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Analog Devices Inc./Maxim Integrated MAX16984AATJA/V+
- Part No.:
- MAX16984AATJA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX16984AATJA/V+.pdf
- Description:
- AUTOMOTIVE USB-C PROTECTOR/EMULA
- Quantity:
- Payment:
- Shipping:
Inventory:339
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Product details
Overview
MAX16984AATJA/V+ from Analog Devices is an automotive-grade, 32-pin TQFN integrated power management IC combining a 5V/3.0A synchronous step-down DC-DC converter, USB 2.0 host charger adapter emulator (BC1.2/CDP/DCP/Samsung/iPhone/iPad/YD/T 1591-2009 compliant), and high-ESD USB protection switches with ±15kV air/±8kV contact IEC 61000-4-2 and ISO 10605 protection. It delivers regulated 5V output directly from car battery (4.5V–28V input, 40V load dump tolerant) for USB host ports in infotainment head units.
For engineers reviewing the MAX16984AATJA/V+ datasheet, MAX16984AATJA/V+ pinout, MAX16984AATJA/V+ application, or MAX16984AATJA/V+ equivalent, this page provides verified technical context on its dual-role operation as both a high-current buck regulator and intelligent USB charging port emulator - including I²C/GPIO configuration modes, spread-spectrum EMI reduction, cable-drop compensation, and robust fault diagnostics critical for automotive radio, telematics, and connectivity systems.
Technical Context
The MAX16984AATJA/V+ integrates a fully synchronous buck converter with internal high-side (54mΩ typ) and low-side (72mΩ typ) MOSFETs, resistor- or I²C-programmable switching frequency (310kHz–2.2MHz), spread-spectrum oscillator, and skip-mode operation to achieve <1.8mA quiescent current at no load. Its USB subsystem includes dual 4Ω analog switches (1GHz bandwidth), integrated BC1.2/CDP/DCP detection logic, and dedicated termination resistors for Samsung 2.0A and Apple 2.4A charging modes.
It implements advanced safety features including short-to-battery protection on both DC-DC and USB pins, overtemperature shutdown (165°C), thermal warning (140°C), and comprehensive ESD protection (±15kV air/±8kV contact on HVDP/HVDM per IEC 61000-4-2 and ISO 10605). The device supports remote feedback via SHIELD pin for cable voltage drop compensation and uses a configurable current-sense amplifier (19.4V/V gain) with user-selectable overcurrent thresholds from 0.3A to 3.3A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V continuous; withstands 40V load dump transients - enables direct connection to automotive battery without external transient suppressors. |
| Output Voltage & Current | 5V nominal, up to 3.0A continuous at +105°C - powers USB peripherals and downstream transceivers in head units and hubs. |
| USB Switch On-Resistance | 4Ω max (typical 4Ω) - ensures minimal insertion loss and signal integrity for USB 2.0 Hi-Speed (480Mbps) data pass-through. |
| ESD Protection Level | ±15kV air / ±8kV contact per IEC 61000-4-2 and ISO 10605 - meets stringent automotive EMC requirements for USB port robustness. |
| Switching Frequency Range | 310kHz to 2.2MHz, resistor- or I²C-programmable - allows optimization of efficiency vs. EMI vs. inductor size in space-constrained layouts. |
| Operating Temperature | -40°C to +125°C ambient - qualified for under-hood and dashboard-mounted automotive electronics. |
| Cable Compensation | User-adjustable 5V–7V output range via SHIELD pin - actively compensates for IR drop in captive automotive USB cables. |
| Current Limit Accuracy | ±5% user-adjustable USB load current limit - enables precise compliance with OEM-defined charging profiles. |
Pinout & Package
MAX16984AATJA/V+ is housed in a 32-pin, 5mm × 5mm × 0.75mm TQFN package with exposed pad (EP), RoHS-compliant, thermal resistance θJA = 29°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–5, 22–23, 31, EP | AGND / PGND / N.C. / Exposed Pad | Analog and power ground connections; EP must be soldered to multiple GND planes using 3×3 via grid for thermal and EMI performance. |
| 6–7, 9–10 | HVDM / HVDP / DM / DP | High-voltage protected D−/D+ outputs (to USB connector) and low-voltage D−/D+ inputs (to transceiver) - enable bidirectional 480Mbps data pass-through with ESD isolation. |
| 11, 18, 24–25 | IN / ENBUCK / CONFIG1 / HVEN | Logic enable clamping input (3.3V-tolerant), buck enable control, resistor-based configuration, and battery-voltage system enable - support standalone or I²C-controlled operation. |
| 12, 14–17 | INT (ATTACH) / FAULT / SCL / SDA / DATA_MODE | Active-low attach interrupt, open-drain fault indicator, I²C interface pins, and mode selection for SDP/CDP/DCP - provide real-time diagnostics and USB port state visibility. |
| 19–21, 26–27 | BST / LX / SUPSW | Bootstrap supply for high-side gate drive, inductor switch node, and internal high-side switch supply - define core power stage topology and transient handling capability. |
| 28–32 | VBMON / SENSP / SENSN / N.C. / BIAS | USB VBUS monitoring, current-sense amplifier inputs (for 3.0A regulation), and 5V LDO output powering internal logic - enable closed-loop current limiting and self-powered operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5V/3A Buck + USB Emulator | Eliminates need for separate DC-DC and USB charge controller ICs - reduces BOM count, PCB area, and design validation effort in automotive infotainment. |
| Spread-Spectrum Oscillator | Reduces peak EMI by ±3.4% frequency dithering - helps meet CISPR-25 Class 5 radiated emissions limits without added shielding or filtering. |
| Programmable Cable Compensation | Adjusts output from 5V to 7V via SHIELD pin - maintains ≥4.75V at portable device end of long captive cables (e.g., center console to rear seat). |
| Multi-Standard Charging Detection | Hardware-accelerated BC1.2 CDP/DCP, Samsung 2.0A, Apple 2.4A, and YD/T 1591-2009 recognition - ensures fast, reliable charging across global vehicle fleets and consumer devices. |
| Advanced Diagnostics via I²C | Real-time readout of VBUS, USB current, die temperature, and fault status - enables predictive maintenance and automated USB port health monitoring in telematics gateways. |
| Short-to-Battery Protection | Active protection on both DC-DC output and USB D+/D− pins - prevents latch-up and damage during wiring faults or connector shorts in harsh automotive environments. |
Applications
| Automotive Radio Head Unit | Telematics Control Unit (TCU) |
|---|---|
|
Use Scenario: Powering USB-A ports in OEM infotainment systems for smartphone connectivity and media playback. IC Role / Device Role / Timing Role: Primary 5V power source and USB charging port emulator with BC1.2/CDP/DCP detection logic. Use Value: Delivers stable 3.0A output while maintaining USB 2.0 Hi-Speed data integrity and supporting rapid charging of diverse mobile devices without firmware updates. |
Use Scenario: Providing isolated, robust USB power and communication for embedded modems, GNSS receivers, and OTA update interfaces. IC Role / Device Role / Timing Role: Automotive-grade USB power manager with ESD-hardened data path and diagnostic telemetry via I²C. Use Value: Enables fail-safe USB port operation in mission-critical telematics applications, with thermal warning, fault reporting, and short-to-battery resilience. |
| Automotive Connectivity Hub | Dedicated USB Charging Module |
|
Use Scenario: Supporting multi-port USB hubs in rear-seat entertainment or vehicle-to-everything (V2X) gateway modules. IC Role / Device Role / Timing Role: High-current buck regulator with independent USB switch control and per-port current limiting. Use Value: Allows simultaneous charging of multiple devices while maintaining strict current limits and preventing bus overloads in shared power domains. |
Use Scenario: Standalone USB charging solution for aftermarket dashcams, OBD-II adapters, or wireless charging pads. IC Role / Device Role / Timing Role: Integrated USB host charger emulator with programmable voltage/current and cable compensation. Use Value: Achieves OEM-level charging compatibility (Apple/Samsung/BC1.2) in compact form factor with no external microcontroller required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive USB power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16984AATJA+ | Same die, identical electrical specs and pinout; differs only in tape-and-reel packaging and RoHS marking (no "/V+") - functionally interchangeable. | No difference in automotive radio, TCU, or hub use cases; suitable for same PCB layout and firmware. | Select MAX16984AATJA+ when standard RoHS-compliant packaging suffices and /V+ suffix is not required for traceability or qualification. |
| MAX20419ATGA/V+ | Single-channel 5V/3A automotive buck with USB 2.0 switch but no integrated BC1.2 emulator or cable compensation - requires external MCU for charging protocol handling. | Lacks hardware-based Samsung/iPhone/iPad charging detection and remote feedback adjustment; suited for simpler USB power-only designs. | Choose MAX20419ATGA/V+ only if charging emulation is handled externally and cable compensation is unnecessary. |
Compared with MAX16984AATJA/V+, the MAX16984AATJA+ offers identical functionality in alternate packaging, while the MAX20419ATGA/V+ reduces integration by omitting autonomous charging detection and adaptive voltage compensation - making it less suitable for full-featured automotive USB host applications requiring plug-and-play compatibility.
Availability
MAX16984AATJA/V+ is available at Aetrix Electronics and suitable for automotive radio head units, telematics control units, and connectivity hubs requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for MAX16984AATJA/V+ 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 automotive, industrial, communications, and healthcare markets with precision power, sensing, and connectivity solutions.
The MAX16984A product line delivers highly integrated automotive USB power management ICs designed specifically for infotainment, telematics, and connectivity systems where space, reliability, and multi-standard charging compatibility are critical.
FAQ
What is the primary function of the MAX16984AATJA/V+ in automotive USB systems?
The MAX16984AATJA/V+ serves as a single-chip solution integrating a 5V/3.0A synchronous step-down DC-DC converter, USB 2.0 host charger adapter emulator (supporting BC1.2, Samsung, Apple, and YD/T 1591-2009), and high-ESD USB protection switches. It replaces discrete buck regulators and USB charge controllers in automotive radio, navigation, and telematics systems - enabling compact, robust, and standards-compliant USB power delivery directly from the vehicle battery.
Does the MAX16984AATJA/V+ support USB 2.0 Hi-Speed (480Mbps) data pass-through?
Yes, the MAX16984AATJA/V+ supports full USB 2.0 Hi-Speed data pass-through with 1GHz on-channel -3dB bandwidth and 4Ω typical on-resistance for both D+ and D− paths. Its dual-switch architecture (DP/DM to HVDP/HVDM) preserves signal integrity while providing ±15kV air/±8kV contact ESD protection - meeting automotive EMC requirements without degrading data rates.
How does the MAX16984AATJA/V+ handle voltage drop in long automotive USB cables?
The MAX16984AATJA/V+ implements remote feedback via the SHIELD pin to dynamically adjust its 5V output between 5V and 7V, compensating for IR drop in captive cables. Using a configurable current-sense amplifier (19.4V/V gain) and external resistor network, it maintains ≥4.75V at the portable device end - ensuring reliable charging and data communication even with 2m+ cable lengths common in center-console or rear-seat installations.
What charging protocols does the MAX16984AATJA/V+ support natively in hardware?
The MAX16984AATJA/V+ includes hardware-accelerated, resistor- or I²C-configurable support for USB Battery Charging Specification 1.2 (BC1.2) Downstream Port (CDP) and Dedicated Charging Port (DCP) modes, Samsung 2.0A, Apple iPod/iPhone/iPad 2.4A, and Chinese Telecommunication Industry Standard YD/T 1591-2009. No external microcontroller or firmware is required for detection or enumeration.
Is the MAX16984AATJA/V+ qualified for automotive temperature and reliability requirements?
Yes, the MAX16984AATJA/V+ is specified for -40°C to +125°C ambient operation and includes overtemperature protection (shutdown at 165°C, warning at 140°C), short-to-battery protection on all power and USB pins, and AEC-Q100 stress testing compliance. Its 32-pin TQFN package with exposed pad ensures thermal performance suitable for under-dash and head-unit mounting locations.
MAX16984AATJA/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- -
- Voltage - Input:
- 4.5V ~ 28V
- Number of Outputs:
- 1
- Voltage - Output:
- 5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (5x5)
MAX16984AATJA/V+ FAQ
1.How can I place an order for MAX16984AATJA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16984AATJA/V+ 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 MAX16984AATJA/V+ reliable?
The price and inventory of MAX16984AATJA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16984AATJA/V+ is usually 5 days.
3.What payment methods are accepted for MAX16984AATJA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16984AATJA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16984AATJA/V+?
MAX16984AATJA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16984AATJA/V+ 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 MAX16984AATJA/V+?
For technical support, including MAX16984AATJA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16984AATJA/V+ requirements.
6.How does Aetrix verify that MAX16984AATJA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16984AATJA/V+ 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 MAX16984AATJA/V+ meets industry standards.
7.What is the process for return or replacement of MAX16984AATJA/V+?
All MAX16984AATJA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16984AATJA/V+, 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 MAX16984AATJA/V+ part is unused and in its original packaging.
Return procedure for MAX16984AATJA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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