Details

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BUY PM75CHA060 https://www.utsource.net/itm/p/6527942.html
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Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	V_IN	Operating Range	4.5	-	60	V
Output Voltage	V_OUT	Adjustable Range	1.2	-	38	V
Switching Frequency	f_SW		-	650	-	kHz
Quiescent Current	I_Q	No Load	-	70	-	渭A
Efficiency	畏	At 5V in, 3.3V out	-	90	-	%
Output Current	I_OUT	Continuous	-	-	3	A
Shutdown Current	I_SD	V_SHDN = 0V	-	1	-	渭A
Operating Temperature	T_OP	Junction	-40	-	125	掳C

Instructions for PM75CHA060

1. Power Supply Connection:

   • Connect the input voltage (V_IN) to the power supply ensuring it is within the operating range of 4.5V to 60V.

2. Output Configuration:

   • Adjust the output voltage (V_OUT) using the external resistor divider network according to the formula provided in the datasheet.

3. Frequency Setting:

   • The switching frequency is fixed at 650kHz. Ensure this frequency is suitable for your application.

4. Quiescent and Shutdown Currents:

   • Monitor the quiescent current which should be around 70渭A under no-load conditions.
   • For shutdown, apply a low signal to the shutdown pin (V_SHDN) to reduce current consumption to approximately 1渭A.

5. Thermal Considerations:

   • Operate within the junction temperature range of -40掳C to 125掳C to ensure reliable performance.

6. Output Current Capability:

   • The device can deliver up to 3A continuously. Ensure proper heat sinking if operating near the maximum current limit.

7. Efficiency Monitoring:

   • Check efficiency at typical operating conditions (e.g., 5V input, 3.3V output), aiming for around 90% efficiency.

8. Protection Features:

   • Utilize built-in protection features such as overcurrent and thermal shutdown to safeguard the device against faults.

(For reference only)