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Analog Devices Inc./Maxim Integrated MAX22208AUU+T
- Part No.:
- MAX22208AUU+T
- 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+T.pdf
- Description:
- DUAL H-BRIDGE FOR STEPPER AND BR
- Quantity:
- Payment:
- Shipping:
Inventory:3,485
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Product details
Overview
The MAX22208AUU+T from Analog Devices is a quad half H-bridge motor driver IC designed for high-efficiency 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 precision fluid control.
For engineers reviewing the MAX22208AUU+T datasheet, MAX22208AUU+T pinout, MAX22208AUU+T application, or MAX22208AUU+T equivalent, key selection criteria include per-channel 2A RMS current capability, 38-pin TSSOP package thermal performance (θJA = 45°C/W on 4-layer board), ISEN_ current-monitor scaling factor (7500 A/A), and SLEEP-mode wake-up time (2.7ms).
Technical Context
The MAX22208AUU+T implements four fully independent half-bridge gate drivers with integrated charge-pump circuitry (VCP, CP1, CP2) enabling high-side FET operation up to 65V VM. Each channel uses separate DIN_ and EN_ logic inputs with truth-table-defined control: EN_=0 forces three-state output, while EN_=1 enables PWM-driven high- or low-side conduction based on DIN_ level.
Its integrated current-sense architecture sources a proportional replica current (IISEN = IOUT / 7500) exclusively during low-side FET conduction, output to dedicated ISEN1–ISEN4 pins. Fault management includes autoretry OCP (3.8A threshold, 3ms retry interval), thermal shutdown at +155°C (20°C hysteresis), and UVLO activation below 3.75V on VM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Operating Voltage | 65V VM - supports industrial 24V/48V bus systems and transient overvoltage tolerance |
| Peak Output Current | 3.8A per half-bridge - sustains short-duration capacitive loads without external current limiting |
| RMS Output Current | 2A per half-bridge - thermally limited; requires PCB ground plane and thermal vias for full rating |
| Total RON (HS + LS) | 0.3Ω typical - reduces conduction loss and self-heating at 2A RMS (1.2W/channel max) |
| Current-Sense Scaling | 7500 A/A - generates 267µA at IOUT = 2A, enabling direct ADC interfacing with 3.75kΩ sense resistor |
| Fault Response Time | OCP blanking time = 2.2–3.5µs - rejects switching noise while detecting true overcurrent events |
| Sleep Current | 20µA - enables ultra-low-power standby in battery-operated valve controllers |
Pinout & Package
The MAX22208AUU+T is housed in a 4.4mm × 9.7mm, 38-pin TSSOP package with exposed pad (EP) for thermal and electrical grounding. Pin numbering follows standard TSSOP top-view convention with EP connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | Half-bridge power outputs | Drive solenoid coils or motor windings; each connects to VM via high-side FET and PGND via low-side FET |
| DIN1–DIN4 | PWM input (CMOS) | Controls high/low-side conduction when corresponding EN_ is asserted; VIH = 1.2V, VIL = 0.65V |
| EN1–EN4 | Channel enable (active-high) | Assert high to activate driver; low forces three-state output regardless of DIN_ state |
| ISEN1–ISEN4 | Current-sense monitor outputs | Source proportional current only during low-side FET conduction; requires external RISEN to GND for voltage generation |
| FAULT | Active-low open-drain fault indicator | Drives low on OCP, TSD, or UVLO; requires 2kΩ pull-up to MCU supply for logic-level signaling |
| SLEEP | Global sleep control (active-low) | Three-states all outputs, disables charge pump and internal regulators; tWAKE = 2.7ms max |
| VM | Main power rail input | 4.5V–65V supply; bypassed with ≥10µF electrolytic + 1µF ceramic near device |
| VDD | 1.8V linear regulator output | Powers internal logic; requires 2.2µF ceramic capacitor to GND; supplies ≤20mA load |
Key Features
| Feature | Design Value |
|---|---|
| Four independent half-bridge drivers | Enables mixed-load control - e.g., two solenoids + one DC motor - without cross-talk or shared timing constraints |
| Integrated non-dissipative current sensing | Eliminates 5W+ external shunt resistors; reduces PCB area by >25mm² and improves system efficiency by 2–3% at 2A |
| Autoretry overcurrent protection | 3ms retry interval allows brief fault recovery without MCU intervention; prevents latch-up during startup surges |
| Thermal shutdown with hysteresis | +155°C trip / +135°C release ensures stable thermal cycling and avoids oscillation near limit |
| Charge-pump high-side drive | Self-contained VCP generation (VM + 2.7V) enables 100% duty-cycle operation without external bootstrap components |
Applications
| Industrial Valve Actuation | Robotic Joint Control |
|---|---|
Use Scenario: Driving latched solenoid valves in pneumatic/hydraulic control panels requiring precise on/off timing and position feedback. IC Role / Device Role / Timing Role: Quad half-bridge provides independent drive for four valves; ISEN_ outputs feed ADC for closed-loop current verification and coil health monitoring. Use Value: Integrated current sensing replaces discrete shunts, reducing BOM count and enabling real-time diagnostics without added layout complexity. |
Use Scenario: Controlling dual-axis brushed DC motors in collaborative robot arms where torque consistency and thermal safety are critical. IC Role / Device Role / Timing Role: Two channels per motor (full-bridge mode); FAULT pin signals OCP/TSD events to safety controller within <10µs. Use Value: 2A RMS per channel supports continuous 12W mechanical output; thermal shutdown prevents damage during stall conditions. |
| Programmable Fluid Dispensing | Stepper Motor Microstepping Driver |
Use Scenario: Precision metering pumps in medical analyzers requiring pulse-width-controlled solenoid actuation and flow calibration. IC Role / Device Role / Timing Role: Four independent DIN_/EN_ pairs enable synchronized multi-pump sequencing; SLEEP mode minimizes idle power between dispense cycles. Use Value: 3.8A peak current handles cold-start inrush; 0.3Ω RON ensures minimal voltage drop across 24V supply rails. |
Use Scenario: Unipolar stepper motor control in lab automation stages requiring microstepping via PWM-modulated half-bridge pairs. IC Role / Device Role / Timing Role: Two half-bridges per phase (OUT1/OUT2 for Phase A, OUT3/OUT4 for Phase B); current-sense feedback enables adaptive current regulation. Use Value: ISEN_ scaling factor (7500 A/A) enables 0.1A resolution with 12-bit ADC and 3.75kΩ resistor, supporting 1/16-step accuracy. |
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 |
|---|---|---|---|
| TB9051FTG | 40V max VM, 3.5A peak, no integrated current sense; requires external shunt + op-amp | Lacks ISEN_ output and autoretry OCP; suited for cost-sensitive, lower-voltage systems without current monitoring | Select if operating ≤40V and external sensing is acceptable; avoid when space-constrained or diagnostic capability required |
| DRV8876PWPR | 65V max VM, 3.6A peak, integrated current sense (analog voltage output), no SLEEP pin | Provides VISEN instead of IISEN; lacks global sleep control and has higher quiescent current (1.5mA vs. 20µA) | Prefer for analog-sensing architectures; not suitable for ultra-low-power standby or systems needing coordinated channel disable |
Compared with TB9051FTG and DRV8876PWPR, the MAX22208AUU+T uniquely combines 65V operation, true current-proportional ISEN_ output, sub-µA sleep current, and autoretry OCP-making it optimal for compact, intelligent, and energy-conscious industrial actuators.
Availability
The MAX22208AUU+T is available at Aetrix Electronics and suitable for industrial valve actuation, robotic joint control, programmable fluid dispensing, and stepper motor microstepping applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX22208AUU+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 industrial, automotive, communications, and healthcare markets since 1965.
The MAX22208AUU+T belongs to Analog Devices' high-voltage motor driver product line, engineered specifically for space-constrained, thermally demanding industrial motion control applications requiring integrated protection, current visibility, and flexible load configuration.
FAQ
What is the maximum continuous current the MAX22208AUU+T can deliver per channel?
The MAX22208AUU+T supports 2A RMS per half-bridge continuously under proper thermal conditions - including a 4-layer PCB with adequate ground plane, thermal vias to the exposed pad, and ambient temperature ≤+85°C. This rating is thermally limited, not current-limited; exceeding 2A RMS risks junction temperature rise beyond safe operating limits even if OCP does not trigger.
How does the integrated current sensing in the MAX22208AUU+T differ from traditional shunt-based methods?
The MAX22208AUU+T uses non-dissipative current mirroring to generate a proportional output current (IISEN = IOUT / 7500) on each ISEN_ pin - eliminating power loss and board space associated with 5W+ external shunt resistors. Unlike voltage-based shunts, this method avoids offset drift and common-mode rejection issues, delivering accurate current data only during low-side FET conduction.
Can the MAX22208AUU+T drive a bipolar stepper motor in full-bridge mode?
Yes - the MAX22208AUU+T can configure two half-bridges per phase (e.g., OUT1/OUT2 for Phase A, OUT3/OUT4 for Phase B) to drive a bipolar stepper motor. Its 65V VM rating and 2A RMS per channel support NEMA 17–23 motors; however, microstepping requires external PWM generation and current profiling logic, as the IC does not include built-in indexer or decay control.
What happens to the outputs of the MAX22208AUU+T during undervoltage lockout (UVLO)?
When VM drops below 3.75V (rising threshold), the MAX22208AUU+T immediately three-states all OUT1–OUT4 outputs and drives the FAULT pin low. Outputs remain in high-impedance state until VM exceeds 4.25V (falling hysteresis), at which point normal operation resumes based on current DIN_/EN_ states - ensuring clean restart without shoot-through risk.
Is the MAX22208AUU+T pin-compatible with other devices in the MAX222xx family?
No - the MAX22208AUU+T is not pin-compatible with other MAX222xx variants. While functionally related, pin assignments (e.g., ISEN_, CP1, CP2 locations) and package footprints differ between TQFN (MAX22208ATU+T) and TSSOP (MAX22208AUU+T) versions. PCB layout must be specific to the 38-pin TSSOP footprint and land pattern number 90-0435.
MAX22208AUU+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
- 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+T FAQ
1.How can I place an order for MAX22208AUU+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22208AUU+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 MAX22208AUU+T reliable?
The price and inventory of MAX22208AUU+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22208AUU+T is usually 5 days.
3.What payment methods are accepted for MAX22208AUU+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22208AUU+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22208AUU+T?
MAX22208AUU+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22208AUU+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 MAX22208AUU+T?
For technical support, including MAX22208AUU+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22208AUU+T requirements.
6.How does Aetrix verify that MAX22208AUU+T is sourced from the original manufacturer or authorized distributors?
All MAX22208AUU+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 MAX22208AUU+T meets industry standards.
7.What is the process for return or replacement of MAX22208AUU+T?
All MAX22208AUU+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22208AUU+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 MAX22208AUU+T part is unused and in its original packaging.
Return procedure for MAX22208AUU+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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