TMC249A

TMC249 / TMC249A DATA SHEET (V2.10 / 2011-Aug-10) 1 TMC249/A – DATASHEET High current microstep stepper motor driver with stallGuard™, protection / diagnostics and SPI Interface TRINAMIC Motion Control GmbH & Co KG Hamburg, Germany ® www.trinamic.com Features The TMC249 / TMC249A (1) is a dual full bridge driver IC for bipolar stepper motor control applications. The TMC249 is realized in a HVCMOS technology and directly drives eight external LowRDS-ON high efficiency MOSFETs. It supports more than 6000mA coil current. The low power dissipation makes the TMC249 an optimum choice for drives, where a high reliability is desired. With additional drivers, motor current and voltage can be increased. The integrated unique sensorless stall detection (pat. pend.) stallGuard™ makes it a good choice for applications, where a reference point is needed, but where a switch is not desired. Its ability to predict an overload makes the TMC249 an optimum choice for drives, where a high reliability is desired. Internal DACs allow microstepping as well i as smart current control. The device can be controlled by a serial interface (SPI™ ) or by analog / digital input signals. Short circuit, temperature, undervoltage and overvoltage protection are integrated.                 More than 6000mA using 8 external MOS transistors (e.g. 4A RMS) Sensorless stall detection stallGuard™ and load measurement integrated Control via SPI with easy-to-use 12 bit protocol or external analog /...