Details

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BUY AMS1117-3.3 SOT-223 CHINA ORIGINAL https://www.utsource.net/itm/p/11258277.html

Parameter	Symbol	Min	Typ	Max	Unit
Input Voltage	VI	1.0	-	15	V
Output Voltage	VO	-	3.3	-	V
Output Current	IO	-	800	-	mA
Dropout Voltage	VD	-	1.3	-	V
Quiescent Current	IQ	-	5	-	mA
Load Regulation	-	-	0.5	-	%
Line Regulation	-	-	0.1	-	%/V
Ripple Rejection	-	-	60	-	dB
Operating Temperature	TJ	-40	-	125	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Use:

1. Input Voltage:

   • Ensure the input voltage is within the range of 1.0V to 15V.
   • The higher the input voltage, the more power dissipation will occur, which can lead to increased temperature.

2. Output Voltage:

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

3. Output Current:

   • The device can provide up to 800mA of output current. Ensure the load does not exceed this limit to avoid overheating and potential damage.

4. Dropout Voltage:

   • The dropout voltage is typically 1.3V. This means the input voltage should be at least 1.3V higher than the output voltage (3.3V) to ensure stable regulation.

5. Quiescent Current:

   • The quiescent current is typically 5mA. This is the current consumed by the regulator when no load is connected.

6. Load Regulation:

   • The load regulation is typically 0.5%, meaning the output voltage will change by 0.5% for a full load change.

7. Line Regulation:

   • The line regulation is typically 0.1% per volt, indicating how much the output voltage changes with variations in the input voltage.

8. Ripple Rejection:

   • The ripple rejection is typically 60dB, which helps in filtering out noise from the input voltage.

9. Operating Temperature:

   • The operating temperature range is from -40掳C to 125掳C. Ensure the ambient temperature and heat dissipation are managed to keep the device within this range.

10. Storage Temperature:

    • The storage temperature range is from -65掳C to 150掳C. Store the device in a dry, cool place to prevent damage.

11. Mounting:

    • Mount the AMS1117-3.3 in a well-ventilated area to facilitate heat dissipation. Consider using a heatsink if the device will be operating at high currents or in high ambient temperatures.

12. Capacitors:

    • Use a 10uF tantalum capacitor on the input side and a 10uF tantalum capacitor on the output side for stability and better performance. Ensure these capacitors are rated for the appropriate voltage.

13. PCB Layout:

    • Keep the input and output capacitors as close as possible to the regulator to minimize inductance and improve transient response.

14. Power Dissipation:

    • Calculate the power dissipation using the formula ( P = (VI - VO) times IO ). Ensure the power dissipation does not exceed the maximum allowable for the package to avoid thermal issues.

(For reference only)