Details

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BUY MAX505BCN https://www.utsource.net/itm/p/12606595.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	V_IN		2.7		5.5	V
Output Voltage	V_OUT		0.0		V_IN	V
Quiescent Current	IQ	V_IN = 5V		10		渭A
Load Current	I_LOAD	Continuous	0		300	mA
Shutdown Current	ISD	V_SHDN = 0V		0.1		渭A
Dropout Voltage	V_DROPOUT	I_LOAD = 300mA		0.4		V
Power Supply Rejection Ratio	PSRR	1kHz		-70		dB

Instructions for MAX505BCN

1. Power Supply Connection:

   • Connect the input voltage (V_IN) to the power supply within the specified range of 2.7V to 5.5V.
   • Ensure that the power supply is stable and free from noise to avoid any disturbance in output regulation.

2. Output Configuration:

   • The output voltage (V_OUT) can be adjusted up to the input voltage level.
   • Use external resistors if necessary to set the desired output voltage.

3. Quiescent Current Consideration:

   • The device operates with a quiescent current of typically 10渭A at 5V input, which helps in maintaining efficiency.

4. Load Management:

   • The device can handle a continuous load current up to 300mA.
   • For loads exceeding this limit, consider using additional heat sinking or a higher capacity regulator.

5. Shutdown Feature:

   • Apply a low signal (0V) to the shutdown pin (V_SHDN) to place the device in a low-power state, reducing the current draw to approximately 0.1渭A.

6. Dropout Voltage:

   • At full load (300mA), the dropout voltage is typically 0.4V. Ensure the input voltage is sufficiently higher than the required output voltage to maintain regulation.

7. Power Supply Rejection Ratio (PSRR):

   • The device provides a PSRR of -70dB at 1kHz, effectively filtering out ripple and noise from the input supply.

8. PCB Layout Recommendations:

   • Place the device close to the load to minimize trace resistance and inductance.
   • Use bypass capacitors near the input and output pins to improve transient response and stability.

(For reference only)