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Analog Devices Inc./Maxim Integrated MAX22210AUI+
- Part No.:
- MAX22210AUI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX22210AUI+.pdf
- Description:
- 36V , 3.8A DUAL BRUSHED/SINGLE S
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
MAX22210AUI+ from Analog Devices is a dual-channel, 36V, 3.8A peak per H-bridge stepper motor driver with integrated 128-microstep indexer, nondissipative current sensing (ICS), and STEP/DIR interface - designed for precision motion control in compact industrial and medical positioning systems.
For engineers reviewing the MAX22210AUI+ datasheet, MAX22210AUI+ pinout, MAX22210AUI+ application, or MAX22210AUI+ equivalent, this page delivers verified electrical specs, thermal derating guidance, decay-mode configuration logic, ISEN current-monitor scaling, and package-specific layout constraints for reliable stepper system integration.
Technical Context
The MAX22210AUI+ implements two independent 36V-rated H-bridges with total RON = 0.25Ω (HS + LS) at +25°C, supporting impulsive IMAX = 3.8A per bridge while limiting RMS current to 2A on a 4-layer PCB. Its embedded 128-step indexer uses a DAC and lookup table to generate microstepping waveforms synchronized to external STEP/DIR signals.
Current regulation relies on nondissipative ICS monitoring low-side FET conduction, comparing sensed current against an ITRIP threshold set via REF resistor and HFS logic input. Decay mode (slow/mixed/adaptive) and fixed OFF time (tOFF) are programmable via MODE_/DECAY_ pins and ROFF resistor, enabling precise torque/noise trade-off tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VM = +4.5V to +36V - supports wide-input industrial power rails without external DC-DC pre-regulation |
| Peak Output Current | 3.8A per H-bridge - limited by OCP; enables driving NEMA 17–23 motors with high holding torque |
| Total RON | 0.25Ω (HS + LS, typ @ +25°C) - minimizes conduction loss and thermal rise at full load |
| Microstep Resolution | 128 steps per full step - reduces vibration and audible noise in precision positioning applications |
| Current Sense Accuracy | ±5% over 0.7–3A range (HFS = low) - enables closed-loop current feedback without external shunts |
| Thermal Shutdown Threshold | TJ = +165°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design |
| Package | TQFN32 (5mm × 5mm) - exposes thermal pad (EP) as PGND for direct PCB heatsinking |
Pinout & Package
MAX22210AUI+ is housed in a 32-pin TQFN package (5mm × 5mm, exposed thermal pad). The EP pad must be soldered to a solid ground plane for thermal and electrical integrity. Pin functions are validated per Analog Devices' official TQFN pinout diagram (Outline 21-0140).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1A, OUT1B, OUT2A, OUT2B | H-Bridge Outputs | Drive phase A and B windings of bipolar stepper motor; each pair forms one full bridge |
| ISENA, ISENB | Current Mirror Outputs | Provide proportional analog current (7.5mA/A or 3.84mA/A depending on HFS) for external monitoring/diagnostics |
| REF | Full-Scale Current Setpoint | Connects to GND via resistor (12–60kΩ) to program IFS = 3A max; sets ITRIP reference for PWM regulation |
| ROFF | PWM OFF-Time Control | Resistor-to-GND sets tOFF = 16–24μs + KTOFF × RROFF; determines decay duration per cycle |
| FAULT | Open-Drain Fault Indicator | Active-low signal asserts on OCP, UVLO, or TSD; requires external pull-up to host controller supply |
| HFS | Half Full-Scale Enable | Logic-high halves IFS and doubles low-side RON, improving current accuracy below 1.5A |
| STEP/DIR | Indexer Command Interface | Rising-edge-triggered STEP advances microstep position; DIR sets winding polarity sequence |
| SLEEP/EN | Power-State Control | SLEEP = low disables charge pump and places outputs in high-Z; EN = low three-states bridges only |
Key Features
| Feature | Design Value |
|---|---|
| Nondissipative Integrated Current Sensing (ICS) | Eliminates external sense resistors - saves >15mm² PCB area and up to 1.2W dissipation per bridge at 2A RMS |
| 128-Microstep Indexer with STEP/DIR Interface | Reduces mechanical resonance and acoustic noise vs. 16-step drivers; no external controller firmware required |
| Configurable Decay Modes (Slow/Mixed/Adaptive) | Adaptive mode dynamically adjusts decay based on current slope - optimizes torque smoothness across speed range |
| Programmable Full-Scale Current (IFS = 3A max) | Set via single REF resistor; HFS pin enables 1.5A full-scale mode with ±5% accuracy down to 0.35A |
| Integrated Charge Pump (VCP) | Generates gate drive voltage above VM - ensures full enhancement of high-side MOSFETs up to 36V supply |
| Comprehensive Protection Suite | OCP per FET, UVLO on VM/VDD, thermal shutdown at +165°C, and open-drain FAULT reporting - enables robust field operation |
Applications
| Industrial CNC Positioning | Medical Infusion Pumps |
|---|---|
|
Use Scenario: High-precision linear actuation in desktop CNC mills and 3D printer extruders requiring sub-10μm repeatability. IC Role / Device Role / Timing Role: Dual H-bridge driver executing microstepped commutation under STEP/DIR commands from motion controller MCU. Use Value: 128-step resolution and adaptive decay minimize positional jitter and audible whine during low-speed traversal. |
Use Scenario: Silent, accurate fluid dosing in portable infusion pumps where motor noise and EMI must be minimized. IC Role / Device Role / Timing Role: Stepper driver with integrated current regulation and ISEN feedback for real-time stall detection and flow calibration. Use Value: Nondissipative ICS eliminates heat-generating shunt resistors - critical for battery-powered, thermally constrained enclosures. |
| Automated Laboratory Equipment | ATM Cash Dispensers |
|
Use Scenario: Robotic sample handling in DNA sequencers and ELISA washers requiring repeatable, low-vibration axis movement. IC Role / Device Role / Timing Role: Motion controller peripheral managing bidirectional stepper sequencing with fault-safe shutdown on overcurrent or thermal events. Use Value: FAULT pin assertion and thermal hysteresis (+20°C) prevent spurious shutdowns during transient load spikes. |
Use Scenario: Reliable cash transport mechanism in ATMs where motor stalling must trigger immediate diagnostic response. IC Role / Device Role / Timing Role: Stepper driver with mirrored ISENA/ISENB outputs feeding host MCU ADC for continuous current profiling. Use Value: ±5% current sense accuracy enables software-based stall detection without additional sensors or hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMC2209-LA | Integrated UART interface, stealthChop2 quiet stepping, lower max voltage (29V), no ISEN output | Better suited for consumer-grade 3D printers with host MCU UART control; lacks analog current monitor for diagnostics | Select when silent operation and firmware configurability outweigh need for analog current telemetry |
| DRV8825PWPR | 2.2A peak, 1/32 microstepping, external sense resistors required, no integrated indexer | Requires external step generator logic; higher board area and power loss due to shunt resistors | Select for cost-sensitive designs where microcontroller handles indexing and thermal budget allows shunt dissipation |
Compared with TMC2209-LA and DRV8825PWPR, MAX22210AUI+ uniquely combines 3.8A drive capability, 128-step indexing, and analog ISEN outputs in a thermally optimized TQFN - making it optimal for industrial systems demanding both performance and diagnostic visibility.
Availability
MAX22210AUI+ is available at Aetrix Electronics and suitable for industrial CNC positioning, medical infusion pumps, automated laboratory equipment, and ATM cash dispensers requiring stable component supply and long-term production continuity.
Supply support for MAX22210AUI+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX22210 belongs to Analog Devices' precision motion control portfolio, engineered specifically for compact, high-efficiency stepper systems needing integrated current sensing, microstepping, and robust protection - without external components.
FAQ
What is the maximum continuous RMS current per H-bridge for MAX22210AUI+ on a standard PCB?
The MAX22210AUI+ supports 2A RMS per H-bridge at +25°C ambient on a 4-layer PCB with adequate ground plane. This value decreases with rising ambient temperature or reduced copper area - actual thermal limit depends on layout, airflow, and heatsinking. Derating curves in the datasheet must be applied for designs exceeding 60°C junction temperature.
How does the HFS pin affect current regulation accuracy in MAX22210AUI+?
When HFS = high, MAX22210AUI+ halves its full-scale current range (to 1.5A) and doubles low-side RON, improving current regulation accuracy to ±5% down to 0.35A. This mode is essential for applications requiring precise low-current control, such as microfluidic valve actuation or low-torque optical positioning stages.
Can MAX22210AUI+ operate without external sense resistors?
Yes - MAX22210AUI+ uses nondissipative integrated current sensing (ICS) that monitors low-side FET conduction directly. No external shunt resistors are needed, eliminating associated power loss, board space, and thermal management overhead. ISEN outputs provide mirrored analog current for external monitoring.
What decay modes does MAX22210AUI+ support, and how are they selected?
MAX22210AUI+ supports slow, mixed, and adaptive decay modes. Selection is controlled by DECAY1/DECAY2 logic inputs per the truth table in the datasheet. Adaptive decay automatically switches between slow and fast decay based on current slope - optimizing torque linearity and reducing motor heating during acceleration/deceleration.
Is the MAX22210AUI+ pin-compatible with other packages of the same part number?
No - MAX22210AUI+ refers specifically to the TQFN32 (5mm × 5mm) variant. The TSSOP28 version (e.g., MAX22210AUT+) has different pin count, layout, and thermal characteristics. PCB layout, decoupling, and thermal pad connection must be redesigned when switching packages; no mechanical or electrical interchangeability exists.
MAX22210AUI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- Step/Direction
- Technology:
- NMOS
- Step Resolution:
- 1 ~ 1/128
- Applications:
- General Purpose
- Current - Output:
- 3.8A
- Voltage - Supply:
- 4.5V ~ 36V
- Voltage - Load:
- 4.5V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP-EP
MAX22210AUI+ FAQ
1.How can I place an order for MAX22210AUI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22210AUI+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX22210AUI+ reliable?
The price and inventory of MAX22210AUI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22210AUI+ is usually 5 days.
3.What payment methods are accepted for MAX22210AUI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22210AUI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22210AUI+?
MAX22210AUI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22210AUI+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX22210AUI+?
For technical support, including MAX22210AUI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22210AUI+ requirements.
6.How does Aetrix verify that MAX22210AUI+ is sourced from the original manufacturer or authorized distributors?
All MAX22210AUI+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX22210AUI+ meets industry standards.
7.What is the process for return or replacement of MAX22210AUI+?
All MAX22210AUI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22210AUI+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX22210AUI+ part is unused and in its original packaging.
Return procedure for MAX22210AUI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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