High Speed Single/Dual N-Channel MOSFET Drivers

The LTC1693 family drives power N-channel MOSFETs at high speed. The 1.5A peak output current reduces switching losses in MOSFETs with high gate capacitance.

The LTC1693-1 contains two noninverting drivers while the LTC1693-2 contains one noninverting and one inverting driver. These dual drivers are electrically isolated and independent. The LTC1693-3 is a single driver with an output polarity select pin.

All MOSFET drivers offer VCC independent CMOS input thresholds with 1.2V of typical hysteresis. They can level-shift the input logic signal up or down to the rail-to-rail VCC drive for the external MOSFET.

The LTC1693 contains an undervoltage lockout circuit and a thermal shutdown circuit that disable the external N-channel MOSFET gate drive when activated.

The LTC1693-1 and LTC1693-2 come in an 8-lead SO package. The LTC1693-3 comes in an 8-lead MSOP package.

Applications

* Power Supplies

* High/Low Side Drivers

* Motor/Relay Control

* Line Drivers

* Charge Pumps

* Dual MOSFET Drivers in SO-8 Package or Single MOSFET Driver in MSOP Package

* 1GΩ Electrical Isolation Between the Dual Drivers Permits High/Low Side Gate Drive

* 1.5A Peak Output Current

* 16ns Rise/Fall Times at VCC = 12V, CL = 1nF

* Wide VCC Range: 4.5V to 13.2V

* CMOS Compatible Inputs with Hysteresis, Input Thresholds are Independent of VCC

* Driver Input Can Be Driven Above VCC

* Undervoltage Lockout

* Thermal Shutdown