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L4955 Datasheet(PDF) 2 Page - STMicroelectronics |
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L4955 Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 14 page VERSAWATT (TO220) ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VIN Supply Input Voltage 24 V ADJ and CL pins PG and INH pins -0.3 to 4 0to VIN V V PTOT Power Dissipation @ Tamb =50 °C Power Dissipation @ Tcase =90°C 2 15 W W Tst,Ti Storage Temperature -40 to +150 °C PIN CONNECTIONS (Top views) HEPTAWATT 1 2 3 4 5 6 7 OUT PG ADJ GND INH CL IN D96IN367 tab connected to pin 4 OUT GND IN 1 3 D96IN369 IN PROGRAM. C.L. PRE REGULATOR VREF= 1.26V + - E/A OUT ADJ GND PG CL D96IN366 1(1) 3 26 4(2) 5 7(3) PIN x = HEPTAWATT PIN (x) = VERSAWATT INHIBIT ACTIVE HIGH 1.26V INH V IN 10 µF FIXED C.L. THERMAL SHUTDOWN FOLDBACK BUFFER CHARGE PUMP POWER DMOS 150m Ω + - VREF 0.9V REF R1 22 µF R2 VOUT R CL (1/4W, 1%) BLOCK DIAGRAM L4955 2/14 |
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