MC33486

MC33486 is a dual high side switch for automotive applications which incorporates a dual low side switch control feature. This device is designed to monitor two low side switches for typical DC-motor control in an H-Bridge configuration. MC33486 can be directly interfaced with a microcontroller for control and diagnostic functions, is PWM capable and has a self-adjusted switching speed for minimizing electromagnetic emission.

The High Side block MC33486 incorporates two 15mΩ Rdson N-Channel power Mosfets with senses and a control circuitry. Each output of this high side block is protected against short to gnd and load shorts, and has over temperature detection with hysteresis. MC33486 includes a current recopy feature for monitoring the load current. The control circuitry also has an overvoltage detector which turns off the bridge and protects the load in case of Vbat exceeding 28V.

The low side control block MC33486 is able to drive 2 low sides switches in a H-bridge configuration and protects them in case of short circuit. This, in combination with the High side protection, fully protects the H-bridge from shorted loads, shorts to Vbat and shorts to GND.

MC33486 offers a very low quiescent current in standby mode.