Details

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BUY AP2952A https://www.utsource.net/itm/p/12611690.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating Range	2.7	-	5.5	V
Output Voltage	VOUT	Adjustable	-	-	-	V
Output Current	IOUT	Continuous	-	1.5	3.0	A
Quiescent Current	IQ	VIN = 5V, No Load	-	20	-	渭A
Shutdown Current	ISD	VIN = 5V	-	0.1	-	渭A
Dropout Voltage	VDROPOUT	IOUT = 300mA	-	300	-	mV
Switching Frequency	fSW	Fixed	-	1.2	-	MHz
Efficiency	畏	VIN = 5V, VOUT = 3.3V, IOUT = 300mA	-	90	-	%

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the operating range of 2.7V to 5.5V.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted according to the application requirements using external resistors.

3. Output Current (IOUT):

   • The device supports continuous output currents up to 3.0A. For optimal performance, do not exceed this limit.

4. Quiescent Current (IQ):

   • The quiescent current is typically 20渭A when there is no load and the input voltage is 5V.

5. Shutdown Current (ISD):

   • When in shutdown mode, the current consumption drops to approximately 0.1渭A at an input voltage of 5V.

6. Dropout Voltage (VDROPOUT):

   • At an output current of 300mA, the dropout voltage is typically 300mV.

7. Switching Frequency (fSW):

   • The switching frequency is fixed at 1.2MHz.

8. Efficiency (畏):

   • Under typical conditions with VIN = 5V, VOUT = 3.3V, and IOUT = 300mA, the efficiency is around 90%.

9. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high output currents or in high ambient temperatures.

10. PCB Layout:

    • Follow recommended PCB layout guidelines to ensure stable operation and minimize electromagnetic interference (EMI).

11. Capacitor Selection:

    • Choose input and output capacitors based on the datasheet recommendations to maintain stability and performance.

(For reference only)