Details

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BUY AP8048B https://www.utsource.net/itm/p/12591842.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	V_IN	Continuous	2.7	-	5.5	V
Output Voltage	V_OUT	Fixed	1.8	-	3.3	V
Output Current	I_OUT	Continuous	-	600	800	mA
Quiescent Current	I_Q	V_IN = 5V	-	2	4	μA
Shutdown Current	I_SD	VIN = 5V	-	0.1	0.5	μA
Dropout Voltage	V_DO	I_OUT = 300mA	-	300	500	mV
Operating Temperature	T_OP		-40	-	85	°C

Instructions for AP8048B

1. Input Connection:

   • Connect the input voltage (2.7V to 5.5V) to the Vin pin.
   • Ensure a bypass capacitor (typically 1μF ceramic) is placed close to the Vin pin for stability.

2. Output Configuration:

   • The output voltage is fixed and does not require external resistors for setting the voltage.
   • Place an output capacitor (at least 1μF) at the Vout pin to ensure stable operation.

3. Enable/Shutdown:

   • The device can be enabled or shut down using the EN pin.
   • Apply a logic high (above 1.2V) to enable the regulator.
   • Pull the EN pin low (below 0.4V) to put the regulator into shutdown mode, reducing power consumption.

4. Thermal Considerations:

   • For applications where the output current is near the maximum, ensure adequate heat dissipation.
   • Monitor the operating temperature to avoid exceeding the maximum specified limit of 85°C.

5. PCB Layout:

   • Keep the layout compact with short traces between the input and output capacitors and the regulator pins.
   • Use wide traces for power paths to minimize inductance and resistance.

6. Protection Features:

   • The AP8048B includes internal protections such as over-temperature and over-current protection to safeguard the device under fault conditions.

(For reference only)