Details

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BUY LMR14020SDDA https://www.utsource.net/itm/p/12604056.html

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Input Voltage	VIN	3.0	-	42	V
Output Voltage	VOUT	-	5.0	-	V	Adjustable
Output Current	IOUT	-	2.0	2.1	A
Quiescent Current	IQ	-	65	-	渭A	VIN = 12V, VOUT = 5V, IOUT = 0A
Dropout Voltage	VDROPOUT	-	800	-	mV	IOUT = 2.1A
Reference Voltage	VREF	-	1.24	-	V
PSRR at 100 kHz	PSRR	-	60	-	dB
Load Regulation	未VOUT	-	0.2	-	%	IOUT: 0mA to 2.1A
Line Regulation	未VOUT	-	0.05	-	%/V	VIN: 3V to 42V
Operating Temperature	TOPR	-40	-	125	掳C	Storage Temp: -65掳C to 150掳C

Instructions:

1. Power Supply Connection:

   • Connect the input voltage (VIN) between the VIN pin and GND.
   • Ensure that the input voltage is within the specified range of 3V to 42V.

2. Output Configuration:

   • Set the output voltage (VOUT) by adjusting the external resistor network connected to the FB pin.
   • The output voltage can be adjusted based on the formula provided in the datasheet.

3. Capacitor Selection:

   • Use appropriate input and output capacitors as recommended in the datasheet for stability.
   • Typical values are 1渭F ceramic capacitors for both input and output.

4. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high output currents or high ambient temperatures.
   • Check the thermal resistance and power dissipation ratings.

5. Protection Features:

   • The device includes overcurrent protection and thermal shutdown features.
   • Verify that these features do not activate under normal operating conditions.

6. Layout Guidelines:

   • Follow good PCB layout practices to minimize noise and improve performance.
   • Keep the paths from VIN to GND and VOUT to GND short and direct.

7. Testing:

   • After assembly, test the circuit under various load conditions to ensure it meets the design specifications.
   • Monitor temperature and efficiency during testing.

(For reference only)