Details

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BUY AP3988AMTR-G1 https://www.utsource.net/itm/p/12609917.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VIN	2.5	-	5.5	V
Output Voltage	VOUT	-	3.3	-	V
Output Current	IOUT	-	300	-	mA
Quiescent Current	IQ	-	35	-	渭A
Shutdown Current	ISD	-	0.1	-	渭A
Dropout Voltage	VDROPOUT	-	0.3	-	V
Operating Temperature	TOPR	-40	-	85	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Using AP3988AMTR-G1

1. Circuit Configuration:

   • Connect the input voltage (VIN) to the power supply.
   • Connect the output voltage (VOUT) to the load.
   • Ensure that the input voltage is within the specified range (2.5V to 5.5V).

2. Capacitors:

   • Use a 1渭F ceramic capacitor (X7R or X5R) between VIN and GND, placed as close as possible to the device.
   • Use a 1渭F ceramic capacitor (X7R or X5R) between VOUT and GND, placed as close as possible to the device.

3. Shutdown Pin (SHDN):

   • To enable the regulator, connect the SHDN pin to GND or leave it floating.
   • To disable the regulator, connect the SHDN pin to VIN or apply a logic high signal.

4. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high output currents.
   • The device can operate up to 85掳C ambient temperature under normal conditions.

5. PCB Layout:

   • Keep the PCB traces short and wide to minimize inductance and resistance.
   • Place the input and output capacitors as close as possible to the respective pins to ensure stability.

6. Storage and Handling:

   • Store the device in a dry environment to prevent moisture damage.
   • Handle with care to avoid static discharge, which can damage the device.

7. Testing:

   • Before finalizing the design, test the circuit under various conditions to ensure stable operation.
   • Measure the output voltage and current to verify that they meet the required specifications.

For more detailed information, refer to the datasheet provided by the manufacturer.

(For reference only)