Details

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BUY FAN4803 https://www.utsource.net/itm/p/12608287.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	4.5	-	5.5	V	Operating input voltage range
Output Current	IOUT	-	1.2	1.5	A	Maximum output current
Quiescent Current	IQ	-	0.7	1.0	mA	Supply current at no load
Shutdown Current	ISD	-	1	2	渭A	Current consumption in shutdown mode
Dropout Voltage	VDROPOUT	-	300	500	mV	Minimum difference between input and output voltage to maintain regulation
Load Regulation	-	-	1	2	%	Change in output voltage with load
Line Regulation	-	-	0.1	0.2	%/V	Change in output voltage with input voltage
Thermal Shutdown	TSD	-	160	180	掳C	Temperature at which the device enters thermal shutdown
Operating Temperature	TOP	-40	-	85	掳C	Ambient temperature range for normal operation

Instructions:

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the input pin.
   • Ensure the input voltage is within the specified range (4.5V to 5.5V).

2. Output Configuration:

   • Connect the output pin to the load.
   • The FAN4803 can provide up to 1.5A of output current.

3. Grounding:

   • Connect the ground (GND) pin to the common ground of the circuit.

4. Shutdown Mode:

   • To put the device into shutdown mode, connect the SHDN pin to GND.
   • In shutdown mode, the device consumes less than 2渭A of current.

5. Thermal Management:

   • Ensure proper heat dissipation to prevent the device from reaching the thermal shutdown temperature (160掳C to 180掳C).
   • Use a heatsink if necessary, especially under high load conditions.

6. Capacitor Selection:

   • Place a 1渭F ceramic capacitor close to the input pin to stabilize the input voltage.
   • Optionally, place a 1渭F ceramic capacitor on the output pin to improve transient response and stability.

7. PCB Layout:

   • Keep the traces short and wide to minimize parasitic inductance and resistance.
   • Ensure good thermal management by providing adequate copper area for heat dissipation.

8. Operating Temperature:

   • The device is designed to operate within the temperature range of -40掳C to 85掳C.
   • Avoid operating the device outside this range to prevent damage or reduced performance.

(For reference only)