STMicroelectronics has announced the launch of a new L99DZ200G door-zone system IC that delivers benefits including lower system quiescent current, greater reliability, faster assembly, reduced bill of materials, and shorter development time. This new IC enables a single-chip front-drives-rear setup managing a front-door window, mirror, and lighting as well as the rear-window lift. It provides power management, with two 5V low-dropout regulators for the host microcontroller and peripherals.
The device contains two H-bridge gate drivers, a gate driver for an external MOSFET to control mirror heating, a control block and high-side driver for electro-chromic mirror dimming, and five LED high-side drivers. Three of the high-side drivers can operate in a constant-current mode to power lighting modules that have high input capacitance. The other two high-side drivers are suitable for controlling ordinary LEDs.
With its two H-bridge drivers, this IC can control two spindle motors simultaneously and handle an additional cinch motor to close a powered tailgate or trunk. Moreover, both drivers allow operation in generator mode, which activates both low-side MOSFETs to protect the device if an overvoltage is detected in the supply rail.
Packaged as a 10mm x 10mm LQFP64, this AEC-Q100 qualified IC is in production now and pricing starts from $4.2 for orders of 1000 pieces.
