Si8751AB-IS Isolated FET Driver

The new Si8751AB-IS driver offers a simple way for customers to replace solid-state relays (SSRs) or electromechanical relays (EMRs). The Si8751AB-IS combines robust CMOS isolation technology with a FET driver to form a complete, isolated switch. Versatile inputs provide digital CMOS pin control (Si8751) or diode emulation (Si8752) to best suit the application, plus flexible outputs to support driving AC or DC load configurations. A floating secondary side DC voltage source is unnecessary as the self-contained product generates its own gate drive output voltage, reducing cost, size, and complexity. The Si8751AB-IS eliminates the need for bulky mechanical relays which can be difficult to assemble onto PCBs and add switching noise to the system. The Si8751AB-IS supports full industrial and automotive temperature ranges with increased stability and longer life-time.  Input side voltages are flexible from 2.25 V to 5.5 V supporting seamless connection to low-power controllers. The Si8751AB-IS devices provide a clamping device to prevent unintended turn on of the external FET when a high dV/dt is present on the FET’s drain. Further, its 2.5 kVrms isolation rating forms the basis for full certification to UL, CSA, VDE, and CQC.

View Datasheet for all specifications
Specifications Summary

Isolation Rating (kVrms): 2.5

Peak Output Current: External FET Specific

Package Type: NB SOIC8

AEC-Q100: Yes

Development Tools Type
Si8751 Isolated FET Driver Evaluation Kit Evaluation Kits

Contact Sales Contact Sales
Loading Results