The SY21401 is a current mode DC/DC controller targeted for Boost, SEPIC, Flyback and Forward applications. The SY21401 has an accurate DC input current limit. External compensation provides flexible adjustment of control loops for different applications. The internal low side driver is capable of sourcing 1.5A and sinking 3A current.

High Performance, High Fidelity 20W Digital Audio-Power Amplifier

High Performance, High Fidelity 20W Digital Audio-Power Amplifier

Analog Class-D AUDIO IC for Automotive Application

ZVS Flyback SR Switcher

The SY21412A is a current mode DC/DC controller targeted for both boost and SEPIC applications. SY21412A has accurate output current limit. External compensation provides flexible adjustment of control loops for different applications. The internal low side driver is capable of sourcing 1.5A and sinking 3A current.

Ultra-Low Capacitance TVS Protection

60V High Current Boost LED Driver

33 Channel Multiple Switch Detection Interface With Adjustable Wetting Current for Automotive Applications

22 Channel Multiple Switch Detection Interface With Adjustable Wetting Current for Automotive Applications