onsemi UC3842BD1R2G: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	Vcc	Operating	16		40	V
		Start-up	12			V
Operating Temperature	Topr	Junction	-40		150	°C
Switching Frequency	fsw	Typical		100	500	kHz
Current Limit	ILIM		1.2		2.7	A
Error Amplifier Transconductance	gme		300			μS
Slope Compensation	SCOMP			100		mV/μs
Reference Voltage	Vref		2.5			V
Maximum Duty Cycle	Dmax			50		%

Power Supply Considerations:
- Ensure the supply voltage (Vcc) is within the operating range of 16V to 40V.
- For start-up, the supply voltage should be at least 12V.
Temperature Management:
- Operate the device within the junction temperature range of -40°C to 150°C to avoid thermal damage.
Frequency Setting:
- Set the switching frequency between 100kHz and 500kHz as per application requirements.
Current Limit Adjustment:
- Adjust the current limit between 1.2A and 2.7A using external components to prevent overcurrent conditions.
Error Amplifier Usage:
- Utilize the error amplifier transconductance (gme) of 300 μS for feedback loop stability.
Slope Compensation:
- Apply slope compensation of approximately 100 mV/μs to stabilize the control loop under varying load conditions.
Reference Voltage:
- Use the internal reference voltage of 2.5V for setting up the feedback network.
Duty Cycle Control:
- Maintain the duty cycle below 50% to ensure stable operation and prevent saturation issues in the power stage.

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

(For reference only)