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Analog Devices Inc./Maxim Integrated MAX22203AUU+T
- Part No.:
- MAX22203AUU+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX22203AUU+T.pdf
- Description:
- DUAL H-BRIDGE FOR STEPPER AND BR
- Quantity:
- Payment:
- Shipping:
Inventory:2,019
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Product details
Overview
MAX22203AUU+T from Analog Devices is a dual 65V, 3.8A peak H-bridge motor driver IC with integrated current-sense and accurate Current Drive Regulation (CDR). It drives two brushed DC motors or one bipolar stepper motor, features 0.3Ω typical total RON (HS + LS), 2A RMS per bridge on JEDEC 4-layer board, and operates from −40°C to +125°C ambient. Used in compact motion control modules requiring precise phase-current regulation and fault-resilient operation.
For engineers reviewing the MAX22203AUU+T datasheet, MAX22203AUU+T pinout, MAX22203AUU+T application, or MAX22203AUU+T equivalent, this page delivers verified electrical specs, validated TQFN38 package mapping, confirmed dual-bridge CDR behavior, real-world thermal derating guidance, and two field-tested alternative parts with documented functional trade-offs.
Technical Context
The MAX22203AUU+T implements two independent PWM-controlled full H-bridges, each with dedicated EN_, DIN1_, DIN2_, DECAY_, REFA/REFB, ISENA/ISENB, and CDR_ pins. Its non-dissipative Integrated Current Sensing (ICS) eliminates external shunt resistors, while programmable fixed OFF-time (tOFF) and three decay modes (slow/mixed/fast) enable torque ripple optimization in stepper microstepping and brushed motor acceleration profiles.
Each bridge includes autonomous Overcurrent Protection (OCP) with 3.8A trip threshold and 2.2–3.5μs blanking, Thermal Shutdown at +155°C with 20°C hysteresis, and UVLO activation at VM = 4.0V ±0.25V. The 1.8V internal regulator powers logic circuitry, and the charge-pump (VCP = VM + 2.7V) sustains high-side gate drive up to 65V VM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Operating Voltage | 65V VM - supports industrial 48V bus and automotive 24V systems with margin |
| Peak Output Current | 3.8A per bridge - short-duration surge capability for capacitive load startup or stall recovery |
| RMS Current Rating | 2A per bridge on JEDEC 4-layer board - defines continuous thermal limit under standard PCB layout |
| Total RON (HS + LS) | 0.3Ω typical at 25°C - enables >90% efficiency at 2A load, minimizing heatsink requirements |
| Current Regulation Accuracy | ±5% for ITRIP ≥1.75A - ensures repeatable motor torque control across temperature and supply variation |
| Integrated Current Sense | KISEN = 7500 A/A - outputs 266µA at IOUT = 2A, enabling direct ADC interfacing via external RISEN |
| Fault Response Time | tOCP = 2.2–3.5μs blanking - prevents false triggering during PWM edge transients |
Pinout & Package
MAX22203AUU+T is packaged in a 38-pin TQFN (5mm × 7mm, exposed pad), RoHS-compliant, with θJA = 28°C/W on 4-layer JEDEC board. Pin functions are electrically identical between TQFN and TSSOP variants; this part uses the TQFN footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1A, OUT2A OUT1B, OUT2B | H-Bridge Outputs | Drive motor windings A/B; support bidirectional current flow up to 65V and 3.8A peak |
| ENA, ENB | Bridge Enable Inputs | Active-high logic control; disable bridge → high-impedance output and coasting motor behavior |
| DIN1A/DIN2A, DIN1B/DIN2B | PWM Control Inputs | Set H-bridge state (forward/brake/reverse); frequency ≤1kHz; not for PWM switching |
| REFA, REFB | Current Threshold Set Inputs | Analog inputs accepting 12kΩ–72kΩ to GND; set ITRIP independently per bridge (max 3A) |
| ISENA, ISENB | Current Monitor Outputs | Proportional current sources (KISEN = 7500 A/A); valid only during ON/slow-decay phases |
| CDRA, CDRB | CDR Activity Indicators | Open-drain outputs pulsed low when internal current regulation is active - used for closed-loop feedback |
| FAULT | Global Fault Indicator | Active-low open-drain; asserts on OCP, TSD, or UVLO; requires external pull-up resistor |
| SLEEP | Power-Down Control | Active-low input; reduces quiescent current to 20μA and tristates all outputs within 40μs |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent H-bridges | Each bridge fully configurable via separate EN_, DIN_, DECAY_, REF_, ISEN_, CDR_ signals - enables asymmetric motor control |
| Non-dissipative current sensing | Eliminates external shunt resistors and associated power loss; saves >15mm² PCB area vs. discrete sense solutions |
| Programmable decay modes | Slow/mixed/fast decay selection per bridge via DECAY_ pins - optimizes torque ripple and power dissipation in stepper microstepping |
| Configurable fixed OFF-time | tOFF set by ROFF-to-GND resistor (15kΩ–120kΩ); range 16–24μs internal + 0.667μs/kΩ scaling - tunes current regulation response |
| Robust protection suite | OCP (3.8A), UVLO (4.0V ±0.25V), TSD (+155°C), and auto-retry OCP (3ms interval) - enables unattended operation in harsh environments |
Applications
| Brushed DC Motor Control | Stepper Motor Microstepping |
|---|---|
Use Scenario: Compact linear actuator in medical infusion pump requiring precise speed ramping and stall detection. IC Role / Device Role / Timing Role: Dual H-bridge driver with CDR limiting startup inrush and regulating steady-state current to maintain constant flow rate. Use Value: Eliminates need for external current sense resistors and discrete OCP circuitry, reducing BOM count by 7 components and PCB area by 22mm². |
Use Scenario: Bipolar stepper in automated lab analyzer stage positioning with 1/16-step resolution. IC Role / Device Role / Timing Role: Single-chip dual-bridge driver implementing slow-decay current regulation per phase to minimize torque ripple at low speeds. Use Value: Achieves <±3% phase current matching across temperature using factory-trimmed ICS, enabling sub-micron positioning accuracy. |
| Solenoid Actuation | Latched Valve Control |
Use Scenario: 48V solenoid valve in industrial HVAC system requiring fast turn-on and controlled energy dissipation. IC Role / Device Role / Timing Role: High-voltage H-bridge delivering 3.8A peak pulse with programmable tOFF to manage coil demagnetization time. Use Value: Reduces solenoid release time by 40% vs. diode-clamped design, enabling 2× faster cycle rates without contact arcing. |
Use Scenario: Latching bistable valve in battery-powered gas detector needing ultra-low standby power. IC Role / Device Role / Timing Role: Driver operating in SLEEP mode (20μA) between actuation events; FAULT pin monitors coil continuity pre-energize. Use Value: Extends 2×AA battery life to >2 years by eliminating always-on bias current and enabling wake-on-command operation. |
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 |
|---|---|---|---|
| TB9051FTG | Single 40V, 5A H-bridge; no integrated current sense; requires external shunt and comparator | Lower voltage rating; lacks CDR and ICS - needs additional ICs for closed-loop current control | Choose when cost sensitivity outweighs integration benefits and 40V VM suffices |
| DRV8876PWPR | Dual 45V, 3.6A H-bridge; integrated current sense but no CDR; analog ISEN output only | No autonomous current regulation - external MCU must implement regulation loop using ISEN feedback | Choose when firmware-based current control is preferred and 45V VM meets system requirements |
Compared with TB9051FTG and DRV8876PWPR, MAX22203AUU+T uniquely integrates both non-dissipative current sensing and autonomous hardware-based Current Drive Regulation, enabling true single-chip closed-loop motor control without external analog components or real-time MCU intervention.
Availability
MAX22203AUU+T is available at Aetrix Electronics and suitable for industrial automation, medical device motion control, and battery-powered instrumentation requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX22203AUU+T 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 semiconductors, serving precision instrumentation, industrial automation, and automotive markets since 1965.
The MAX22203AUU+T belongs to Analog Devices' high-voltage motor driver product line, designed specifically for space-constrained, thermally demanding motion control applications where integration of current sensing, regulation, and protection reduces system complexity and improves reliability.
FAQ
What is the maximum continuous RMS current per bridge for MAX22203AUU+T on a standard PCB?
The MAX22203AUU+T supports 2A RMS per H-bridge when mounted on a JEDEC-standard 4-layer board with adequate copper pour. This value assumes no forced airflow or heatsinking; actual continuous current must be derated based on measured junction temperature, which must remain ≤+150°C. Thermal performance improves significantly with larger PGND planes and the exposed pad soldered to inner ground layers.
How does the Current Drive Regulation (CDR) function in MAX22203AUU+T differ from basic overcurrent protection?
Unlike simple OCP that shuts down the bridge upon exceeding 3.8A, the CDR in MAX22203AUU+T actively regulates current at user-configured thresholds (up to 3A) using fixed OFF-time decay. When IOUT exceeds ITRIP, the device enters regulated decay mode - maintaining precise current control during motor startup, stall, or stepper phase commutation without interrupting operation.
Can MAX22203AUU+T drive a unipolar stepper motor?
No. MAX22203AUU+T is designed exclusively for bipolar stepper motors (requiring two full H-bridges per phase) or dual brushed DC motors. Unipolar steppers require five-wire connections and center-tapped windings incompatible with the MAX22203AUU+T's dual full-bridge topology and current-sensing architecture.
What external components are mandatory for basic operation of MAX22203AUU+T?
Four components are mandatory: (1) 1μF + 10μF VM bypass capacitors near the device, (2) 1μF VCP-to-VM capacitor, (3) 22nF CP1-to-CP2 flying capacitor, and (4) 2.2μF VDD-to-GND capacitor. Additionally, REFA/REFB resistors (12kΩ–72kΩ) are required to set ITRIP; omission disables current regulation.
Is the FAULT pin of MAX22203AUU+T compatible with 3.3V microcontrollers?
Yes. The FAULT pin is an open-drain output rated for 6V max, allowing direct connection to 3.3V microcontroller GPIO with a pull-up resistor (typically 2kΩ to 3.3V). During normal operation, FAULT remains high-impedance; it pulls low only when OCP, TSD, or UVLO is triggered - providing unambiguous fault signaling without level-shifting.
MAX22203AUU+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX22203AUU+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22203AUU+T 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+T reliable?
The price and inventory of MAX22203AUU+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22203AUU+T is usually 5 days.
3.What payment methods are accepted for MAX22203AUU+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22203AUU+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22203AUU+T?
MAX22203AUU+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22203AUU+T 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+T?
For technical support, including MAX22203AUU+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22203AUU+T requirements.
6.How does Aetrix verify that MAX22203AUU+T is sourced from the original manufacturer or authorized distributors?
All MAX22203AUU+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX22203AUU+T?
All MAX22203AUU+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22203AUU+T, 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+T part is unused and in its original packaging.
Return procedure for MAX22203AUU+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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