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Analog Devices Inc./Maxim Integrated MAX22202ATC+T
- Part No.:
- MAX22202ATC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX22202ATC+T.pdf
- Description:
- 36V BRUSHED DC MOTOR DRIVER WITH
- Quantity:
- Payment:
- Shipping:
Inventory:4,873
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Product details
Overview
MAX22202ATC+T from Analog Devices is a 36V, 3.5A peak full-bridge brushed DC motor driver in a 3mm × 3mm TDFN-EP package, featuring integrated non-dissipative current sensing (ICS), configurable current drive regulation (CDR), and active fault reporting via open-drain FAULT pin. It delivers 2A RMS continuous current on a JEDEC 4-layer board at +25°C ambient and supports ENBL/PHASE/MODE control for forward/reverse/brake/fast-decay operation in compact industrial actuators and portable power tools.
For engineers reviewing the MAX22202ATC+T datasheet, MAX22202ATC+T pinout, MAX22202ATC+T application, or MAX22202ATC+T equivalent, key selection considerations include its 0.3Ω total RDS(ON), programmable ILIM-based current limit (±5% accuracy at 0.8–2A), 1MHz current sense bandwidth, tOFF decay timing, and thermal shutdown at +165°C - all validated for space-constrained motor control with real-time torque feedback.
Technical Context
The MAX22202ATC+T implements an ENBL/PHASE/MODE logic interface with three-state bridge control, supporting slow-decay brake and synchronous fast-decay modes. Its internal CDR loop regulates peak output current by forcing fixed off-time decay when IOUT exceeds the ILIM-set threshold (ITRIP), independent of PWM duty cycle.
Current sensing occurs exclusively during energizing (forward/reverse) and slow-decay phases using low-side FET sense-FET architecture, delivering a scaled replica (KISEN = 5000 A/A) to the ISEN pin with ±3% accuracy over 0.8–2A. The FAULT pin asserts low on OCP (3.5–5A threshold), UVLO (2.67–3V), or TSD (+165°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VM = 3V to 36V - supports wide-input battery-powered and industrial bus systems without external regulators. |
| Peak Output Current | 3.5A - limited by overcurrent protection; sustains short transients like motor startup/stall without external current limiting. |
| RMS Output Current | 2A - thermally limited on JEDEC 4-layer PCB at +25°C ambient; actual max depends on heatsinking and airflow. |
| Total RDS(ON) | 0.3Ω (typ) - high-efficiency switching reduces conduction loss and self-heating in compact layouts. |
| Current Sense Accuracy | ±3% (0.8–2A) - enables precise closed-loop torque control using ISEN voltage feedback into MCU ADC. |
| Thermal Shutdown Threshold | +165°C - protects silicon integrity under sustained overload; hysteresis of +30°C prevents oscillation. |
| Undervoltage Lockout | 2.67V to 3.0V rising - prevents erratic operation during brownout or weak battery conditions. |
Pinout & Package
MAX22202ATC+T is housed in a thermally enhanced 12-pin TDFN-EP (3mm × 3mm, package code TD1233+1C) with exposed thermal pad (GNDP) for PCB heat dissipation. Pin 1 is ILIM; pin 12 is FAULT. All logic inputs tolerate 0–6V; OUT1/OUT2 swing rail-to-rail up to VM.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ILIM (Pin 1) | Configurable current limit reference | Connects external resistor (18–250kΩ) to set ITRIP per KILIM = 50kV; enables ±5% accurate stall current limiting. |
| ENBL (Pin 5) | Bridge enable control | Low disables H-bridge outputs to high-Z; used with PHASE/MODE to enter sleep mode after 2.2ms brake condition. |
| PHASE (Pin 4) | Direction control input | High = forward (OUT1=H, OUT2=L); low = reverse (OUT1=L, OUT2=H); requires ENBL=high to activate. |
| MODE (Pin 6) | Decay mode selector | High = slow-decay brake; low = fast-decay synchronous rectification; also triggers sleep mode when toggled after brake. |
| FAULT (Pin 12) | Open-drain fault indicator | Asserts low on OCP, UVLO, or TSD; requires external pullup; enables system-level fault logging without polling. |
| ISEN (Pin 8) | Current sense monitor output | Sources IISEN = IOUT / 5000; connects to GND via RISEN to generate ADC-compatible voltage (e.g., 1V at 2A with 2.5kΩ). |
| VM (Pin 11) | Main power supply input | Accepts 3–36V; requires local 1μF ceramic + 47μF bulk capacitor; powers gate drivers and charge pump. |
| GNDP (Pin 7) | Power ground / thermal pad | Must be soldered to large PCB copper pour for θJA = 41°C/W (4-layer board); critical for 2A RMS thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sensing (ICS) | Eliminates external shunt resistors - saves >15mm² PCB area and avoids 1–2W power loss in typical 2A applications. |
| Configurable current drive regulation (CDR) | Enables safe motor startup/stall handling by clamping peak current to user-defined ITRIP without firmware intervention. |
| ENBL/PHASE/MODE control interface | Supports both direction + decay mode selection in 3 pins - simplifies MCU GPIO usage vs. dual-PWM schemes. |
| Active fault reporting | Single FAULT pin signals OCP, UVLO, and TSD events - reduces system monitoring overhead and improves diagnostics. |
| TDFN-EP 3mm × 3mm package | Enables ultra-compact motor driver modules (< 100mm² total footprint) for handheld tools and robotic joints. |
Applications
| Power Tools | Medical Pumps |
|---|---|
|
Use Scenario: Cordless drill/driver with variable speed and electronic brake. IC Role / Device Role / Timing Role: Full-bridge driver controlling brushed DC motor direction, speed (via PWM on ENBL/PHASE), and braking (MODE = high). Use Value: Integrated CDR limits inrush current during bit engagement, extending battery life and preventing MOSFET thermal stress. |
Use Scenario: Portable infusion pump requiring precise flow rate and stall detection. IC Role / Device Role / Timing Role: Motor driver with real-time current feedback (ISEN → MCU ADC) for torque-based occlusion detection. Use Value: ±3% current sense accuracy enables reliable stall identification at < 0.5A, avoiding false alarms during normal operation. |
| Automotive HVAC Actuators | Industrial Valve Positioners |
|
Use Scenario: Dashboard air flap control using 12V brushed motor with position feedback. IC Role / Device Role / Timing Role: H-bridge driver with FAULT pin tied to vehicle diagnostic bus for OCP/TSD event logging. Use Value: -40°C to +125°C operating range and 8kV HBM ESD on OUT pins ensure robustness in automotive environments. |
Use Scenario: Pneumatic valve actuator with fail-safe current limiting during jammed conditions. IC Role / Device Role / Timing Role: Driver enforcing 2A RMS limit via ILIM resistor while reporting fault status to PLC via FAULT line. Use Value: Thermal shutdown at +165°C prevents coil damage during extended stall, meeting IEC 61800-5-1 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushed motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB9051FTG | 40V, 3.5A peak; SPI interface; no integrated current sense; requires external shunt and amplifier. | Lacks ISEN output and CDR - needs MCU firmware for current limiting and torque feedback. | Choose when SPI configurability and higher voltage margin outweigh need for analog current monitoring. |
| VNH7040AS | 41V, 5.6A peak; includes current sense amplifier output (VCS); no programmable CDR; larger HTSSOP-20 package. | Provides amplified analog current output but no closed-loop regulation - relies on external control loop. | Prefer when higher peak current and built-in CSA simplify signal chain, accepting larger footprint and no auto-decay. |
Compared with TB9051FTG and VNH7040AS, MAX22202ATC+T uniquely integrates lossless current sensing *and* hardware-enforced current regulation in a 3mm × 3mm package - enabling compact, self-protecting motor control without external components or firmware-based current limiting.
Availability
MAX22202ATC+T is available at Aetrix Electronics and suitable for power tools, medical pumps, automotive HVAC actuators, and industrial valve positioners requiring stable component supply across long production lifecycles.
Supply support for MAX22202ATC+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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX2220x family was designed specifically for space-constrained brushed DC motor applications demanding integrated protection, accurate current feedback, and minimal external components - targeting portable equipment and smart actuators.
FAQ
What is the maximum continuous RMS current supported by MAX22202ATC+T?
The MAX22202ATC+T supports 2A RMS continuous current when mounted on a standard JEDEC 4-layer PCB at +25°C ambient temperature. Real-world capability depends on thermal design: increasing copper area, adding thermal vias under GNDP, or improving airflow can raise this value. At elevated ambient temperatures or with reduced PCB copper, derating is required per θJA = 41°C/W.
How does the current drive regulation (CDR) function in MAX22202ATC+T?
In MAX22202ATC+T, CDR activates when motor current exceeds the ILIM-set ITRIP threshold. The device forces slow-decay mode for a fixed tOFF period (20μs typ), limiting peak current without MCU involvement. This protects against startup surges and stall conditions while reducing supply bypassing demands - a hardware-level safety feature distinct from software-based current limiting.
Can MAX22202ATC+T be used without PWM control?
Yes. MAX22202ATC+T supports direct logic-level control: set PHASE and ENBL to define direction and enable state, then use MODE to select brake or fast-decay. With CDR enabled via ILIM, it can deliver regulated torque without PWM - ideal for simple on/off actuators where speed isn't controlled, only stall-safe motion is required.
What is the purpose of the ISEN pin on MAX22202ATC+T?
The ISEN pin on MAX22202ATC+T outputs a current replica (IISEN = IOUT / 5000) of the motor phase current during energizing and slow-decay phases. Connecting a resistor (e.g., 2.5kΩ) from ISEN to GND generates a proportional voltage for MCU ADC sampling - enabling real-time torque monitoring, stall detection, and closed-loop current control without external sense resistors.
Does MAX22202ATC+T include thermal protection?
Yes. MAX22202ATC+T features thermal shutdown (TSD) that disables the H-bridge and asserts the FAULT pin when junction temperature reaches +165°C. It includes +30°C hysteresis to prevent cycling. This protection operates independently of control logic and remains active even if the device is in sleep mode, safeguarding against sustained overload or poor heatsinking.
MAX22202ATC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN 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:
- On/Off
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- DC Motors, General Purpose, Stepper Motors
- Current - Output:
- 3.5A
- Voltage - Supply:
- 3V ~ 36V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-TDFN-EP (3x3)
MAX22202ATC+T FAQ
1.How can I place an order for MAX22202ATC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22202ATC+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 MAX22202ATC+T reliable?
The price and inventory of MAX22202ATC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22202ATC+T is usually 5 days.
3.What payment methods are accepted for MAX22202ATC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22202ATC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22202ATC+T?
MAX22202ATC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22202ATC+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 MAX22202ATC+T?
For technical support, including MAX22202ATC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22202ATC+T requirements.
6.How does Aetrix verify that MAX22202ATC+T is sourced from the original manufacturer or authorized distributors?
All MAX22202ATC+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 MAX22202ATC+T meets industry standards.
7.What is the process for return or replacement of MAX22202ATC+T?
All MAX22202ATC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22202ATC+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 MAX22202ATC+T part is unused and in its original packaging.
Return procedure for MAX22202ATC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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