MAX22203ATU+T

Overview

The MAX22203ATU+T is a dual H-bridge motor driver manufactured by Analog Devices Inc./Maxim Integrated. It supports dual brushed DC motors or a single stepper motor with a supply voltage range of 4.5V to 65V. The device features integrated current sensing and PWM input control. Each H-bridge delivers up to 3.8A peak current with an RMS rating of 2A on standard JEDEC 4-layer boards. The typical total on-resistance per bridge is 0.3Ω at 25°C. It operates within a temperature range of -40°C to +125°C and is housed in a 38-TQFN (5x7mm) package.

Feature Summary

• Integrated non-dissipative current sensing eliminates the need for external power resistors, improving efficiency and saving board space.
• Supports multiple decay modes including slow, mixed, and fast decay to optimize motor performance under varying load conditions.
• Dual H-bridge architecture allows independent control of two brushed DC motors or a single stepper motor.

Applications

• Brushed DC motor control
• Stepper motor drive systems
• Industrial automation actuators

Procurement Notes

Verify the specific suffix 'TU+' against the manufacturer's official datasheet to confirm pinout compatibility and RoHS status. Ensure the thermal design accounts for the 38-TQFN package limitations when operating near the maximum RMS current ratings. Confirm that the PCB layout supports the required heat dissipation for the intended application environment.

Selection Notes

Select this component when a dual-channel solution is required for driving either two separate brushed DC motors or a single bipolar stepper motor. The integrated current sensing and adjustable trip levels simplify the design compared to discrete solutions. Consider the 65V maximum supply voltage capability for applications requiring higher voltage operation than standard 12V or 24V systems.

Part Context

This part belongs to the MAX22203 family of high-performance motor drivers from Maxim Integrated, now part of Analog Devices. The series focuses on providing integrated control and power stages for efficient motor management. The TQFN packaging is designed for surface-mount assembly, suitable for compact industrial and consumer electronic designs requiring robust motor control capabilities.

Replacement Considerations

Check the official Analog Devices replacement matrix for verified cross-references. Ensure any substitute maintains the same 38-TQFN footprint and electrical characteristics, specifically the 65V rating and 3.8A peak current capability, to guarantee mechanical and functional interchangeability.