Details

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BUY UCC2809D-1 https://www.utsource.net/itm/p/12614724.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	VCC	10.5	15	30	V	Operating supply voltage range
Start-Up Current	ISTART	-	200	-	μA	Supply current during start-up
Quiescent Current	IQ	-	4	-	mA	Supply current in regulation
Maximum Duty Cycle	DMAX	-	98	-	%	Maximum duty cycle of the controller
Frequency	fSW	-	65	-	kHz	Switching frequency
Input Voltage Range	VIN	100	-	400	VAC	Input voltage range for operation
Output Voltage Regulation	VOUT	-	5	-	V	Regulated output voltage
Temperature Range	Toper	-40	-	85	°C	Operating temperature range

Instructions for UCC2809D-1

1. Supply Voltage (VCC):

   • Ensure the supply voltage is within the range of 10.5V to 30V. The typical operating voltage is 15V.

2. Start-Up Current (ISTART):

   • During start-up, the device draws approximately 200μA from the supply. Ensure that the power source can provide this current without significant voltage drop.

3. Quiescent Current (IQ):

   • In normal operation, the quiescent current is around 4mA. Design the power supply to efficiently handle this load.

4. Maximum Duty Cycle (DMAX):

   • The maximum duty cycle is 98%. This parameter affects the timing and control of the switching element. Adjust external components accordingly to avoid exceeding this limit.

5. Switching Frequency (fSW):

   • The typical switching frequency is 65kHz. This value influences the size of the magnetic components and the efficiency of the converter.

6. Input Voltage Range (VIN):

   • The device operates with an input voltage range of 100VAC to 400VAC. Verify that the input voltage remains within this range for reliable operation.

7. Output Voltage Regulation (VOUT):

   • The regulated output voltage is typically 5V. Use appropriate feedback mechanisms to maintain this voltage level under varying load conditions.

8. Operating Temperature Range (Toper):

   • The device is designed to operate between -40°C and 85°C. Ensure adequate thermal management to keep the device within this temperature range.

For detailed design considerations and application circuits, refer to the datasheet provided by the manufacturer.

(For reference only)