Analog Devices Inc./Maxim Integrated MAX16984SATI/V+

Overview

The MAX16984SATI/V+ from Analog Devices is an automotive-grade integrated power management IC combining 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 adapter emulator compliant with BC1.2 and YD/T 1591-2009. It operates from 4.5V to 28V (with 42V load dump tolerance), features resistor-programmable switching frequency (220kHz–2.2MHz), and delivers regulated 5V output for USB host ports in infotainment systems.

For engineers reviewing the MAX16984SATI/V+ datasheet, MAX16984SATI/V+ pinout, MAX16984SATI/V+ application, or MAX16984SATI/V+ equivalent, key selection considerations include its integrated USB charge detection (iPod/iPhone 1.0A, iPad 2.1A), cable-drop compensation via analog feedback adjustment (±25% V_OUT range), fault-indication open-drain output, and side-wettable 28-pin QFND package optimized for automotive thermal and reliability requirements.

Technical Context

The device integrates three functional blocks: a high-efficiency buck converter with internal high-side n-channel MOSFET (R_ONH = 450mΩ max), low-side n-channel switch for fixed-frequency operation, and Schottky rectification; dual 4Ω USB 2.0 analog switches (D+/D− ↔ HVD+/HVD−) supporting 480Mbps data rates with <50ps output skew; and a multi-mode USB charger emulator with dedicated termination resistors and comparator-based detection for BC1.2 CDP/DCP, YD/T 1591, and Apple-specific charging protocols.

Protection architecture includes short-to-battery on both DC-DC and USB pins, overvoltage detection on SENSN/HVD+/HVD− with blanking timeouts (3–30ms), ±25kV ISO 10605 ESD on HVD pins, and thermal shutdown at +174°C with 30°C hysteresis. The spread-spectrum oscillator (MAX16984S variant) reduces EMI, while SYNC input enables frequency parking for noise-sensitive AM-band applications.

Key Specifications

Pinout & Package

MAX16984SATI/V+ is housed in a 28-pin, 5mm × 5mm side-wettable QFND package with exposed pad (EP) for enhanced thermal dissipation. Thermal resistance θ_JA = 30°C/W enables stable operation at full load in compact automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX20419ATGB/V+ and TPS65988DHAR, the MAX16984SATI/V+ uniquely integrates USB 2.0 analog switching, BC1.2/YD/T 1591/iPhone/iPad charge emulation, and 5V/2.1A buck conversion in one AEC-Q100-qualified package-enabling single-chip USB-A host power solutions where legacy compatibility and space constraints are critical.

Availability

MAX16984SATI/V+ is available at Aetrix Electronics and suitable for automotive infotainment head units, telematics control units, and dedicated USB charging modules requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.

Supply support for MAX16984SATI/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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and consumer markets.

The MAX16984SATI/V+ belongs to Analog Devices' automotive power management product line, designed specifically to consolidate USB host power delivery, data protection, and intelligent charging into a single AEC-Q100-qualified IC for infotainment and connectivity systems.

FAQ

What is the maximum continuous output current capability of the MAX16984SATI/V+ at +105°C?

The MAX16984SATI/V+ delivers up to 2.1A of continuous output current at +105°C ambient temperature. This rating is validated under worst-case conditions including 14V input, 5V output, and proper thermal layout with the side-wettable QFND package mounted on a 4-layer PCB with adequate copper pour. Derating applies above +105°C per the thermal characteristics table in the datasheet.

Does the MAX16984SATI/V+ support Apple-specific charging protocols like iPhone 1.0A and iPad 2.1A?

Yes, the MAX16984SATI/V+ includes integrated circuitry for iPod®/iPhone® 1.0A and iPad® 2.1A dedicated charging modes. It implements the required voltage-divider termination on HVD+/HVD− pins and uses internal comparators with precise thresholds (e.g., 46% ±1% of V_BIAS for iPhone DP rising) to detect and configure these modes automatically without MCU involvement.

How does the MAX16984SATI/V+ compensate for voltage drop across long USB cables in automotive applications?

The MAX16984SATI/V+ compensates for cable voltage drop using its analog feedback adjustment feature. By configuring FBPER and FBMAX pins, the output voltage can be increased up to +25% relative to SENSP (i.e., up to 6.15V), ensuring ≥4.75V is maintained at the end of a 330mΩ captive cable under 2.1A load-verified in typical operating characteristic Figure 11.

What ESD protection levels does the MAX16984SATI/V+ provide on its HVD+ and HVD− pins?

The MAX16984SATI/V+ provides ±25kV air-gap and ±8kV contact discharge ESD protection on HVD+/HVD− pins per ISO 10605, plus ±15kV air-gap and ±8kV contact per IEC 61000-4-2, and matching performance under the 330Ω/330pF ESD model. These ratings are measured and guaranteed-not just design targets-and apply across the full −40°C to +125°C operating range.

Can the MAX16984SATI/V+ operate in forced-PWM mode, and how is it enabled?

Yes, the MAX16984SATI/V+ supports forced-PWM (FPWM) mode to eliminate audible noise and ensure constant switching frequency under light loads. FPWM is enabled by driving the SYNC pin high (≥1.4V) with an external clock or logic signal; when SYNC is grounded or left floating, the device defaults to skip mode for improved light-load efficiency.