Details

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BUY KIA78D33AF https://www.utsource.net/itm/p/12600702.html

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Input Voltage	VIN	Continuous	4.5	-	20	V
Output Voltage	VOUT	Fixed	-	3.3	-	V
Output Current	IOUT	Continuous	-	-	1.5	A
Dropout Voltage	VDROPOUT	IOUT = 1.5A	-	1.2	-	V
Quiescent Current	IQ	VIN = 5V, VOUT = 3.3V	-	5	-	mA
Shutdown Current	ISD	VIN = 5V, SHDN = 0V	-	0.1	-	渭A
Thermal Shutdown	TSD	-	-	160	-	掳C
Operating Temperature	TOPR	-	-40	-	85	掳C
Storage Temperature	TSTG	-	-65	-	150	掳C

Instructions for Using KIA78D33AF

1. Input Voltage:

   • Ensure the input voltage is within the range of 4.5V to 20V.
   • Do not exceed the maximum input voltage to avoid damaging the regulator.

2. Output Voltage:

   • The output voltage is fixed at 3.3V. No external resistors are required for voltage adjustment.

3. Output Current:

   • The maximum continuous output current is 1.5A. Ensure that the load does not exceed this limit to prevent overheating or damage.

4. Dropout Voltage:

   • The dropout voltage is typically 1.2V at full load (1.5A). Ensure that the input voltage is at least 1.2V higher than the output voltage to maintain regulation.

5. Quiescent Current:

   • The quiescent current is typically 5mA. This is the current consumed by the regulator when it is active but not supplying any load.

6. Shutdown Current:

   • When the shutdown pin (SHDN) is pulled low (0V), the regulator enters a low-power mode with a typical shutdown current of 0.1渭A.

7. Thermal Shutdown:

   • The regulator has built-in thermal protection that activates at approximately 160掳C. If the temperature exceeds this threshold, the regulator will shut down to prevent damage.

8. Operating Temperature:

   • The operating temperature range is from -40掳C to 85掳C. Ensure that the regulator operates within this range to maintain reliability.

9. Storage Temperature:

   • The storage temperature range is from -65掳C to 150掳C. Store the regulator in a dry, cool place to ensure its longevity.

10. PCB Layout:

    • Use a good PCB layout with adequate copper area for heat dissipation.
    • Place the input and output capacitors close to the regulator to minimize noise and improve stability.

11. Capacitors:

    • Use a 10渭F tantalum or ceramic capacitor on the input side and a 10渭F tantalum or ceramic capacitor on the output side for stability and filtering.

12. Shutdown Pin:

    • To enable the regulator, connect the shutdown pin to the input voltage (VIN).
    • To disable the regulator, pull the shutdown pin to ground (0V).

13. Handling:

    • Handle the regulator with care to avoid static damage. Use proper ESD precautions when handling and installing the component.

(For reference only)