I use two LM7310s to control the battery (MAX 4.2V) and 12V power supply to power the LED drive circuit. However, when the 12V power supply is used to power the LED drive circuit, the LM7310 automatically turns off after about 6 seconds. The current through the LM7310 is approximately 2A, which is within the working range.The chip is not hot to the touch, Within the working temperature range.Removing the capacitor on the DVDT pin will Solve this problem.I would like to know Why did it happen?The LM7310 did not turn off under a fixed load of 3A on the VCC_WLED load tester with a 12V power supply on this board.
