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78S05 データシート(PDF) 18 Page - STMicroelectronics

部品番号 78S05
部品情報  2A POSITIVE VOLTAGE REGULATORS
PDF  21 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

78S05 データシート(HTML) 18 Page - STMicroelectronics

Back Button 78S05 Datasheet HTML 13Page - STMicroelectronics 78S05 Datasheet HTML 14Page - STMicroelectronics 78S05 Datasheet HTML 15Page - STMicroelectronics 78S05 Datasheet HTML 16Page - STMicroelectronics 78S05 Datasheet HTML 17Page - STMicroelectronics 78S05 Datasheet HTML 18Page - STMicroelectronics 78S05 Datasheet HTML 19Page - STMicroelectronics 78S05 Datasheet HTML 20Page - STMicroelectronics 78S05 Datasheet HTML 21Page - STMicroelectronics  
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Figure 32 : Light Controllers (Vo min =Vxx +VBE).
VO falls when the light goes up
VO rises when the light goes up
Figure 33 : Protection against Input Short-circuit
with High Capacitance Loads.
Applications with high capacitance loads and an
output voltage greater than 6 volts need an external
diode (see fig. 33) to protect the device against input
short circuit. In this case the input voltage falls
rapidly while the output voltage decreases showly.
The capacitance discharges by means of the Base-
Emitter junction of the series pass transistor in the
regulator. If the energy is sufficiently high, the tran-
sistor may be destroyed. The external diode by-
passes the current from the IC to ground.
L78S00 SERIES
18/21



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