Details

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BUY BD9241F https://www.utsource.net/itm/p/12543476.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN		3.0		5.5	V
Output Voltage	VOUT	Fixed		3.3		V
Output Current	IOUT	Continuous		1.0		A
Quiescent Current	IQ	VIN = 5V, VOUT = 3.3V		2.0		μA
Dropout Voltage	VDROPOUT	IOUT = 500mA		0.4		V
PSRR (Power Supply Rejection Ratio)	PSRR	f = 1kHz		70		dB
Operating Temperature	TOPR	Storage	-40		85	°C

Instructions for BD9241F

1. Input Voltage Range:

   • Ensure the input voltage is within the range of 3.0V to 5.5V to avoid damage or improper operation.

2. Output Voltage Setting:

   • The output voltage is fixed at 3.3V. No external components are required to set this voltage.

3. Output Current Capability:

   • The device can provide a continuous output current up to 1.0A. Ensure that the load does not exceed this limit to prevent overheating or failure.

4. Quiescent Current:

   • The quiescent current is very low, typically 2.0μA at an input voltage of 5V and an output voltage of 3.3V. This makes the BD9241F suitable for battery-powered applications.

5. Dropout Voltage:

   • The dropout voltage is as low as 0.4V at a load current of 500mA. This allows the regulator to maintain regulation even when the input voltage is close to the output voltage.

6. Power Supply Rejection Ratio (PSRR):

   • The PSRR at 1kHz is 70dB, indicating good noise rejection from the input supply.

7. Operating Temperature:

   • The operating temperature range is from -40°C to 85°C. Ensure that the ambient temperature does not exceed these limits to ensure reliable operation.

8. Mounting and Layout:

   • Follow recommended PCB layout guidelines for optimal thermal performance and stability. Place the input and output capacitors close to the regulator to minimize noise and improve transient response.

9. Capacitor Selection:

   • Use ceramic capacitors with X7R dielectric for both input and output to ensure stable operation. Typical values are 1μF for input and 1μF for output.

10. Safety Considerations:

    • Always use appropriate protection circuits such as reverse polarity protection and overcurrent protection in your design.

(For reference only)