Details

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BUY LM7912CT/NOPB https://www.utsource.net/itm/p/858931.html
LM79XX Series 3-Terminal Negative Regulators; Package: TO-220; No of Pins: 3; Qty per Container: 45/Rail

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Output Voltage	Vout			-12.0		V
Input Voltage Range	Vin		-14.5		-18.0	V
Dropout Voltage	Vdo	Iout = 1.0A		2.0		V
Quiescent Current	IQ			8.0		mA
Short-Circuit Current	Isc	VIN = -18V, TJ = 25°C		2.2		A
Thermal Shutdown	TSD			160		°C

Instructions for LM7912CT/NOPB

1. Power Supply Connection:

   • Connect the input voltage to the "Input" pin.
   • Ensure the input voltage is within the specified range (-14.5V to -18V).

2. Output Configuration:

   • The output pin provides a regulated -12V. Connect this pin to your load.

3. Ground Connection:

   • Connect the ground pin to the common ground of your system.

4. Capacitor Requirements:

   • For stable operation, place a 0.33 μF capacitor between the input and ground.
   • Place a 0.1 μF capacitor between the output and ground.

5. Thermal Considerations:

   • The device includes thermal shutdown protection which activates at approximately 160°C.
   • Ensure adequate heat sinking if operating near maximum current or in high ambient temperatures.

6. Short-Circuit Protection:

   • The device has internal short-circuit current limiting.
   • Under short-circuit conditions, the output current will be limited to approximately 2.2A.

7. Operating Temperature Range:

   • The device is designed to operate over a temperature range from -40°C to +125°C.

8. Storage and Handling:

   • Store in a dry environment and handle with care to avoid damage to pins and packaging.

Note: Always refer to the latest datasheet from the manufacturer for detailed specifications and guidelines.

(For reference only)