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NCP12401EBAAA1 Datasheet(PDF) 3 Page - ON Semiconductor |
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NCP12401EBAAA1 Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 44 page NCP12401 www.onsemi.com 3 Table 3. PIN FUNCTION DESCRIPTION Pin # Pin Name Function Pin Description 1 FAULT FAULT Input Pull the pin up or down to stop the controller. An internal current source allows the direct connection of an NTC for over temperature detection. Device can restart in autorecovery mode or can be latched depending on the option. 2 FB Feedback + Shutdown Pin An optocoupler connected to ground controls the output regulation. The part goes to the low consumption Off mode if the FB input pin is pulled to GND. 3 CS Current Sense This input senses the primary current for current−mode operation, and offers an overpower compensation adjustment. This pin implements over voltage protection as well. 4 GND The controller ground. 5 DRV Drive Output Drives external MOSFET. 6 VCC VCC Input This supply pin accepts up to 28 Vdc, with overvoltage detection. The pin is connected to an external auxiliary voltage. 8 HV High−Voltage Pin Connects to the rectified ac line to perform the functions of start−up current source, Self−Supply, brown−out detection and X2 capacitor discharge function and the HV sensing for the overpower protection purposes. It is not allowed to connect this pin to a dc voltage. |
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