Details

---

BUY L7809CV L7809 TO-220 ST https://www.utsource.net/itm/p/9237361.html

Parameter	Value	Unit
Output Voltage (Vout)	9	V
Input Voltage (Vin)	10.2 to 35	V
Output Current (Iout)	1.5	A
Dropout Voltage (Vdo)	2.0	V
Quiescent Current	8	mA
Operating Temperature	-40 to 125	°C
Storage Temperature	-65 to 150	°C
Junction Temperature	150	°C
Thermal Resistance	5	°C/W

Instructions for L7809CV (TO-220 Package):

1. Mounting:

   • Ensure the heatsink is properly attached to dissipate heat effectively.
   • Use mica insulators and thermal grease if necessary.

2. Input Capacitor:

   • Place a 0.33 μF capacitor between the input pin and ground close to the regulator to stabilize the input voltage.

3. Output Capacitor:

   • Connect a 0.1 μF capacitor between the output pin and ground near the regulator to improve transient response and stability.

4. Ground Connection:

   • Ensure a solid ground connection for both capacitors and the regulator itself to prevent oscillation and noise issues.

5. Power Dissipation:

   • Calculate power dissipation using the formula ( P = (Vin - Vout) * Iout ).
   • Verify that the heatsink can handle the calculated power dissipation.

6. Overcurrent Protection:

   • The device has internal short-circuit current limiting and thermal overload protection, but external fuses may be required depending on the application.

7. Polarity:

   • Pay attention to the polarity of the input and output connections. Incorrect polarity can damage the regulator.

8. Package Handling:

   • Handle the TO-220 package with care to avoid damaging the pins or the body of the component.

9. Soldering:

   • Use appropriate soldering techniques to ensure reliable connections without overheating the component.

(For reference only)