MAX22210AUI+

Overview

The MAX22210AUI+T is a dual half-bridge motor driver designed for stepper and brushed DC motors, operating within a 4.5V to 36V supply range. It integrates two H-bridges with a typical total on-resistance of 0.25Ω, supporting peak currents up to 3.8A per bridge. The device features an integrated 128-step microstepping indexer controlled via STEP/DIR interface, non-dissipative current sensing, and configurable PWM off-time. Protection mechanisms include overcurrent protection (OCP), thermal shutdown (TSD) at +165°C junction temperature, and under-voltage lockout (UVLO). It is available in a TSSOP-28 package.

Feature Summary

• Integrates a 128-step microstepping indexer with STEP/DIR interface for smooth motor operation
• Utilizes non-dissipative integrated current sensing to eliminate external power resistors
• Supports multiple decay modes including slow, mixed, and adaptive configurations
• Provides comprehensive fault protection with open-drain FAULT pin indication

Applications

• Stepper motor control systems requiring high microstep resolution
• Brushed DC motor drivers in industrial automation
• Ignition controllers and motion control applications
• Systems demanding efficient heat management in compact form factors

Procurement Notes

Verify the specific suffix 'AUI+T' against the manufacturer's official datasheet to confirm the TSSOP-28 surface-mount packaging and tape-and-reel shipping configuration. Ensure compatibility with the required voltage range and thermal dissipation requirements for your PCB layout. Cross-reference the RoHS compliance status and lead time constraints directly with authorized distributors or Analog Devices sales representatives prior to ordering.

Selection Notes

Select this component when designing systems that require precise microstepping without external FPGA or complex logic. The integrated current sensing simplifies bill of materials by removing bulky sense resistors. Consider the thermal performance limits; while peak current reaches 3.8A, continuous RMS current is limited by thermal characteristics. Evaluate the need for adaptive decay modes to optimize torque and reduce noise in your specific motor application.

Part Context

The MAX22210 belongs to the Maxim Integrated motor driver family, focusing on integrated solutions for stepper and DC motors. Unlike discrete driver ICs, it combines power stages with digital control logic. The AUI variant specifically denotes the TSSOP-28 package option, distinguishing it from the TQFN32 version. This series targets applications where board space and component count are critical constraints.

Replacement Considerations

Check for direct cross-reference part numbers within the MAX22210 family, such as the TQFN32 packaged variant if package size differs. Verify electrical pinouts and thermal specifications before substituting with other dual H-bridge drivers from Analog Devices or competitors to ensure functional equivalence.