Details

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BUY UCC2818N https://www.utsource.net/itm/p/483670.html
Low noise low drop voltage regulator with shutdown function

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	4.5	-	60	V	Operating input voltage range
Output Current Limit	IOLIM	-	1.5	3.0	A	Maximum output current
Switching Frequency	fSW	-	70	100	kHz	Switching frequency
Efficiency	η	-	85	92	%	Typical efficiency at full load
Quiescent Current	IQ	-	0.5	1.0	mA	Quiescent current
Thermal Shutdown	TSD	-	160	-	°C	Temperature at which thermal shutdown occurs

Instructions for UCC2818N

1. Power Supply Connection:

   • Connect the input power supply to the designated VIN pin ensuring it is within the specified operating range (4.5V to 60V).

2. Output Configuration:

   • Configure the output current limit by setting appropriate external components to achieve the desired maximum output current between 1.5A and 3.0A.

3. Frequency Adjustment:

   • Adjust the switching frequency using an external resistor or capacitor if necessary, to operate within the typical range of 70kHz to 100kHz.

4. Efficiency Monitoring:

   • Monitor the efficiency under different load conditions to ensure it stays within the typical range of 85% to 92%.

5. Thermal Management:

   • Ensure proper heat dissipation to prevent the device from reaching the thermal shutdown temperature of 160°C.

6. Quiescent Current Consideration:

   • Keep the quiescent current in mind when designing low-power applications, as it typically ranges from 0.5mA to 1.0mA.

7. Safety Precautions:

   • Always follow safety guidelines and precautions when handling and applying power to the device to avoid damage or injury.

(For reference only)