MAX22210AUI+T

Overview

The MAX22210AUI+T is a dual brushed DC motor and single stepper motor driver featuring two 36V, 3.8A half-bridges in a TSSOP-28 package. It operates between 4.5V and 36V with a typical total RDS(ON) of 0.25Ω. The device integrates a 128-step microstepping indexer controlled via STEP/DIR interface, non-dissipative current sensing, and adaptive decay modes. It supports overcurrent protection (OCP), thermal shutdown (TSD), and under-voltage lockout (UVLO).

Feature Summary

• Integrates a 128-step microstepping indexer with STEP/DIR control for smooth operation.
• Features non-dissipative integrated current sensing to eliminate external power resistors.
• Supports slow, mixed, and adaptive decay modes for precise current regulation.
• Includes comprehensive fault protection with open-drain FAULT pin indication.

Applications

• Two-phase stepper motor control systems
• Dual brushed DC motor drives
• Industrial automation actuators

Procurement Notes

Verify the specific suffix 'AUI+T' against the manufacturer's official datasheet to confirm the TSSOP-28 package and reel packaging configuration. Ensure compatibility with the required operating temperature range of -40°C to +125°C for your specific application environment before finalizing procurement.

Selection Notes

Select this component when high-efficiency driving of small inductive loads is required due to its low 0.25Ω RDS(ON). It is suitable for applications needing precise microstepping resolution without external logic controllers. Consider the thermal limitations of the TSSOP-28 package if continuous RMS currents approach the 2A limit per bridge.

Part Context

This part belongs to the MAX22210 series from Analog Devices / Maxim Integrated. It is categorized under Motor / Motion / Ignition Controllers & Drivers within the PMIC - Power Management ICs subcategory. The device is designed for compact motor control solutions requiring integrated intelligence and protection features.

Replacement Considerations

Consult the official datasheet for direct pin-to-pin compatible alternatives within the same family. Verify that any substitute maintains the 36V rating and 3.8A peak current capability while supporting the required TSSOP-28 footprint.

FAQ

How does the MAX22210 handle current limiting?

It uses non-dissipative integrated current sensing to compare phase current against a threshold. If exceeded, it forces a fixed off-time countdown for current decay.

What microstepping resolutions are supported?

The device includes a built-in 128-step microstepping indexer controlled by the STEP/DIR interface.