Details

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BUY PM75RLA120 https://www.utsource.net/itm/p/10011412.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Continuous	4.5		28	V
Output Voltage	VOUT	Adjustable		1.2	20	V
Output Current	IOUT	Continuous			3	A
Switching Frequency	fSW			600		kHz
Efficiency	η	@ VIN=12V, IOUT=1A	85			%
Quiescent Current	IQ	No load		10		μA
Dropout Voltage	VDROPOUT	@ IOUT=3A		1.2		V
Operating Temperature	TOPR	Storage	-40		85	°C

Instructions for PM75RLA120

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the power supply within the range of 4.5V to 28V.
   • Ensure proper grounding and use adequate decoupling capacitors near the input pin.

2. Output Configuration:

   • Adjust the output voltage (VOUT) using external resistors if necessary. The adjustable range is from 1.2V to 20V.
   • Verify that the load does not exceed the maximum output current of 3A continuously.

3. Switching Frequency Setting:

   • The switching frequency is fixed at 600kHz. This setting helps in minimizing the size of external components like inductors and capacitors.

4. Thermal Considerations:

   • Operate the device within the temperature range of -40°C to 85°C.
   • Provide adequate heat sinking if operating at high currents or in high ambient temperatures.

5. Efficiency Monitoring:

   • Monitor efficiency especially when operating at VIN=12V and IOUT=1A, where typical efficiency is around 85%.

6. Quiescent Current:

   • At no load, the quiescent current should be around 10μA to minimize power consumption in standby mode.

7. Dropout Voltage:

   • Ensure the dropout voltage does not exceed 1.2V when operating at full load (3A) to maintain stable output.

8. Protection Features:

   • The device includes built-in protection features such as overcurrent and thermal shutdown. Ensure these are enabled and functioning correctly.

(For reference only)