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Analog Devices Inc./Maxim Integrated MAX16984RAGI/VY+
- Part No.:
- MAX16984RAGI/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
MAX16984RAGI/VY+.pdf
- Description:
- IC REG CONV USB 1OUT 28QFND
- Quantity:
- Payment:
- Shipping:
Inventory:1,322
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Product details
Overview
The MAX16984RAGI/VY+ from Analog Devices is an automotive-grade integrated step-down DC-DC converter (5V/2.5A), USB host charger emulator, and dual-channel USB 2.0 protection switch with ±15kV IEC 61000-4-2 ESD protection on HVD+/HVD−. It supports USB BC1.2 CDP/DCP modes, YD/T 1591-2009, and dedicated iPod/iPhone (1.0A) and iPad (2.1A) charging detection. It operates from 4.5V to 28V input (42V load dump tolerant) and delivers regulated 5V output for automotive infotainment USB ports.
For engineers reviewing the MAX16984RAGI/VY+ datasheet, MAX16984RAGI/VY+ pinout, MAX16984RAGI/VY+ application, or MAX16984RAGI/VY+ equivalent, key selection considerations include its integrated USB charge emulation logic, resistor-programmable switching frequency (220kHz–2.2MHz), cable-drop compensation via analog feedback adjustment (±25% VOUT range), robust short-to-battery protection on both DC-DC and USB pins, and AEC-Q100 qualification for under-hood environments.
Technical Context
The MAX16984RAGI/VY+ integrates three functional blocks: a synchronous buck converter with internal high-side n-channel MOSFET (RONH = 200–450 mΩ) and low-side switch, a USB 2.0 analog data switch (4Ω RON, 400MHz bandwidth), and a multi-mode charger detection engine supporting BC1.2, YD/T 1591, and proprietary Apple protocols. Its feedback loop uses SENSP as both output voltage sense and current-sense positive input, enabling coordinated voltage regulation and current limiting.
It implements dual protection architectures: overvoltage detection on SENSN, HVD+, and HVD− with programmable blanking (3–30ms), and fault reporting via active-low open-drain FAULT pin. The device supports forced-PWM (via SYNC) and skip mode (SYNC grounded), and includes spread-spectrum operation (6.5% modulation) in the MAX16984S variant-though the RAGI/VY+ suffix indicates standard version without spread spectrum.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V; withstands 42V load dump transients for automotive battery rail resilience |
| Output Voltage | 5.05V typical (±1.5% accuracy); adjustable up to 6.15V via FBPER/FBMAX for USB cable drop compensation |
| Max Output Current | 2.5A continuous at TA ≤ +70°C; derated to 2.1A at +105°C ambient |
| Switching Frequency | 220kHz to 2.2MHz, set by external resistor on FOSC pin; enables noise/efficiency/space trade-offs |
| USB Data Switch RON | 4Ω typical per channel; ensures <1% signal loss at 480Mbps while maintaining USB 2.0 eye diagram integrity |
| ESD Protection | ±15kV air / ±8kV contact (IEC 61000-4-2) on HVD+/HVD−; meets automotive EMC requirements |
| Operating Temp | −40°C to +125°C junction; qualified per AEC-Q100 Grade 2 for under-dash automotive applications |
Pinout & Package
MAX16984RAGI/VY+ is packaged in a 28-pin, 5mm × 5mm TQFN-CU with side-wettable flanks (QFND), optimized for automated optical inspection (AOI) and thermal performance (θJA = 29°C/W). Exposed pad (EP) must be soldered to a large contiguous ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FAULT | Active-low fault indicator | Open-drain output pulled low during overvoltage, overcurrent, or thermal shutdown; requires external 100kΩ pullup to IN |
| SYNC | Frequency synchronization input | Enables forced-PWM when driven high; enables skip mode when grounded or floating |
| FOSC | Frequency programming node | Resistor-to-GND sets switching frequency (e.g., 68kΩ → 440kHz; 12kΩ → 2.2MHz) |
| CD0/CD1 | Charger detection configuration | Binary inputs selecting BC1.2 CDP, DCP, or Apple-specific iPhone/iPad modes |
| HVD+/HVD− | High-voltage protected USB outputs | Direct connection to USB connector pins; integrate ESD clamps and short-to-battery protection |
| SENSP/SENSN | Current-sense and feedback inputs | SENSEP connects to output rail and current-sense resistor high side; SENSN to low side - enables combined voltage regulation and current limiting |
| ENBUCK | Buck converter enable | Logic-level input (2.4V threshold) enabling/disabling DC-DC stage independently of USB functions |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB charge emulation | Eliminates need for discrete BC1.2 controller IC and Apple protocol resistors - reduces BOM count and layout area |
| User-adjustable USB output voltage | Compensates for up to 1.15V IR drop across captive cables using analog feedback scaling (0–25% gain boost) |
| Dual USB data path protection | 4Ω RON switches with <50ps skew and −14dB crosstalk at 480MHz preserve USB 2.0 signal integrity |
| Robust fault management | Independent overvoltage detection on HVD+, HVD−, and SENSN with configurable blanking and FAULT assertion |
| Automotive-ready thermal design | Thermal shutdown at +174°C with 30°C hysteresis; side-wettable QFND package supports IPC-A-610 Class 3 solder joint inspection |
Applications
| Automotive Radio USB Port | Telematics Hub Interface |
|---|---|
Use Scenario: Integrated USB port in head-unit delivering power and data to smartphones for CarPlay/Android Auto. IC Role / Device Role / Timing Role: Provides regulated 5V power, detects connected device type (iPhone/iPad/Android), and protects internal transceiver from ESD and shorts. Use Value: Enables single-chip USB host implementation with guaranteed 2.1A iPad charging and BC1.2 compliance without external detection circuitry. | Use Scenario: Central telematics control unit supplying power and data to GPS modules, cellular modems, and diagnostic dongles. IC Role / Device Role / Timing Role: Acts as USB power manager and physical layer protector, handling load dump transients and hot-plug events. Use Value: Maintains system uptime during vehicle cranking (4.5V min) and prevents damage from accidental short-to-battery on USB connector pins. |
| Dedicated In-Vehicle Charger | Automotive Connectivity Gateway |
Use Scenario: Standalone 12V-to-USB charger mounted in center console or rear seat. IC Role / Device Role / Timing Role: Delivers up to 2.5A at 5V with adaptive voltage boost to compensate for long cable losses. Use Value: Achieves full 2.1A iPad charging even with 330mΩ cable resistance by dynamically raising VOUT up to 6.15V. | Use Scenario: Gateway module connecting infotainment, ADAS, and body control networks via USB-based diagnostics. IC Role / Device Role / Timing Role: Isolates sensitive MCU USB PHY from harsh vehicle bus environment using high-ESD HVD+/HVD− outputs. Use Value: Prevents field failures caused by ±15kV ESD events on exposed USB ports while maintaining 480Mbps data throughput. |
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 |
|---|---|---|---|
| MAX20029ATG/V+ (Analog Devices) | Single-channel 5V/3A buck only; no USB detection or protection switches | Requires external USB charge emulator and ESD protection ICs | Select when USB functionality is handled separately and higher current (3A) is needed |
| TPS65987D (Texas Instruments) | USB-C PD controller with integrated 5V/3A buck; supports USB PD 3.0, not BC1.2 or Apple legacy modes | Designed for USB-C ports, lacks HVD+/HVD− analog switch architecture | Select for next-gen USB-C automotive interfaces requiring programmable power delivery |
Compared with MAX20029ATG/V+ and TPS65987D, the MAX16984RAGI/VY+ uniquely combines BC1.2/YD/T 1591/Apple detection, 4Ω USB 2.0 switches, and 5V/2.5A buck in one AEC-Q100 package - making it optimal for cost-sensitive, legacy USB-A automotive host ports requiring minimal external components.
Availability
MAX16984RAGI/VY+ is available at Aetrix Electronics and suitable for automotive radio, telematics, dedicated USB charging, and connectivity gateway applications requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for MAX16984RAGI/VY+ 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 automotive, industrial, communications, and consumer markets.
The MAX16984RAGI/VY+ belongs to Analog Devices' automotive power management product line, designed specifically for robust, integrated USB power delivery in harsh vehicle environments - emphasizing ESD resilience, load dump tolerance, and seamless legacy device compatibility.
FAQ
What is the maximum continuous output current capability of the MAX16984RAGI/VY+ at 105°C ambient temperature?
The MAX16984RAGI/VY+ delivers up to 2.1A of continuous output current at +105°C ambient temperature, as specified in the Electrical Characteristics table under "Converter Output Current." This rating accounts for thermal derating in high-temperature automotive environments and assumes proper PCB copper area and airflow per the thermal design guidelines in the datasheet.
Does the MAX16984RAGI/VY+ support USB On-The-Go (OTG) functionality?
Yes, the MAX16984RAGI/VY+ is explicitly stated to be compatible with the USB On-The-Go Specification. Its integrated USB 2.0 analog switches (D+/D− to HVD+/HVD−) and bidirectional data path support OTG negotiation, enabling the host system to act as either a host or peripheral depending on VBUS detection and ID pin signaling implemented externally.
How does the MAX16984RAGI/VY+ implement cable-drop compensation for USB charging?
The MAX16984RAGI/VY+ implements cable-drop compensation using its analog feedback adjustment circuit: SENSP serves as the main output voltage sense point, while FBPER and FBMAX configure a transconductance amplifier that injects adjustable gain (0.535–1.069 V/V) into the feedback loop. This raises the effective output voltage up to 6.15V to offset IR losses in long captive cables, ensuring ≥5V reaches the connected device.
What protection features does the MAX16984RAGI/VY+ provide against short-to-battery faults?
The MAX16984RAGI/VY+ provides short-to-battery protection on both the DC-DC converter (SUPSW and LX pins) and USB interface (HVD+ and HVD− pins). Each protected node includes dedicated overvoltage comparators with blanking timers (e.g., 18–30ms for HVD±), and fault conditions assert the open-drain FAULT pin. Internal clamps limit voltage stress and prevent latch-up during sustained 12V/24V shorts.
Is the MAX16984RAGI/VY+ pin-compatible with other variants in the MAX16984 family, such as MAX16984SACIL?
No, the MAX16984RAGI/VY+ is not pin-compatible with the MAX16984SACIL. While both share identical pinout and package (28-pin TQFN-CU/QFND), the MAX16984SACIL integrates a spread-spectrum oscillator for EMI reduction - a feature absent in the MAX16984RAGI/VY+. Functionally identical operation is maintained, but EMI-sensitive designs requiring spread spectrum must use the 'S' variant.
MAX16984RAGI/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Converter, USB
- Voltage - Input:
- 4.5V ~ 28V
- Number of Outputs:
- 1
- Voltage - Output:
- 5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 28-QFND (5x5)
MAX16984RAGI/VY+ FAQ
1.How can I place an order for MAX16984RAGI/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16984RAGI/VY+ 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 MAX16984RAGI/VY+ reliable?
The price and inventory of MAX16984RAGI/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16984RAGI/VY+ is usually 5 days.
3.What payment methods are accepted for MAX16984RAGI/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16984RAGI/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16984RAGI/VY+?
MAX16984RAGI/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16984RAGI/VY+ 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 MAX16984RAGI/VY+?
For technical support, including MAX16984RAGI/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16984RAGI/VY+ requirements.
6.How does Aetrix verify that MAX16984RAGI/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX16984RAGI/VY+ 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 MAX16984RAGI/VY+ meets industry standards.
7.What is the process for return or replacement of MAX16984RAGI/VY+?
All MAX16984RAGI/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16984RAGI/VY+, 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 MAX16984RAGI/VY+ part is unused and in its original packaging.
Return procedure for MAX16984RAGI/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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