MAX22204ATU+

MAX22204ATU+ is a 65V, 3.8A stepper motor driver with integrated current-sense and 128 Usteps indexer. It integrates two 65V, 3.8AMAX H-Bridges. The H-Bridge FETs have very low impedance, resulting in high driving efficiency and minimal heat. The typical total RON (high side + low-side) is 0.3ohm. It integrates an accurate current drive regulation circuit and a 128-microstep built-in indexer controlled by a STEP/DIR interface. The high microstep resolution and advanced control technique ensure smooth and quiet operations. It features overcurrent protection (OCP), thermal shutdown (TSD), and undervoltage lockout (UVLO). An open drain active low FAULT pin is activated every time a fault condition is detected. During thermal shutdown and undervoltage lockout, the driver is disabled until normal operating conditions are restored. It is ideal for stepper motor driver application.

• Integrated current control, full-scale DAC current configurable with external resistance
• One logic input (TRQ) to quickly change the torque among two levels
• Internal current sensing (ICS) eliminates external bulky resistors and improves efficiency
• Built-in-control with 128-usteps indexer, STEP/DIR interface
• Integrated DAC and sequencer for U-stepping, multiple decay modes (slow, mixed, adaptive)
• Fixed OFF time configurable with external resistance
• Current-sense output (ISENA, ISENB) current monitor
• Overcurrent protection for each individual channel (OCP), undervoltage lockout (UVLO)
• 38-pin TQFN package
• Temperature range from -40°C to +125°C

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