L78S12C STMicroelectronics, L78S12C Datasheet - Page 31

• Manufacturer Part Number: L78S12C
• Description: 2 A positive voltage regulators
• Manufacturer: STMicroelectronics

L78Sxx, L78SxxC
Figure 37. Protection against input short-circuit with high capacitance loads
1. Application with high capacitance loads and an output voltage greater than 6 volts need an external diode
(see
falls rapidly while the output voltage decrease slowly. 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 transistor
may be destroyed. The external diode by-passes the current from the IC to ground.
Figure 30 on page 28
) to protect the device against input short circuit. In this case the input voltage
Doc ID 2148 Rev 6
Typical performance
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