220

TO-220FP

Unit

RthJC

Thermal resistance junction-case

3

8

5

°C/W

RthJA

Thermal resistance junction-ambient

62.5

100

50

60

°C/W

Figure 4: Application circuits

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