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Analog Devices Inc./Maxim Integrated MAX22207ATC+
- Part No.:
- MAX22207ATC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX22207ATC+.pdf
- Description:
- 36V DC MOTOR DRIVER CURRENT SENS
- Quantity:
- Payment:
- Shipping:
Inventory:710
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Product details
Overview
MAX22207ATC+ from Analog Devices is a 36V, 3.5A peak full-bridge brushed DC motor driver with integrated non-dissipative current sensing (ICS), current drive regulation (CDR), and open-drain CDR monitor output (CDROUT). It delivers 2A RMS continuous current on a JEDEC 4-layer board at +25°C ambient, features 0.3Ω typical total RDS(ON), and operates across –40°C to +125°C for industrial motor control in compact space-constrained systems.
For engineers reviewing the MAX22207ATC+ datasheet, MAX22207ATC+ pinout, MAX22207ATC+ application, or MAX22207ATC+ equivalent, key selection criteria include its dedicated CDROUT fault-monitoring capability, ILIM-programmable 3.5A peak current limit, ISEN analog current replica output, TDFN12 3mm × 3mm package footprint, and support for PWM-based speed/torque control with stall-safe CDR operation.
Technical Context
The MAX22207ATC+ implements a single-channel H-bridge using low-RDS(ON) N-channel MOSFETs (0.15Ω HS + 0.15Ω LS typ), driven by an integrated charge pump and level-shifted gate drivers. Its embedded current drive regulation (CDR) activates when motor current exceeds the ILIM-set ITRIP threshold, forcing fixed 20μs slow-decay off-time (tOFF) independent of external PWM timing.
Current sensing occurs exclusively during energizing (forward/reverse) and brake (slow-decay) phases via sense-FET architecture - delivering a proportional 1/5000-scaled current output on ISEN - while CDROUT provides an open-drain active-low signal asserting only when CDR is actively regulating, enabling real-time loop supervision without ADC polling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VM = 3V to 36V - supports wide-input industrial and battery-powered 12V/24V systems without external regulators. |
| Peak Output Current | 3.5A - limited by overcurrent protection (OCP); sustains short transients such as motor startup or stall. |
| RMS Output Current | 2A - thermally limited on JEDEC 4-layer PCB at +25°C ambient; actual max depends on layout thermal design. |
| Total RDS(ON) | 0.3Ω (HS + LS typ at +25°C) - enables high-efficiency operation with <1.5W conduction loss at 2A. |
| Current Sense Accuracy | ±3% (IOUT = 0.8–2A) - ensures reliable torque feedback for closed-loop control without external shunt calibration. |
| CDROUT Function | Dedicated open-drain monitor - asserts low only during active CDR regulation, enabling precise fault-state isolation. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood, factory automation, and harsh-environment motor control. |
Pinout & Package
MAX22207ATC+ is housed in a thermally enhanced TDFN12 3mm × 3mm exposed-pad package (package code TD1233+1C), optimized for PCB heat dissipation with θJA = 41°C/W on 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ILIM | Programmable current limit input | Analog voltage sets ITRIP via external resistor (18–250kΩ); enables precise stall-current tuning from ~0.2A to 2.8A. |
| 2 - | Not connected (NC) | No internal connection; must be left floating or tied to GND per layout guidelines. |
| 3 OUT2 | H-bridge low-side output | Drives one terminal of brushed DC motor; complements OUT1 to form full bridge; rated for 36V and 3.5A peak. |
| 4 IN2 | PWM logic input (IN2) | CMOS-compatible input controlling bridge state (reverse/brake/coast); paired with IN1 for 4-state operation. |
| 5 IN1 | PWM logic input (IN1) | CMOS-compatible input controlling bridge state (forward/brake/coast); paired with IN2 for 4-state operation. |
| 6 CDROUT | CDR monitor output | Open-drain signal asserted low only when internal current regulation is active - enables real-time CDR status monitoring. |
| 7 GNDP | Power ground | Primary power return path; must connect directly to low-impedance PCB ground plane for thermal and noise performance. |
| 8 ISEN | Current sense monitor output | Sources 1/5000× IOUT; requires external resistor to GND for voltage conversion - feeds MCU ADC for torque feedback. |
| 9 OUT1 | H-bridge high-side output | Drives opposite terminal of brushed DC motor; complements OUT2 to form full bridge; rated for 36V and 3.5A peak. |
| 10 FAULT | Fault indicator output | Open-drain active-low signal triggered by OCP, TSD, or UVLO - shared fault reporting for system-level diagnostics. |
| 11 VM | Main power supply input | 36V-rated input; requires local 1μF ceramic + 47μF bulk capacitor; powers H-bridge, gate drivers, and internal LDO. |
| 12 GNDA | Analog ground | Separate ground reference for ISEN, ILIM, and internal sensing circuitry - improves current measurement accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sensing (ICS) | Lossless sense-FET architecture eliminates external shunt resistors - saves >5mm² PCB area and reduces power loss by ~1.5W at 2A. |
| Configurable current drive regulation (CDR) | ILIM-programmable ITRIP with fixed 20μs tOFF ensures repeatable stall-current limiting without external timing components. |
| Dedicated CDROUT pin | Active-low open-drain output signals only during CDR activation - enables deterministic fault logging and avoids false triggers from FAULT pin. |
| Ultra-small TDFN12 package | 3mm × 3mm footprint with exposed pad - achieves 2A RMS drive capability in <10mm² area, ideal for handheld and portable motor systems. |
| Full protection suite | OCP (3.5A), UVLO (2.67V), TSD (165°C), and 8kV HBM ESD on OUT pins - ensures robust operation in electrically noisy industrial environments. |
Applications
| Brushed DC Motor Drive | Stepper Motor Drive (One Phase) |
|---|---|
|
Use Scenario: Bidirectional speed control of 12V/24V brushed DC motors in medical pumps, lab automation stages, and HVAC actuators. IC Role / Device Role / Timing Role: Full-bridge driver with integrated current regulation and real-time ISEN feedback - replaces discrete MOSFET + shunt + op-amp solutions. Use Value: Enables closed-loop torque control using ISEN voltage and eliminates need for external current-sense amplifiers or precision shunts. |
Use Scenario: Driving single coil of bipolar stepper motor in microstepping or half-step configurations where phase current must be tightly regulated. IC Role / Device Role / Timing Role: Single-phase H-bridge with programmable ITRIP and CDR - provides accurate current limiting during coil energization without external DAC or chopper control. Use Value: Reduces BOM count by integrating current sensing and regulation, while CDROUT confirms regulation engagement during each step pulse. |
| Latched Solenoid Control | Industrial Valve Actuation |
|
Use Scenario: Driving latching solenoids requiring high inrush current for pull-in followed by reduced hold current to minimize power and heat. IC Role / Device Role / Timing Role: H-bridge with dual-mode current control - uses CDR for initial 3.5A pull-in, then relies on PWM duty cycle reduction for 0.5A hold. Use Value: Eliminates need for external hold-current circuitry; ISEN feedback verifies solenoid engagement before transitioning to hold mode. |
Use Scenario: Controlling pneumatic/hydraulic valves in factory PLC I/O modules where reliability, thermal margin, and fault visibility are critical. IC Role / Device Role / Timing Role: Fault-tolerant motor driver with FAULT and CDROUT dual-alert outputs - reports overtemperature, overcurrent, and regulation events separately. Use Value: Enables predictive maintenance via CDROUT pulse counting during repeated valve actuations, indicating increasing coil resistance or mechanical binding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushed DC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB9051FTG | 40V, 3.5A peak; SPI interface; no integrated current sense output; requires external shunt and amplifier. | Lacks ISEN and CDROUT; suited for systems with existing ADC infrastructure and SPI master control. | Select when digital configurability (current limit, decay mode, diagnostics) outweighs analog simplicity and board space savings. |
| DRV8876N | 45V, 3.6A peak; integrated current sense but no CDR monitor output; ISEN accuracy ±5% vs. ±3% for MAX22207ATC+. | Provides basic current feedback but no dedicated signal confirming active regulation - limits stall-detection reliability. | Choose for cost-sensitive designs where CDROUT-level diagnostic granularity is unnecessary and wider supply range is required. |
Compared with TB9051FTG and DRV8876N, the MAX22207ATC+ uniquely combines high-accuracy ISEN output, dedicated CDROUT status signaling, and ultra-compact TDFN packaging - making it optimal for space-constrained, analog-feedback-driven motor systems requiring deterministic stall management.
Availability
MAX22207ATC+ is available at Aetrix Electronics and suitable for industrial automation, medical device actuation, and portable equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX22207ATC+ 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 MAX22207ATC+ belongs to the MAX2220x family of highly integrated brushed motor drivers - designed specifically for compact, thermally constrained systems needing accurate current regulation, minimal external components, and real-time fault observability.
FAQ
What is the function of the CDROUT pin on the MAX22207ATC+?
The CDROUT pin on the MAX22207ATC+ is an open-drain output that asserts low only when the internal current drive regulation (CDR) circuit is actively limiting motor current - for example, during startup or stall. Unlike the FAULT pin, CDROUT does not indicate failure conditions; instead, it provides deterministic confirmation that CDR is engaged, enabling precise software-based torque monitoring and diagnostics in the MAX22207ATC+.
How do I configure the current limit threshold for the MAX22207ATC+?
The current limit threshold (ITRIP) of the MAX22207ATC+ is set by connecting an external resistor between the ILIM pin and GND. Using Equation 1 (ITRIP = 50kV / RILIM), a 25kΩ resistor yields ~2A ITRIP. The MAX22207ATC+ supports RILIM values from 18kΩ to 250kΩ, enabling ITRIP tuning from approximately 0.2A to 2.8A - all without modifying firmware or external control logic.
Does the MAX22207ATC+ support fast-decay operation?
No, the MAX22207ATC+ supports only slow-decay (brake) and coast modes via its IN1/IN2 interface - it lacks dedicated fast-decay control logic or MODE pin functionality found in the MAX22202 variant. During CDR activation, the device enforces fixed 20μs slow-decay off-time. Fast-decay operation requires external PWM timing control and is not natively supported by the MAX22207ATC+ architecture.
What is the maximum continuous current the MAX22207ATC+ can deliver in practice?
The MAX22207ATC+ is rated for 2A RMS continuous current under JEDEC 4-layer board conditions at +25°C ambient. Real-world maximum depends on thermal design: with adequate copper area, thermal vias, and airflow, sustained 2A is achievable; exceeding this risks thermal shutdown (TSD at +165°C). Peak 3.5A is permitted only for short transients - not continuous operation - and is enforced by OCP, not thermal limits.
Can the ISEN output of the MAX22207ATC+ be used with a standard microcontroller ADC?
Yes - the ISEN pin of the MAX22207ATC+ sources a current equal to IOUT/5000 (e.g., 400µA at 2A), which becomes a voltage when routed through an external resistor to GND. Selecting RISEN = 2.5kΩ yields 1V full-scale for a 2A max current, matching common 1V–3.3V ADC ranges. No buffer is needed if the MCU ADC input impedance exceeds 100kΩ, as specified in the MAX22207ATC+ datasheet.
MAX22207ATC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tray
- 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)
MAX22207ATC+ FAQ
1.How can I place an order for MAX22207ATC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22207ATC+ 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 MAX22207ATC+ reliable?
The price and inventory of MAX22207ATC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22207ATC+ is usually 5 days.
3.What payment methods are accepted for MAX22207ATC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22207ATC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22207ATC+?
MAX22207ATC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22207ATC+ 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 MAX22207ATC+?
For technical support, including MAX22207ATC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22207ATC+ requirements.
6.How does Aetrix verify that MAX22207ATC+ is sourced from the original manufacturer or authorized distributors?
All MAX22207ATC+ 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 MAX22207ATC+ meets industry standards.
7.What is the process for return or replacement of MAX22207ATC+?
All MAX22207ATC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22207ATC+, 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 MAX22207ATC+ part is unused and in its original packaging.
Return procedure for MAX22207ATC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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