L78M datasheet(44/45 Pages) STMICROELECTRONICS

44 / 45 page

List of figures

Figure 1.

Block diagram .................................................................... 2

Figure 2.

Pin connections (top view) ............................................................ 3

Figure 3.

Schematic diagram ................................................................. 4

Figure 4.

Application circuit .................................................................. 5

Figure 5.

DC parameter..................................................................... 6

Figure 6.

Load regulation.................................................................... 6

Figure 7.

Ripple rejection.................................................................... 6

Figure 8.

Dropout voltage vs junction temp. ...................................................... 16

Figure 9.

Dropout characteristics ............................................................. 16

Figure 10.

Peak output current vs input-output differential voltage ....................................... 16

Figure 11.

Output voltage vs junction temperature .................................................. 16

Figure 12.

Supply voltage rejection vs frequency ................................................... 17

Figure 13.

Quiescent current vs junction temperature ................................................ 17

Figure 14.

Load transient response ............................................................ 17

Figure 15.

Line transient response ............................................................. 17

Figure 16.

Quiescent current vs input voltage ..................................................... 17

Figure 17.

Fixed output regulator .............................................................. 18

Figure 18.

Constant current regulator ........................................................... 18

Figure 19.

Circuit for increasing output voltage..................................................... 19

Figure 20.

Adjustable output regulator (7 to 30 V)................................................... 19

Figure 21.

0.5 to 10 V regulator ............................................................... 19

Figure 22.

High current voltage regulator......................................................... 20

Figure 23.

High output current with short circuit protection ............................................. 20

Figure 24.

Tracking voltage regulator ........................................................... 20

Figure 25.

High input voltage circuit ............................................................ 21

Figure 26.

Reducing power dissipation with dropping resistor........................................... 21

Figure 27.

Power AM modulator (unity voltage gain, IO ≤ 0.5)........................................... 21

Figure 28.

Adjustable output voltage with temperature compensation ..................................... 22

Figure 29.

TO-220 (single gauge) package outline .................................................. 23

Figure 30.

TO-220 (dual gauge) package outline ................................................... 25

Figure 31.

TO-220FP package outline........................................................... 27

Figure 32.

DPAK (TO-252) package outline A ..................................................... 30

Figure 33.

DPAK (TO-252) package outline E ..................................................... 32

Figure 34.

DPAK (TO-252) package outline I ...................................................... 34

Figure 35.

DPAK footprint recommended data ..................................................... 35

Figure 36.

DPAK tape ...................................................................... 36

Figure 37.

DPAK reel ...................................................................... 37

Figure 38.

IPAK package outline .............................................................. 38

L78M

List of figures

DS0425 - Rev 24

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