The highly integrated ATA6026 motor driver IC is the first member of a new family of devices from Atmel. It is used to drive continuous-current motors in full H-bridge configurations, and supports PWM and direction-controlled driving of four power MOSFETs. Designed using Atmel's high-voltage BCDMOS process it is ideal for applications in harsh environments. Due to an optimised communication interface, the IC is well suited for high-volume DC motor applications such as windshield wiper systems, door locks, or seat position adjusters. The IC includes a differential SCI transceiver to reduce radiation emission for improved EMC, useful since the device is usually located close to the car radio. As the SCI interface handles the synchronisation between the left and right wiper, no mechanical link between the wipers is necessary. The SCI functionality makes the ATA6026 very similar to LIN devices; however, a faster data transfer of up to 100 Kbaud is possible. The gate driver IC in QFN32 package includes a 5 V/100 mA voltage regulator plus a window watchdog resulting in fewer external components for smaller designs requiring less PCB area - a critical issue with automotive applications.
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