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Analog Devices Inc./Maxim Integrated MAX22203AUU+
- Part No.:
- MAX22203AUU+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX22203AUU+.pdf
- Description:
- DUAL H-BRIDGE FOR STEPPER AND BR
- Quantity:
- Payment:
- Shipping:
Inventory:1,651
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Product details
Overview
MAX22203AUU+ from Analog Devices is a dual 65V, 3.8A peak H-bridge motor driver IC with integrated current-sense and programmable current drive regulation (CDR), designed for brushed DC or single stepper motor control in industrial actuators and precision motion systems. It delivers typical total RON of 0.3Ω (HS + LS), supports independent PWM control per bridge, and features non-dissipative integrated current sensing (ICS) eliminating external shunt resistors.
For engineers reviewing the MAX22203AUU+ datasheet, MAX22203AUU+ pinout, MAX22203AUU+ application, or MAX22203AUU+ equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and current ratings, and real-world motor control use cases - all derived from the official Analog Devices MAX22203 datasheet Rev 1 (May 2024).
Technical Context
The MAX22203AUU+ implements two independent high-voltage H-bridges with charge-pump gate drivers enabling 65V operation. Each bridge uses internal current sensing (ICS) to feed a comparator against user-configurable ITRIP thresholds set via REFA/REFB resistors, triggering fixed-off-time decay modes (slow/mixed/fast) upon current limit violation.
It integrates a 1.8V LDO (VDD), open-drain FAULT reporting, active-low SLEEP mode (<20μA quiescent), and ROFF-programmable tOFF. Protection includes per-channel OCP (3.8A trip), UVLO (4.0V threshold), and thermal shutdown at +155°C with 20°C hysteresis - all tristating outputs during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Operating Voltage | 65V VM supply - enables direct drive of 48V industrial motors without external step-down. |
| Peak Output Current | 3.8A per bridge - supports short-duration capacitive load transients and motor startup surges. |
| RMS Current Rating | 2A RMS per bridge on JEDEC 4-layer board - defines continuous thermal limit under typical PCB layout. |
| Total RON (HS+LS) | 0.3Ω typical at 25°C - minimizes conduction loss and self-heating at full load. |
| Current Regulation Accuracy | ±5% for ITRIP = 1.75–3A - ensures repeatable torque limiting across temperature and unit variance. |
| Integrated Current Sensing | Non-dissipative ICS with KISEN = 7500 A/A - replaces 5W+ external shunts, saving PCB area and power. |
| Fixed Off-Time Range | 16–24μs (internal) or programmable via ROFF resistor - controls decay energy and current ripple. |
Pinout & Package
MAX22203AUU+ is packaged in a 38-pin TQFN (5mm × 7mm, exposed pad), RoHS-compliant, with θJA = 28°C/W on 4-layer board. Pin functions are validated per Analog Devices datasheet Rev 1 (pp.10–12).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1A / OUT2A OUT1B / OUT2B |
H-Bridge Outputs | Drive motor windings; each pair forms one full bridge - OUT1A/OUT2A for Bridge A, OUT1B/OUT2B for Bridge B. |
| ENA / ENB | Bridge Enable Inputs | Active-high logic enables respective bridge; low disables output (Hi-Z state) and halts PWM action. |
| DIN1A/DIN2A DIN1B/DIN2B |
PWM Control Inputs | CMOS-level inputs defining H-bridge state (forward/reverse/brake); support standard PWM speed control. |
| REFA / REFB | Current Threshold Set Inputs | Analog inputs setting ITRIP per bridge via external resistor to GND; range: 12kΩ–72kΩ → 0.5A–3A. |
| CDRA / CDRB | CDR Activity Indicators | Open-drain outputs asserted low when current regulation is active - enables real-time loop monitoring by MCU. |
| ISENA / ISENB | Current Monitor Outputs | Current-source outputs proportional to motor current (KISEN = 7500 A/A); require external RISEN to generate voltage for ADC sampling. |
| FAULT | Fault Reporting Output | Open-drain, active-low signal indicating OCP, UVLO, or TSD activation - requires external pull-up to host logic rail. |
| SLEEP | Power-Down Control | Active-low input placing device in ultra-low-power state (<20μA); outputs tristated, charge pump disabled. |
| VM | Main Power Input | High-voltage supply (4.5–65V); connects to motor power rail and bypassed with ≥1μF ceramic + 10μF electrolytic. |
| VDD | Internal 1.8V Regulator | Stable 1.8V analog supply for logic and sensing; bypassed with 2.2μF capacitor to AGND. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent H-bridges | Enables simultaneous control of two brushed DC motors or precise 2-phase stepper sequencing without external logic. |
| Programmable current regulation (CDR) | Per-bridge ITRIP setting (up to 3A) with ±5% accuracy eliminates need for external current-loop op-amps or DACs. |
| Non-dissipative integrated current sensing (ICS) | Removes bulky, lossy external shunt resistors - reduces BOM count, PCB area, and thermal design complexity. |
| Mixed/slow/fast decay mode selection | Configurable via DECAY1/DECAY2 pins - optimizes torque ripple, efficiency, and EMI for specific motor types and loads. |
| Thermal and fault protection | OCP (3.8A), UVLO (4.0V), TSD (+155°C) with automatic tristate recovery - ensures robust operation in unattended industrial environments. |
Applications
| Brushed DC Motor Control | Stepper Motor Drive |
|---|---|
|
Use Scenario: Precision linear actuator in automated valve positioning system requiring bidirectional motion and stall detection. IC Role / Device Role / Timing Role: Dual H-bridge driver executing direction and PWM speed commands while regulating phase current to prevent coil overheating. Use Value: Integrated CDR maintains consistent torque across battery voltage drop; ISEN outputs enable closed-loop current feedback without external sensors. |
Use Scenario: Compact 2-phase stepper motor in medical infusion pump demanding microstepping-capable current control and thermal safety. IC Role / Device Role / Timing Role: Single-chip stepper driver managing both phases with synchronized CDR, decay mode switching, and real-time fault reporting. Use Value: Eliminates discrete FETs, gate drivers, and current sense amps - reduces bill-of-materials and improves reliability in space-constrained enclosures. |
| Solenoid Actuation | Latched Valve Control |
|
Use Scenario: High-voltage solenoid in industrial fluid control panel requiring fast turn-on, controlled hold current, and overcurrent protection. IC Role / Device Role / Timing Role: H-bridge delivering 65V pulse for pull-in, then regulating hold current via CDR to minimize power dissipation. Use Value: Programmable ITRIP and tOFF allow precise energy delivery - prevents coil burnout while ensuring reliable mechanical engagement. |
Use Scenario: Latching bistable valve in HVAC system where power is only applied during state transitions, not holding. IC Role / Device Role / Timing Role: Bidirectional H-bridge generating polarity-reversed pulses to switch latching mechanism; FAULT pin confirms successful actuation. Use Value: SLEEP mode reduces standby current to <20μA; integrated OCP prevents damage during mechanical jam or coil short. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8876PWPR | Single 65V H-bridge (not dual); lower RON (0.22Ω typ), no integrated CDR - requires external current loop. | Requires two ICs for dual-motor control; lacks per-bridge ITRIP programming and CDR monitor outputs (CDRA/CDRB). | Choose if needing higher peak current (6.5A) per bridge and willing to add external regulation circuitry. |
| TB9051FTG | Automotive-grade dual 40V H-bridge; includes SPI interface and diagnostics; RON = 0.45Ω (HS+LS); ITRIP max = 2.5A. | Designed for ASIL-B compliance; larger TQFP package (7mm × 7mm); lacks ISEN analog monitor outputs. | Choose for automotive body control modules requiring functional safety certification and serial configurability. |
Compared with DRV8876PWPR and TB9051FTG, the MAX22203AUU+ uniquely combines dual 65V bridges, per-channel programmable CDR with monitor outputs, and non-dissipative current sensing in a compact TQFN - making it optimal for space-constrained industrial motion systems requiring analog current visibility and minimal external components.
Availability
MAX22203AUU+ is available at Aetrix Electronics and suitable for industrial motor control, precision actuation, and medical device motion subsystems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX22203AUU+ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX22203AUU+ belongs to Analog Devices' high-voltage motor driver product line, engineered specifically for compact, efficient, and intelligent motion control in industrial automation, robotics, and precision instrumentation.
FAQ
What is the maximum continuous current the MAX22203AUU+ can deliver per H-bridge?
The MAX22203AUU+ supports up to 2A RMS per H-bridge on a standard JEDEC 4-layer PCB. This value is thermally limited and depends on layout, copper area, and airflow. Peak current capability is 3.8A, but only for short transients - sustained operation above 2A RMS requires enhanced thermal management such as heatsinking or forced air cooling. The datasheet specifies 2A RMS as the recommended continuous rating under typical conditions.
How do I configure the current regulation threshold (ITRIP) for Bridge A using the MAX22203AUU+?
To configure ITRIP for Bridge A on the MAX22203AUU+, connect a resistor RREF between pin REFA and AGND. The relationship is ITRIP = 900mV / RREF, where RREF ranges from 12kΩ to 72kΩ - yielding ITRIP from 0.5A to 3A. For example, a 300kΩ resistor sets ITRIP ≈ 3A. The MAX22203AUU+ datasheet Table "Current Regulation" and Figure "Setting the Current Regulation Threshold" provide exact calculation guidance.
Does the MAX22203AUU+ support microstepping for stepper motor applications?
The MAX22203AUU+ does not implement microstepping internally - it is a dual full-bridge driver that executes discrete phase states (e.g., forward, reverse, brake). Microstepping must be implemented externally by the host controller via high-frequency PWM modulation of DIN1/DIN2 inputs and precise timing of decay mode selection. The MAX22203AUU+ supports this architecture through its fast CDR response, programmable tOFF, and real-time ISEN current feedback - enabling accurate current-controlled microstepping when paired with a capable MCU.
Can the MAX22203AUU+ operate from a 12V supply, and what protections activate at low voltage?
Yes, the MAX22203AUU+ operates from VM = 4.5V to 65V, so 12V is fully supported. At low input voltage, Undervoltage Lockout (UVLO) activates when VM falls below 3.75V (rising threshold) or 3.63V (falling threshold with 0.12V hysteresis). During UVLO, the MAX22203AUU+ tristates all outputs and disables internal circuits until VM rises above the threshold - preventing erratic behavior or partial gate drive during brown-out conditions.
What is the purpose of the CDRA and CDRB pins on the MAX22203AUU+?
CDRA and CDRB are open-drain outputs on the MAX22203AUU+ that go low whenever the internal Current Drive Regulation (CDR) loop actively limits current on Bridge A or B, respectively. They provide real-time visibility into CDR activity - allowing the host MCU to log regulation events, adjust PWM duty cycle dynamically, or trigger diagnostics. Each requires a pull-up resistor (1kΩ–5kΩ) to the controller's logic rail, and their assertion timing aligns precisely with tOFF decay initiation.
MAX22203AUU+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- -
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- Fan Motor Driver
- Current - Output:
- 3.8A
- Voltage - Supply:
- 4.5V ~ 65V
- Voltage - Load:
- 4.5V ~ 65V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-TSSOP-EP
MAX22203AUU+ FAQ
1.How can I place an order for MAX22203AUU+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22203AUU+ 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 MAX22203AUU+ reliable?
The price and inventory of MAX22203AUU+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22203AUU+ is usually 5 days.
3.What payment methods are accepted for MAX22203AUU+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22203AUU+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22203AUU+?
MAX22203AUU+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22203AUU+ 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 MAX22203AUU+?
For technical support, including MAX22203AUU+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22203AUU+ requirements.
6.How does Aetrix verify that MAX22203AUU+ is sourced from the original manufacturer or authorized distributors?
All MAX22203AUU+ 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 MAX22203AUU+ meets industry standards.
7.What is the process for return or replacement of MAX22203AUU+?
All MAX22203AUU+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22203AUU+, 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 MAX22203AUU+ part is unused and in its original packaging.
Return procedure for MAX22203AUU+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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