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Analog Devices Inc./Maxim Integrated MAX22205AUU+
- Part No.:
- MAX22205AUU+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX22205AUU+.pdf
- Description:
- DUAL H-BRIDGE FOR STEPPER AND BR
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
MAX22205AUU+ from Analog Devices is a 65V, 7.6A single H-bridge motor driver IC designed for brushed DC and half-stepper motor control. It integrates low-RON FETs (0.15Ω typical total), non-dissipative integrated current sensing (ICS), and programmable current drive regulation (CDR) with 16-step DAC control. It delivers up to 4ARMS at +24V with proper PCB thermal design and supports PWM control via DINA/DINB inputs.
For engineers reviewing the MAX22205AUU+ datasheet, MAX22205AUU+ pinout, MAX22205AUU+ application, or MAX22205AUU+ equivalent, this page provides verified technical context on its H-bridge architecture, current regulation accuracy (±6% over 2.2–6A range), fixed OFF-time configuration (16–24μs), thermal shutdown threshold (+155°C), and dual-package compatibility (TQFN38 and TSSOP38).
Technical Context
The MAX22205AUU+ implements a single-channel, high-side/low-side synchronous H-bridge with gate drivers powered by an internal charge pump (VCP = VM + 2.7V). Its current regulation loop uses integrated current sensing (ICS) - not external shunts - comparing real-time bridge current against a DAC-set ITRIP threshold, then enforcing decay for a user-configurable fixed tOFF (16–24μs via ROFF resistor).
Control logic accepts CMOS-level DINA/DINB inputs for direction and braking, EN for output enable/disable (high-impedance coasting), and DECAY1/DECAY2 for slow/mixed/fast decay mode selection. Fault management includes autonomous OCP (7.6A trip), UVLO (4.0V threshold), and thermal shutdown (TJ = +155°C), all signaled via open-drain FAULT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VM = +4.5V to +65V - supports wide-input industrial and battery-powered motor systems without external regulators |
| Total RON (HS + LS) | 0.15Ω typical - enables high-efficiency operation and low thermal dissipation at 4ARMS |
| Max Output Current | 7.6AMAX impulsive - OCP-limited peak current for capacitive load driving and startup surge handling |
| Current Regulation Accuracy | ±6% over 2.2–6A range - ensures precise torque control in stepper phase current or brushed DC startup limiting |
| Fixed OFF-Time (tOFF) | 16–24μs configurable via ROFF resistor - sets minimum decay duration for stable current regulation loop response |
| Current Sense Scaling (KISEN) | 7500 A/A - converts 1A motor current into 133μA ISEN output, enabling direct ADC interfacing with minimal external components |
| Thermal Shutdown Threshold | +155°C junction temperature - protects silicon integrity during sustained overload or poor PCB heatsinking |
Pinout & Package
The MAX22205AUU+ is available in two RoHS-compliant packages: 38-pin TQFN (5mm × 7mm, exposed pad) and 38-pin TSSOP (9.7mm × 4.4mm). Both packages share identical pin functions and logic mapping per the official Analog Devices pinout documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1A / OUT2A OUT1B / OUT2B | H-Bridge Output Terminals | Must be externally shorted in pairs (OUT1A=OUT2A, OUT1B=OUT2B) to form single full-bridge output; requires low-inductance, wide copper traces for 7.6A peak |
| DINA / DINB | PWM Direction Control Inputs | CMOS-compatible logic inputs defining forward/reverse/brake states per truth table; not intended for >1kHz switching |
| EN | Output Enable | Logic-high enables H-bridge; logic-low forces outputs to high-impedance coast state - no internal pull-up/pull-down |
| ISENA / ISENB | Analog Current Monitor Outputs | Provide current-proportional output (KISEN = 7500 A/A); tied together to monitor total bridge current during slow/fast decay |
| CDR | Open-Drain CDR Activity Indicator | Pulsed low each time internal current regulation activates - used for real-time loop monitoring and diagnostics |
| FAULT | Open-Drain Fault Output | Active-low assertion indicates OCP, UVLO, or TSD event; requires external pull-up to host controller supply |
| REF / ROFF | Analog Configuration Inputs | REF sets full-scale current (via RREF to GND); ROFF sets fixed tOFF (via RROFF to GND or short to VDD) |
| SLEEP | Active-Low Sleep Control | Drives entire device into ultra-low-power state (<20μA); wake-up latency is 2.7ms max - critical for battery longevity |
Key Features
| Feature | Design Value |
|---|---|
| Non-dissipative Integrated Current Sensing (ICS) | Eliminates external sense resistors, reducing board area by >30mm² and power loss by >1.5W at 4A - enables compact, efficient designs |
| Programmable Current Drive Regulation (CDR) | 16-step DAC-controlled ITRIP with ±6% accuracy enables repeatable torque matching across production units and temperature |
| Configurable Decay Modes | Slow/mixed/fast decay selection via DECAY1/DECAY2 pins - allows optimization of ripple, efficiency, and torque linearity per motor type |
| Integrated Charge Pump | Generates VCP = VM + 2.7V internally - eliminates need for external high-voltage gate driver supplies while supporting 65V operation |
| Robust Fault Protection Suite | OCP blanking time (3.5μs), UVLO hysteresis (0.12V), and TSD hysteresis (20°C) prevent nuisance tripping and ensure graceful recovery |
Applications
| Brushed DC Motor Control | Half-Stepper Motor Drive |
|---|---|
Use Scenario: Precision speed and torque control in portable medical pumps delivering fluid at regulated flow rates. IC Role / Device Role / Timing Role: Single H-bridge driver executing bidirectional PWM control with current-regulated startup to prevent stalling under variable load. Use Value: Integrated CDR limits inrush current to ≤6A during startup, avoiding microcontroller reset events and ensuring consistent delivery accuracy. |
Use Scenario: Positioning stage in automated test equipment requiring microstepping-capable motion with low vibration. IC Role / Device Role / Timing Role: Half-bridge driver controlling one winding pair of a bipolar stepper, using mixed-decay mode for smooth current transitions. Use Value: ISEN output enables closed-loop current feedback to the host MCU, improving step accuracy by compensating for winding resistance drift over temperature. |
| Solenoid Actuation | Latched Valve Control |
Use Scenario: Industrial pneumatic valve actuator requiring fast, high-force pull-in followed by hold-current reduction. IC Role / Device Role / Timing Role: H-bridge delivering 7.6A peak for solenoid energization, then regulating to 2A hold current via CDR. Use Value: Elimination of external sense resistor reduces system BOM count and thermal stress, enabling smaller enclosure designs. |
Use Scenario: HVAC damper control where latching valves must maintain position without continuous power draw. IC Role / Device Role / Timing Role: Driver enabling controlled coil current ramp-up/down during latch/unlatch sequences, monitored via FAULT and CDR pins. Use Value: SLEEP mode reduces quiescent current to 20μA - extends battery life in wireless valve controllers beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB9051FTG | 40V max rating, 5.5AMAX, no integrated current sense - requires external shunt and op-amp for current monitoring | Lower voltage/current capability; suited for 24V automotive body electronics, not 48–60V industrial actuators | Select when cost sensitivity outweighs integration benefits and external sensing is acceptable |
| DRV8876N | 65V rating, 7.2AMAX, integrated current sense but only 12-bit resolution vs. MAX22205's 16-step DAC; no CDR activity indicator (CDR pin) | Lacks dedicated CDR monitoring pin and has coarser current regulation granularity - less suitable for precision torque-critical systems | Select for simpler implementations where diagnostic visibility of current regulation activity is not required |
Compared with TB9051FTG and DRV8876N, the MAX22205AUU+ offers superior current regulation fidelity (±6% vs. ±10%), diagnostic visibility (CDR pin), and space savings (no external shunt), making it optimal for compact, high-reliability industrial motion systems.
Availability
MAX22205AUU+ is available at Aetrix Electronics and suitable for brushed DC motor control, half-stepper positioning, solenoid actuation, and latched valve systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX22205AUU+ 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 technologies, serving industrial, automotive, communications, and healthcare markets with precision power and motion solutions.
The MAX22205AUU+ belongs to Analog Devices' high-voltage motor driver product line, engineered specifically for space-constrained, thermally demanding industrial motion applications requiring accurate current regulation and robust fault resilience.
FAQ
What is the maximum continuous current the MAX22205AUU+ can deliver?
The MAX22205AUU+ delivers up to 4ARMS at VM = +24V and TA = +25°C with adequate PCB thermal design (four-layer board, ground plane). This is limited by thermal dissipation, not OCP - the 7.6AMAX rating is for impulsive, short-duration loads. Actual RMS current depends on layout, ambient temperature, and airflow.
Does the MAX22205AUU+ require external current sense resistors?
No. The MAX22205AUU+ uses non-dissipative Integrated Current Sensing (ICS) to measure bridge current internally. This eliminates external shunt resistors, saving PCB area and power loss. Current monitoring is provided via ISENA/ISENB analog outputs scaled at 7500 A/A.
How is current regulation configured on the MAX22205AUU+?
Current regulation on the MAX22205AUU+ is set via the REF pin: connect a resistor from REF to GND to define full-scale current (IFS = 6A max). The ISET[3:0] pins select one of 16 DAC steps, allowing fine-grained adjustment of the trip threshold (ITRIP) with ±6% accuracy over 2.2–6A.
What package options are available for the MAX22205AUU+?
The MAX22205AUU+ is offered in two pin-compatible packages: 38-pin TQFN (5mm × 7mm, exposed pad) and 38-pin TSSOP (9.7mm × 4.4mm). Both share identical pinout, electrical characteristics, and thermal performance specifications - selection depends on board space and assembly requirements.
What protections does the MAX22205AUU+ include?
The MAX22205AUU+ integrates Overcurrent Protection (OCP, 7.6A trip), Undervoltage Lockout (UVLO, 4.0V threshold), and Thermal Shutdown (TSD, +155°C). All faults assert the open-drain FAULT pin low. OCP includes 3.5μs blanking time; TSD features 20°C hysteresis for stable recovery.
MAX22205AUU+ 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
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- On/Off, PWM
- Technology:
- NMOS
- Step Resolution:
- 1, 1/2
- Applications:
- General Purpose
- Current - Output:
- 7.6A
- 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
MAX22205AUU+ FAQ
1.How can I place an order for MAX22205AUU+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22205AUU+ 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 MAX22205AUU+ reliable?
The price and inventory of MAX22205AUU+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22205AUU+ is usually 5 days.
3.What payment methods are accepted for MAX22205AUU+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22205AUU+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22205AUU+?
MAX22205AUU+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22205AUU+ 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 MAX22205AUU+?
For technical support, including MAX22205AUU+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22205AUU+ requirements.
6.How does Aetrix verify that MAX22205AUU+ is sourced from the original manufacturer or authorized distributors?
All MAX22205AUU+ 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 MAX22205AUU+ meets industry standards.
7.What is the process for return or replacement of MAX22205AUU+?
All MAX22205AUU+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22205AUU+, 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 MAX22205AUU+ part is unused and in its original packaging.
Return procedure for MAX22205AUU+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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