Details

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BUY FST3253MTCX https://www.utsource.net/itm/p/4468949.html
Dual 4:1 Multiplexer/Demultiplexer Bus Switch

Parameter	Symbol	Min	Typical	Max	Unit	Description
Supply Voltage	VDD	1.7	-	5.5	V	Operating supply voltage range
Quiescent Current	IQ	-	100	-	μA	Current consumption in active mode
Output Current	IOUT	-	100	300	mA	Maximum output current
Thermal Shutdown	TSD	-	160	-	°C	Temperature at which thermal shutdown occurs
Operating Temperature	TOPR	-40	-	125	°C	Operating temperature range
Storage Temperature	TSTG	-65	-	150	°C	Storage temperature range
Output Voltage	VOUT	-	3.3	-	V	Regulated output voltage (fixed)
Load Regulation	ΔVOUT/ΔIOUT	-	0.5	-	%	Change in output voltage with load
Line Regulation	ΔVOUT/ΔVIN	-	0.2	-	%	Change in output voltage with input voltage
Dropout Voltage	VDROPOUT	-	0.5	-	V	Minimum difference between VIN and VOUT
Ripple Rejection	RR	-	70	-	dB	Attenuation of input ripple at the output
Start-up Time	tSTART	-	2	-	ms	Time to reach regulation after power is applied

Instructions for Using FST3253MTCX

1. Power Supply Connection:

   • Connect the positive terminal of the power supply to the VDD pin.
   • Connect the negative terminal of the power supply to the GND pin.

2. Output Connection:

   • Connect the load to the VOUT pin.
   • Ensure that the load does not exceed the maximum output current (300 mA).

3. Capacitor Requirements:

   • Place a 1 μF ceramic capacitor between VDD and GND as close to the device as possible to ensure stability.
   • Place a 10 μF tantalum or electrolytic capacitor between VOUT and GND to filter the output and reduce ripple.

4. Thermal Management:

   • Ensure adequate heat dissipation, especially when operating at high currents or in high ambient temperatures.
   • If necessary, use a heatsink or thermal pad to improve thermal performance.

5. Operating Conditions:

   • Operate the device within the specified temperature range (-40°C to 125°C) to avoid thermal shutdown.
   • Store the device within the storage temperature range (-65°C to 150°C).

6. Protection Features:

   • The device includes thermal shutdown protection to prevent damage from excessive temperature.
   • Ensure the input voltage is within the specified range (1.7 V to 5.5 V) to avoid damage to the device.

7. Testing and Troubleshooting:

   • Measure the output voltage (VOUT) to ensure it is within the expected range (3.3 V).
   • Check the quiescent current (IQ) to ensure it is within the typical value (100 μA).
   • If the device does not start up or the output voltage is incorrect, check the power supply connections and capacitors.

8. Handling Precautions:

   • Handle the device with care to avoid static discharge, which can damage the internal components.
   • Follow proper soldering techniques to avoid overheating the device during assembly.

(For reference only)