Details

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BUY MC78M12G https://www.utsource.net/itm/p/12609065.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	-	13.8	-	20	V
Output Voltage	VOUT	-	-	12	-	V
Output Current	IOUT	-	-	0.5	-	A
Dropout Voltage	VDROPOUT	IOUT = 0.5A, Tj = 25掳C	-	2.0	-	V
Quiescent Current	IQ	VIN = 15V, IOUT = 0A, Tj = 25掳C	-	6	-	mA
Thermal Resistance (Junction to Ambient)	R胃JA	-	-	120	-	掳C/W
Operating Temperature	Toper	-	-40	-	125	掳C
Storage Temperature	Tstg	-	-65	-	150	掳C

Instructions for Using MC78M12G:

1. Input Voltage:

   • Ensure the input voltage is within the range of 13.8V to 20V. Exceeding these limits can damage the regulator.

2. Output Voltage:

   • The output voltage is fixed at 12V. No external components are required to set this voltage.

3. Output Current:

   • The maximum continuous output current is 0.5A. Do not exceed this limit to avoid overheating and potential damage.

4. Dropout Voltage:

   • The dropout voltage is 2.0V at 0.5A and 25掳C. Ensure that the input voltage is at least 2V higher than the output voltage to maintain regulation.

5. Quiescent Current:

   • The quiescent current is typically 6mA when no load is applied. This should be considered in low-power applications.

6. Thermal Management:

   • The thermal resistance from junction to ambient is 120掳C/W. Use a heatsink if the device will operate at high temperatures or under heavy loads to prevent overheating.

7. Operating Temperature:

   • The operating temperature range is from -40掳C to 125掳C. Ensure the device operates within this range to avoid performance degradation or failure.

8. Storage Temperature:

   • Store the device in a temperature range of -65掳C to 150掳C to ensure long-term reliability.

9. Capacitors:

   • It is recommended to use a 0.33渭F ceramic capacitor on the input and a 1渭F tantalum capacitor on the output for stability and transient response.

10. PCB Layout:

    • Ensure proper PCB layout with short leads and adequate copper area for heat dissipation. Place the input and output capacitors as close as possible to the regulator.

11. Handling:

    • Handle the device with care to avoid static discharge, which can damage the internal components. Use proper ESD protection practices.

(For reference only)