MAX22211AUI+T

Overview

The MAX22211AUI+T is a dual H-bridge motor driver designed for driving dual brushed DC motors or a single stepper motor. It operates with a supply voltage range of 4.5 V to 36 V and delivers a continuous output current of 3.8 A per bridge. The device integrates high-side and low-side N-channel power MOSFETs, an integrated current sense amplifier, and thermal shutdown protection. It features a serial interface for configuration and control, supporting PWM frequencies up to 5 MHz. The component is housed in a 28-pin TSSOP package with exposed pad for enhanced thermal performance.

Feature Summary

• Dual H-bridge architecture capable of driving two brushed DC motors or one bipolar stepper motor
• Integrated current sense amplifier for precise overcurrent protection and monitoring
• Serial interface control for simplified system integration and reduced pin count
• Built-in thermal shutdown and undervoltage lockout for robust operation

Applications

• Dual brushed DC motor control in industrial automation systems
• Single stepper motor drive applications in robotics and motion control
• Automotive body electronics requiring reliable motor actuation
• Consumer appliances utilizing multiple motor drives

Procurement Notes

Verify the specific suffix 'AUI+T' to confirm the tape and reel packaging quantity and temperature grade. Ensure compatibility with the host controller's serial protocol levels. Confirm that the 36V maximum supply rating aligns with the system power rail specifications. Check for any recent lifecycle notices regarding obsolescence or last-time buy status from Analog Devices.

Selection Notes

Select this component when a dual independent motor drive or a single stepper solution is required within a 36V, 3.8A envelope. The integrated current sense reduces external component count compared to discrete solutions. Consider the TSSOP-28 package constraints for PCB layout and thermal dissipation requirements. Evaluate if the serial interface speed meets the real-time control latency needs of the application.

Part Context

This part belongs to the MAX2221x family of motor drivers from Maxim Integrated, now part of Analog Devices. It serves as a higher-voltage alternative to lower-voltage counterparts like the MAX22203. The series focuses on providing integrated protection and sensing to simplify motor driver design for automotive and industrial markets.

Replacement Considerations

The MAX22210AUI+T is a related single-stepper variant within the same family. Verify pin-to-pin compatibility and functional equivalence before substitution. Cross-reference with Texas Instruments DRV8886 or DRV8885 for alternative sourcing, noting differences in current ratings and interface protocols.