Details

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BUY L78M09CDT 78M09 https://www.utsource.net/itm/p/9531356.html

Parameter	Symbol	Min	Typical	Max	Unit	Conditions
Input Voltage	VIN	11.5	-	35	V
Output Voltage	VOUT	8.6	9	9.4	V	No Load to Full Load
Output Current	IOUT	-	500	-	mA
Quiescent Current	IQ	-	8	-	mA	VIN = 25V, IOUT = 0mA
Dropout Voltage	VD	-	2	-	V	IOUT = 500mA
Line Regulation	-	-	0.01	-	%/V	VIN = 11.5V to 35V, IOUT = 500mA
Load Regulation	-	-	0.5	-	%	VIN = 15V, IOUT = 0 to 500mA
Ripple Rejection	-	-	70	-	dB	f = 120Hz, VIN = 15V, IOUT = 500mA
Operating Junction Temp.	TJ	-40	-	125	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 11.5V to 35V.
   • The minimum input voltage should be at least 2V higher than the output voltage to maintain regulation.

2. Output Voltage (VOUT):

   • The output voltage is regulated to 9V with a tolerance of 卤5%.
   • Ensure the load does not exceed 500mA to avoid overheating or damage.

3. Quiescent Current (IQ):

   • The quiescent current is typically 8mA at no load and an input voltage of 25V.
   • This current is drawn from the input supply even when there is no load on the output.

4. Dropout Voltage (VD):

   • The dropout voltage is the difference between the input and output voltages at full load.
   • Ensure the input voltage is at least 2V higher than the output voltage to maintain regulation.

5. Line Regulation:

   • The line regulation is the change in output voltage due to changes in input voltage.
   • It is typically 0.01% per volt of input voltage change.

6. Load Regulation:

   • The load regulation is the change in output voltage due to changes in load current.
   • It is typically 0.5% over the load range from 0 to 500mA.

7. Ripple Rejection:

   • The ripple rejection is the ability of the regulator to reduce input ripple to the output.
   • It is typically 70dB at 120Hz.

8. Operating Junction Temperature (TJ):

   • The operating junction temperature should be kept between -40掳C and 125掳C to ensure reliable operation.
   • Use appropriate heat sinking if the device is expected to operate near the upper limit.

9. Storage Temperature (TSTG):

   • The device can be stored between -65掳C and 150掳C without damage.

10. Mounting and Handling:

    • Handle the device with care to avoid mechanical stress.
    • Ensure proper mounting to a heatsink if high power dissipation is expected.

11. Circuit Design:

    • Include input and output capacitors to stabilize the regulator and filter out noise.
    • Typical values are 0.33渭F ceramic for the input and 0.1渭F ceramic for the output.

By following these guidelines, you can ensure optimal performance and reliability of the L78M09CDT 78M09 voltage regulator.

(For reference only)