Toshiba TCK421G MOSFET gate driver IC

Toshiba Electronic Devices & Storage has released the TCK421G for 20 V power lines as the first product in its TCK42xG series of MOSFET gate driver ICs. Devices in the series are dedicated to gate voltage control of an external N-channel MOSFET, based on input voltage, and have an overvoltage lockout function.

The IC is suitable for configuring power multiplexer circuits or load switch circuits equipped with reverse-current blocking, in combination with a back-to-back connection of external N-channel MOSFETs. It incorporates a charge pump circuit that supports a wide range of input voltages, from 2.7 to 28 V, and supplies stable voltage to the gate-source voltage of external MOSFETs with its intermittent operation. This allows switching of large currents.

Housed in a WCSP6G package, said to be one of the smallest in the industry, the product realises high-density mounting in small devices, such as wearable devices and smartphones, helping to reduce their footprint.