L78S09CV STMicroelectronics, L78S09CV Datasheet - Page 21

• Manufacturer Part Number: L78S09CV
• Description: IC REG POS VOLT 2A 9V TO-220
• Manufacturer: STMicroelectronics

Specifications of L78S09CV

• Regulator Topology: Positive Fixed
• Voltage - Output: 9V
• Voltage - Input: Up to 35V
• Number Of Regulators: 1
• Current - Output: 2A
• Operating Temperature: 0°C ~ 150°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: 9 V
• Output Current: 0.5 A
• Line Regulation: 130 mV
• Load Regulation: 170 mV
• Dropout Voltage (max): 12 V
• Input Voltage Max: 35 V
• Maximum Operating Temperature: + 150 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Primary Input Voltage: 14V
• Output Voltage Fixed: 9V
• Dropout Voltage Vdo: 3V
• No. Of Pins: 3
• Voltage Regulator Case Style: TO-220
• Operating Temperature Range: 0°C To +150°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-6038-5; L78S09CV

L78S00 SERIES
Figure 33 : Protection against Input Short-Circuit with High Capacitance Loads
Application 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 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 de-
stroyed. The external diode by-passes the current from the IC to ground.
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