OBSOLETE – PART DISCONTINUED PART OBSOLETE NO ALTERNATE PART ZXGD3109N8 SYNCHRONOUS MOSFET CONTROLLER IN SO-8 Description The ZXGD3109N8 is intended to drive a MOSFET configured as an ideal diode replacement.
The device is comprised of a high-voltage detector stage and gate driver.
The detector monitors the voltage between the drain and the source of the MOSFET, and if this voltage is less than the turn-on threshold voltage of the controller, a positive voltage is applied to the MOSFET’s Gate Pin.
As the load current decays to zero, and the voltage between the drain and source of the MOSFET increases beyond the turn-off threshold value, the MOSFET is rapidly turned off.
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