Details

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BUY L83S471 https://www.utsource.net/itm/p/12608843.html

Parameter	Description	Min	Typ	Max	Unit
Input Voltage (VIN)	Operating input voltage range	2.5	-	5.5	V
Output Voltage (VOUT)	Fixed output voltage	-	3.3	-	V
Output Current (IOUT)	Continuous output current	-	400	600	mA
Quiescent Current (IQ)	Supply current under no load	-	1.2	-	mA
Dropout Voltage (VDROP)	Voltage difference between VIN and VOUT for regulation	-	350	-	mV
Load Regulation	Change in output voltage due to load change	-	0.5	-	%
Line Regulation	Change in output voltage due to input voltage change	-	0.1	-	%
Thermal Shutdown Temperature (TSD)	Temperature at which the device shuts down to prevent damage	-	160	-	掳C
Operating Junction Temperature (TJ)	Range of temperatures over which the device can operate	-40	-	125	掳C
Storage Temperature (TSTG)	Range of temperatures over which the device can be stored	-65	-	150	掳C

Instructions for Use:

1. Input Voltage:

   • Ensure the input voltage is within the specified range (2.5V to 5.5V).
   • Do not exceed the maximum input voltage to avoid damaging the device.

2. Output Voltage:

   • The L83S471 provides a fixed output voltage of 3.3V. No external resistors are required for setting the output voltage.

3. Output Current:

   • The device can provide a continuous output current of up to 600mA, with a typical value of 400mA.
   • For higher currents, ensure adequate heat dissipation to prevent thermal shutdown.

4. Quiescent Current:

   • The quiescent current is typically 1.2mA under no load conditions.

5. Dropout Voltage:

   • The dropout voltage is typically 350mV, meaning the input voltage must be at least 350mV higher than the output voltage to maintain regulation.

6. Load and Line Regulation:

   • The load regulation is typically 0.5%, and the line regulation is typically 0.1%. These values indicate the stability of the output voltage under varying load and input conditions.

7. Thermal Management:

   • The device has a thermal shutdown temperature of 160掳C to protect against overheating.
   • Ensure the operating junction temperature (TJ) remains within the range of -40掳C to 125掳C.

8. Storage:

   • Store the device in an environment where the temperature ranges from -65掳C to 150掳C.

9. PCB Layout:

   • Place the input and output capacitors as close as possible to the device to minimize noise and improve stability.
   • Use a good ground plane to ensure proper heat dissipation and reduce electromagnetic interference (EMI).

10. Capacitors:

    • Use a 1渭F ceramic capacitor on the input side and a 1渭F ceramic capacitor on the output side for stability and filtering.
    • For better transient response, you can use additional capacitors as needed.

(For reference only)