Analog Devices Inc./Maxim Integrated MAX16984RAGI/VY+T

Overview

The MAX16984RAGI/VY+T from Analog Devices is an automotive-grade power management IC integrating a 5V/2.1A synchronous step-down DC-DC converter, USB 2.0 data switches with ±15kV IEC 61000-4-2 ESD protection on HVD+/HVD−, and a USB host charger emulator supporting BC1.2 CDP/DCP, YD/T 1591-2009, and dedicated iPod/iPhone (1.0A) and iPad (2.1A) charging modes. It operates from 4.5V to 28V input (42V load dump tolerant) and targets automotive radio, navigation, and telematics USB host ports.

For engineers reviewing the MAX16984RAGI/VY+T datasheet, MAX16984RAGI/VY+T pinout, MAX16984RAGI/VY+T application, or MAX16984RAGI/VY+T equivalent, key selection considerations include its integrated USB voltage compensation (5.0V–6.15V adjustable), dual-mode current limiting (fixed internal + user-configurable external), 220kHz–2.2MHz resistor-programmable switching frequency, -40°C to +125°C operation, and side-wettable 28-pin QFND package for automotive AEC-Q100 reliability.

Technical Context

The MAX16984RAGI/VY+T implements a high-efficiency synchronous buck topology with internal high-side n-channel MOSFET (RONH = 200–450 mΩ) and low-side n-channel switch enabling forced-PWM or skip mode operation. Its USB analog switches feature 4Ω on-resistance, 400MHz -3dB bandwidth, and <50ps output skew between D+/D− paths to preserve USB 2.0 480Mbps signal integrity.

USB charge detection uses dedicated comparator thresholds (e.g., VDM1F = 45–47% of VBIAS for iPhone mode) and programmable debounce timers (tDM1 = 4–15ms) to reliably identify BC1.2 and proprietary Apple charging signatures. Overvoltage protection on SENSN, HVD+, and HVD− employs fast-response comparators with blanking timeouts (tB,OV_SENSN = 3–20ms) and fault-indication via open-drain FAULT pin.

Key Specifications

Pinout & Package

MAX16984RAGI/VY+T is housed in a 28-pin, 5mm × 5mm side-wettable QFND package with exposed pad (EP) for thermal dissipation. Pin 1 is FAULT; pin 28 is ENBUCK; EP must be connected to a large-area GND plane but not used as sole ground connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive USB power management applications.

Compared with MAX20419ATPA/VY+ and TPS65988DHAR, the MAX16984RAGI/VY+T uniquely integrates automotive-qualified USB 2.0 data switching, Apple charge detection, and ±25kV ISO 10605 ESD protection in one package - eliminating four to six discrete components while ensuring compliance with stringent vehicle EMC and safety standards.

Availability

MAX16984RAGI/VY+T is available at Aetrix Electronics and suitable for automotive radio, telematics control units, and navigation systems requiring stable component supply with AEC-Q100-aligned qualification and long-term production continuity.

Supply support for MAX16984RAGI/VY+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 automotive, industrial, communications, and consumer markets with precision power, interface, and sensing solutions.

The MAX16984RAGI/VY+T belongs to Analog Devices' automotive power management portfolio, designed specifically to consolidate USB host power delivery, protection, and intelligent charging into a single AEC-Q100-qualified IC for infotainment and connectivity modules.

FAQ

What is the maximum continuous output current capability of the MAX16984RAGI/VY+T DC-DC converter?

The MAX16984RAGI/VY+T delivers up to 2.1A of continuous output current at 105°C ambient temperature. Its internal high-side MOSFET has a typical on-resistance of 200–450 mΩ, and the peak inductor current limit is programmable from 2.7A to 4.7A, ensuring robust performance under transient loads and startup conditions.

Does the MAX16984RAGI/VY+T support Apple device charging identification?

Yes, the MAX16984RAGI/VY+T natively supports iPod/iPhone 1.0A and iPad 2.1A dedicated charging modes through hardware-based detection using HVD+/HVD− comparator thresholds and configurable CD0/CD1 pins. It does not require firmware or external microcontrollers to identify and respond to Apple charging signatures.

What package type and thermal characteristics does the MAX16984RAGI/VY+T use?

The MAX16984RAGI/VY+T is supplied in a 28-pin, 5mm × 5mm side-wettable QFND package with exposed pad (EP). Its junction-to-ambient thermal resistance (θ_JA) is 30°C/W, and junction-to-case (θ_JC) is 2°C/W, enabling efficient heat transfer to PCB copper when EP is properly soldered to a large GND plane.

How does the MAX16984RAGI/VY+T compensate for USB cable voltage drop?

The MAX16984RAGI/VY+T compensates for cable voltage drop using its analog feedback adjustment circuit. By configuring FBPER and FBMAX, the output voltage can be increased up to 6.15V (vs. nominal 5.05V), offsetting IR losses in captive cables - verified to maintain ≥5.0V at the connected device under 2.1A load and 330mΩ cable resistance.

What level of ESD protection does the MAX16984RAGI/VY+T provide on its HVD+ and HVD− pins?

The MAX16984RAGI/VY+T provides ±25kV air-gap and ±8kV contact ESD protection on HVD+/HVD− per ISO 10605, plus ±15kV air-gap and ±8kV contact per IEC 61000-4-2, and ±15kV air-gap / ±8kV contact under the 330Ω/330pF model. This exceeds standard automotive requirements and protects against common in-vehicle ESD events.