Details

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BUY UCC28084DR https://www.utsource.net/itm/p/11741699.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	VCC	8.5	-	16	V	Operating range of the supply voltage
Start-Up Current	ISTART	-	150	-	渭A	Typical current required to start the device
Quiescent Current	IQ	-	200	-	渭A	Typical quiescent current at nominal operating conditions
Oscillator Frequency	fOSC	300	-	700	kHz	Range of the internal oscillator frequency
Minimum On-Time	tON(min)	250	-	-	ns	Minimum on-time for the high-side switch
Maximum Off-Time	tOFF(max)	-	-	1500	ns	Maximum off-time for the high-side switch
Overcurrent Protection Threshold	IFAULT	-	1.2	-	A	Threshold for overcurrent protection
Thermal Shutdown Temperature	TSD	150	-	-	掳C	Temperature at which thermal shutdown is initiated
Operating Temperature Range	TOPR	-40	-	125	掳C	Range of ambient temperatures for operation
Storage Temperature Range	TSTG	-65	-	150	掳C	Range of temperatures for storage

Instructions for Using UCC28084DR

1. Supply Voltage (VCC):

   • Ensure the supply voltage is within the range of 8.5V to 16V to avoid damage to the device.
   • Use a stable power source to maintain consistent operation.

2. Start-Up Current (ISTART):

   • The device requires a typical current of 150 渭A to start up. Ensure the power supply can provide this current.

3. Quiescent Current (IQ):

   • The typical quiescent current is 200 渭A. This should be considered in power budget calculations.

4. Oscillator Frequency (fOSC):

   • The internal oscillator frequency ranges from 300 kHz to 700 kHz. Adjust external components if needed to achieve the desired frequency.

5. Minimum On-Time (tON(min)):

   • The minimum on-time for the high-side switch is 250 ns. Ensure the pulse width modulation (PWM) signals respect this limit.

6. Maximum Off-Time (tOFF(max)):

   • The maximum off-time for the high-side switch is 1500 ns. This helps in preventing excessive duty cycles.

7. Overcurrent Protection (IFault):

   • The device has an overcurrent protection threshold of 1.2 A. If the current exceeds this value, the device will shut down to protect itself.

8. Thermal Shutdown (TSD):

   • The device will initiate thermal shutdown at 150掳C to prevent damage from overheating. Ensure proper heat dissipation and cooling mechanisms are in place.

9. Operating Temperature Range (TOPR):

   • The device can operate in ambient temperatures ranging from -40掳C to 125掳C. Ensure the environment does not exceed these limits.

10. Storage Temperature Range (TSTG):

    • The device can be stored in temperatures ranging from -65掳C to 150掳C. Proper storage conditions should be maintained to ensure long-term reliability.

Additional Notes:

• Always refer to the datasheet for the most accurate and detailed information.
• Ensure all connections are secure and follow good PCB layout practices to minimize noise and interference.
• Test the device under various operating conditions to ensure it meets the design requirements.

(For reference only)