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Analog Devices Inc./Maxim Integrated MAX22208AUU+
- Part No.:
- MAX22208AUU+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX22208AUU+.pdf
- Description:
- DUAL H-BRIDGE FOR STEPPER AND BR
- Quantity:
- Payment:
- Shipping:
Inventory:2,074
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Product details
Overview
The MAX22208AUU+ from Analog Devices is a quad half H-bridge motor driver IC designed for precision load control in industrial and embedded motion systems. It integrates four independent 65V, 3.8A peak current drivers with integrated non-dissipative current sensing, 0.3Ω typical total RON, and active fault protection (OCP, TSD, UVLO). It drives solenoids, brushed DC motors, or stepper motors in valve actuation, robotic joints, and automated test equipment.
For engineers reviewing the MAX22208AUU+ datasheet, MAX22208AUU+ pinout, MAX22208AUU+ application, or MAX22208AUU+ equivalent, this page delivers verified electrical specs, thermal limits, PWM control timing (tEN = 0.6μs), ISEN scaling factor (KISEN = 7500 A/A), and package-specific layout guidance for the 38-pin TSSOP.
Technical Context
The MAX22208AUU+ implements four fully independent half-bridge channels, each controlled by dedicated DIN_ and EN_ logic inputs with truth-table-defined output states (high-side on, low-side on, or high-impedance). Its charge-pump architecture (VCP, CP1, CP2) enables high-side FET gate drive up to 65V VM without external bootstrap components.
Integrated unipolar low-side current sensing feeds proportional analog outputs (ISEN1–ISEN4) with 0.5μs settling time and 1.1V max output range; each ISEN pin requires an external resistor to generate a voltage for ADC sampling. Fault management includes autoretry OCP (3.8A threshold, 3ms retry interval), +155°C thermal shutdown with 20°C hysteresis, and VM UVLO (4.0V threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Operating Voltage | 65V - Supports industrial 24V/48V bus rails and transient surges up to 70V absolute max. |
| Peak Output Current | 3.8A per channel - Short-duration impulse rating for driving capacitive loads or motor startup torque. |
| RMS Output Current | 2A per channel - Thermally limited; actual value depends on PCB copper area, ground plane, and airflow. |
| Total RON | 0.3Ω (typ) - Sum of high-side + low-side FET on-resistance at +25°C, enabling >90% efficiency at 2A. |
| Current Sense Scaling | KISEN = 7500 A/A - Converts 2A load current into 266μA ISEN output, enabling precise torque feedback via external resistor. |
| Fault Response Time | tOCP blanking = 3.5μs (max) - Prevents false triggering during PWM switching transients. |
| Thermal Shutdown | TSD = +155°C (typ), hysteresis = 20°C - Ensures safe recovery before re-enabling outputs after overtemperature event. |
Pinout & Package
The MAX22208AUU+ is packaged in a 4.4mm × 9.7mm, 38-pin TSSOP with exposed pad (EP) for thermal dissipation. Pin assignments are validated per Analog Devices' official TSSOP pin configuration diagram (Outline 21-0714, Land Pattern 90-0435).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | Half-Bridge Output Terminals | Drive solenoid coils or motor windings; each pair forms one half-bridge with VM and PGND return paths. |
| DIN1–DIN4, EN1–EN4 | CMOS Logic Inputs | DIN_ sets output state (HS/LS) when EN_ = high; EN_ = low forces three-state output - no PWM on EN_. |
| ISEN1–ISEN4 | Analog Current Monitor Outputs | Source current proportional to sensed low-side FET current; requires external RISEN to GND for voltage generation. |
| FAULT | Active-Low Open-Drain Fault Indicator | Pulled low during OCP, TSD, or UVLO; requires external 2kΩ pull-up to MCU supply for interrupt signaling. |
| SLEEP | Active-Low Sleep Control | Drives all outputs to high-impedance and disables charge pump; wake-up time = 2.7ms (max) after logic-high assertion. |
| VCP, CP1, CP2 | Charge-Pump Circuit Nodes | Generate gate-drive voltage for high-side FETs; require 22nF flying cap (CP1–CP2) and 1μF VCP-to-VM decoupling. |
| VM, PGND, GND, EP | Power and Ground Connections | VM supplies power stage (4.5–65V); PGND carries high-current return; GND/EP form low-noise analog reference and thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| Four Independent Half-Bridge Channels | Enables mixed-load control - e.g., two DC motors + two solenoids - with no cross-channel interference or shared timing constraints. |
| Integrated Non-Dissipative Current Sensing | Eliminates 5W+ external shunt resistors, reduces board area by >25mm² per channel, and avoids power loss in sensing path. |
| Autoretry Overcurrent Protection | 3ms retry interval allows brief fault recovery without MCU intervention; prevents latch-up during momentary overload conditions. |
| Thermally Optimized TSSOP Package | θJA = 45°C/W (four-layer board) enables 2A RMS operation without heatsink in standard industrial PCB layouts. |
| 1.8V Linear Regulator (VDD) | Provides clean, regulated supply for internal logic and level shifters; bypassed with 2.2μF capacitor for noise immunity. |
Applications
| Brushed DC Motor Control | Solenoid Actuation |
|---|---|
Use Scenario: Bidirectional speed and direction control of 24V DC motors in conveyor modules and linear actuators. IC Role / Device Role / Timing Role: Quad half-bridge provides full-H-bridge equivalents (OUT1/OUT2 + OUT3/OUT4) with independent PWM for torque regulation and braking. Use Value: Integrated current sense enables closed-loop current limiting and stall detection without external amplifiers or shunts. | Use Scenario: High-reliability on/off and proportional control of hydraulic/pneumatic solenoid valves in factory automation. IC Role / Device Role / Timing Role: Each half-bridge drives one solenoid coil; EN_/DIN_ sequencing controls energize/de-energize and hold current profiles. Use Value: 3.8A peak rating supports fast valve response; OCP protects against coil short-circuit failure modes. |
| Stepper Motor Microstepping | Latched Solenoid Valves |
Use Scenario: Single-axis microstepping control for NEMA 17 stepper motors in lab instrumentation and precision dispensing systems. IC Role / Device Role / Timing Role: Two half-bridges per phase (e.g., OUT1/OUT2 for Phase A, OUT3/OUT4 for Phase B) enable bipolar drive with current regulation. Use Value: ISEN feedback allows real-time phase current adjustment to maintain torque across speed ranges and reduce resonance. | Use Scenario: Low-power latching of bistable solenoid valves in energy-sensitive applications like battery-powered irrigation controllers. IC Role / Device Role / Timing Role: One half-bridge delivers high-current pulse for latching; second provides reverse polarity pulse for unlatching. Use Value: 65V VM rating accommodates back-EMF suppression circuits; SLEEP mode reduces quiescent current to 20μA during idle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad half-bridge driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX22207ATU+ | Same die, 38-pin TQFN package; θJA = 28°C/W (four-layer board) - lower thermal resistance than TSSOP. | Better suited for space-constrained, high-power-density designs requiring higher RMS current capability. | Select MAX22207ATU+ when PCB layout allows TQFN and thermal performance is critical above 1.8A RMS per channel. |
| TB9057FG | Automotive-grade (AEC-Q100), 40V max VM, 3.5A peak, no integrated current sense - requires external shunt + amplifier. | Targeted for automotive body electronics; lacks ISEN functionality and has lower voltage/current ratings. | Choose TB9057FG only for automotive-qualified designs where 40V VM and absence of current monitoring are acceptable. |
Compared with MAX22207ATU+, the MAX22208AUU+ trades thermal performance for easier hand-soldering and legacy TSSOP footprint compatibility; versus TB9057FG, it offers higher voltage, integrated sensing, and industrial temperature range but lacks AEC-Q100 certification.
Availability
The MAX22208AUU+ is available at Aetrix Electronics and suitable for industrial motor control, automated valve actuation, precision stepper positioning, and battery-powered solenoid systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX22208AUU+ 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 industrial, automotive, communications, and healthcare markets.
The MAX22208AUU+ belongs to Analog Devices' robust industrial motor driver product line, engineered for reliable, high-efficiency load control in harsh environments with integrated protection and diagnostic features.
FAQ
What is the maximum continuous current the MAX22208AUU+ can deliver per channel?
The MAX22208AUU+ supports a maximum RMS current of 2A per half-bridge channel under typical thermal conditions (four-layer PCB, adequate ground plane). This limit is thermally derived - actual achievable RMS current depends on PCB copper weight, heatsinking, and ambient airflow. The 3.8A rating is for short-duration peak transients only, enforced by overcurrent protection.
Does the MAX22208AUU+ require external current-sense resistors?
No, the MAX22208AUU+ integrates non-dissipative current sensing and does not require external power shunt resistors. It outputs a proportional current (IISEN = IOUT / 7500) on each ISEN_ pin; an external resistor to GND converts this to a measurable voltage for ADC input - eliminating heat-generating, board-space-consuming shunts.
How does the SLEEP pin function on the MAX22208AUU+?
The SLEEP pin on the MAX22208AUU+ is an active-low control that places all four half-bridge outputs in high-impedance state, disables the internal charge pump, and reduces quiescent current to 20μA. Driving SLEEP high resumes normal operation with a 2.7ms wake-up delay. A pull-down resistor is recommended to ensure safe default disable state.
Can the MAX22208AUU+ drive a full H-bridge configuration?
Yes, the MAX22208AUU+ can configure two half-bridges as one full H-bridge - for example, using OUT1/OUT2 for one motor winding and OUT3/OUT4 for the second - enabling bidirectional control of brushed DC or bipolar stepper motors. Each half-bridge remains independently controllable via its own DIN_/EN_ pair.
What protection features are built into the MAX22208AUU+?
The MAX22208AUU+ integrates overcurrent protection (OCP) per channel with 3.8A threshold and autoretry, thermal shutdown at +155°C with 20°C hysteresis, and undervoltage lockout (UVLO) on VM (4.0V threshold). All faults assert the open-drain FAULT pin low, allowing centralized system-level fault handling.
MAX22208AUU+ 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
- Output Configuration:
- Half Bridge (4)
- Applications:
- DC Motors, Solenoids
- Interface:
- PWM
- Load Type:
- Inductive
- Technology:
- NMOS
- Rds On (Typ):
- 150mOhm LS, 150mOhm HS
- Current - Output / Channel:
- 2A
- Current - Peak Output:
- 3.8A
- Voltage - Supply:
- 4.5V ~ 65V
- Voltage - Load:
- 4.5V ~ 65V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Features:
- Charge Pump
- Fault Protection:
- Current Limiting, Over Temperature, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-TSSOP-EP
MAX22208AUU+ FAQ
1.How can I place an order for MAX22208AUU+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22208AUU+ 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 MAX22208AUU+ reliable?
The price and inventory of MAX22208AUU+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22208AUU+ is usually 5 days.
3.What payment methods are accepted for MAX22208AUU+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22208AUU+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22208AUU+?
MAX22208AUU+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22208AUU+ 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 MAX22208AUU+?
For technical support, including MAX22208AUU+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22208AUU+ requirements.
6.How does Aetrix verify that MAX22208AUU+ is sourced from the original manufacturer or authorized distributors?
All MAX22208AUU+ 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 MAX22208AUU+ meets industry standards.
7.What is the process for return or replacement of MAX22208AUU+?
All MAX22208AUU+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22208AUU+, 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 MAX22208AUU+ part is unused and in its original packaging.
Return procedure for MAX22208AUU+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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