Details

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BUY U840 https://www.utsource.net/itm/p/12605658.html

Parameter	Description	Value
Part Number	U840	-
Type	Voltage Regulator	-
Output Voltage	Fixed Output Voltage	5V
Input Voltage	Minimum Input Voltage	7V
Maximum Input Voltage	Maximum Input Voltage	35V
Output Current	Continuous Output Current	1A
Quiescent Current	Quiescent Current (Typical)	5mA
Dropout Voltage	Dropout Voltage (Typical)	2V
Operating Temperature Range	Operating Temperature Range	-40掳C to 125掳C
Storage Temperature Range	Storage Temperature Range	-65掳C to 150掳C
Package Type	TO-220	-

Instructions for Use:

1. Circuit Connection:

   • Input Pin (IN): Connect to the input power supply.
   • Ground Pin (GND): Connect to the common ground.
   • Output Pin (OUT): Connect to the load or circuit requiring regulated voltage.

2. Capacitors:

   • Input Capacitor: A 10渭F electrolytic capacitor is recommended between the input pin and ground to filter out noise and stabilize the input voltage.
   • Output Capacitor: A 10渭F electrolytic capacitor is recommended between the output pin and ground to stabilize the output voltage and reduce ripple.

3. Heat Dissipation:

   • For high current applications, ensure proper heat dissipation by using a heatsink. The thermal resistance from the junction to the ambient air (胃ja) should be considered to avoid overheating.

4. Input Voltage:

   • Ensure the input voltage is at least 2V higher than the output voltage to maintain regulation. The maximum input voltage should not exceed 35V.

5. Output Current:

   • The U840 can provide up to 1A of continuous output current. For higher currents, consider using a more powerful regulator or multiple regulators in parallel.

6. Operating Temperature:

   • The operating temperature range is -40掳C to 125掳C. Ensure the ambient temperature does not exceed these limits to prevent damage to the device.

7. Storage Temperature:

   • Store the U840 in a dry place with temperatures ranging from -65掳C to 150掳C.

8. Mounting:

   • Mount the U840 on a PCB or heatsink using appropriate mounting hardware. Ensure good thermal contact if using a heatsink.

9. Testing:

   • After assembly, test the circuit to ensure the output voltage is stable and within the specified range. Check for any excessive heating or unusual behavior.

(For reference only)