L78XX datasheet(7/56 Pages) STMICROELECTRONICS

部件名	L78XX

功能描述	Positive voltage regulators

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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7 / 56 page

L78xx, L78xxC, L78xxAB, L78xxAC

Maximum ratings

Doc ID 2143 Rev 22

7/56

3

Maximum ratings

Note:

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

Functional operation under these condition is not implied.

Table 2.

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 L78xx

-55 to 150

°C

for L78xxC, L78xxAC

0 to 125

for L78xxAB

-40 to 125

Table 3.

Thermal data

Symbol

Parameter

D²PAK

DPAK

TO-220

TO-220FP

TO-3

Unit

RthJC

Thermal resistance junction-case

3

8

5

4

°C/W

RthJA

Thermal resistance junction-ambient

62.5

100

50

60

35

°C/W

Figure 4.

Application circuits

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