Details

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BUY 78M08 https://www.utsource.net/itm/p/12535077.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VI	10	-	30	V
Output Voltage	VO	-	8.0	-	V
Output Current (Max)	IO	-	500	-	mA
Dropout Voltage	VD	-	2.0	-	V
Quiescent Current	IQ	-	5.0	-	mA
Thermal Resistance (胃JA)	胃JA	-	65	-	掳C/W
Operating Temperature	Toper	-40	-	125	掳C
Storage Temperature	Tstg	-65	-	150	掳C

Instructions for Using the 78M08:

1. Input Voltage:

   • Ensure the input voltage is within the range of 10V to 30V.
   • Use appropriate capacitors (typically 0.33 渭F and 0.1 渭F) on the input and output to stabilize the regulator.

2. Output Voltage:

   • The 78M08 provides a fixed output voltage of 8.0V.
   • No external components are required to set the output voltage.

3. Output Current:

   • The maximum continuous output current is 500 mA.
   • For higher current requirements, consider using a heat sink or a different regulator.

4. Dropout Voltage:

   • The dropout voltage is approximately 2.0V.
   • Ensure the input voltage is at least 2.0V higher than the output voltage to maintain regulation.

5. Quiescent Current:

   • The quiescent current is typically 5.0 mA.
   • This is the current consumed by the regulator itself when no load is applied.

6. Thermal Management:

   • The thermal resistance (胃JA) is 65掳C/W.
   • Use a heat sink if the power dissipation exceeds safe limits to prevent overheating.

7. Operating Temperature:

   • The operating temperature range is from -40掳C to 125掳C.
   • Ensure the ambient temperature is within this range to avoid damage.

8. Storage Temperature:

   • The storage temperature range is from -65掳C to 150掳C.
   • Store the device in a dry, cool place to ensure long-term reliability.

9. Mounting:

   • Mount the 78M08 with adequate clearance from other components to allow for proper heat dissipation.
   • Use a thermal compound between the regulator and the heat sink for better thermal conductivity.

10. Testing:

    • Before finalizing the design, test the regulator under various load conditions to ensure stable operation.
    • Monitor the temperature of the regulator during testing to ensure it does not exceed the maximum operating temperature.

(For reference only)