MAX16984A

PRODUCTION

Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emulator

Industry's Only 3.0 Amp, 1GHz Automotive USB Charger that Allows Sandalone Firmware Update

Data Sheet (Rev. 5)

Product Selection Table

Part Models: 10
1ku List Price: Starting From $2.96

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Overview

Integrated DC-DC and USB Host Charge Emulator Enables 1-Chip Solution Directly from Car Battery to Portable Device

4.5V to 28V (42V Load Dump) Operating Voltage
5V, 3.0A Output Current Capability
Low-Q Current Skip and Shutdown Modes
Soft-Start Reduces Inrush Current

Low-Noise Features Prevent Interference with AM Band and Portable Devices

Fixed-Frequency 220kHz to 2.2MHz Operation
Forced-PWM Option at No Load
Spread Spectrum for EMI Reduction
SYNC Input for Frequency Parking

Optimal USB Power and Communication for Portable Devices

User-Adjustable Voltage Gain Adjusts Output Between 5V and 7V for Cable Compensation
±5% Accuracy User-Adjustable USB Current Limit
4Ω USB 2.0 1GHz Data Switches
Integrated Samsung/iPod/iPhone/iPad Charge Detection Termination Resistors
Supports USB BC1.2 Charging Downstream Port(CDP) and Dedicated Charging Port (DCP) Modes
Supports Chinese Telecommunication Industry Standard YD/T 1591-2009
Compatible with USB On-the-Go Specification
High-Speed Pass-Through Mode

Robust Design Keeps Vehicle System and Portable Devices Safe in Automotive Environment

Short-to-Battery Protection on DC-DC Converter
Short-to-Battery Protection on USB Pins
±15kV Air/±8kV Contact ISO 10605
±15kV Air/±8kV Contact IEC 61000-4-2
±15kV Air/±8kV Contact (330Ω, 330pF)
Advanced Diagnostics Through I²C Bus
Reduced Inrush Current with Soft-Start
Over-temperature Protection
-40°C to +125°C Operating Temperature Range
32-Pin, 5mm x 5mm, TQFN Package

The MAX16984A combines a 5V automotive-grade step-down converter capable of driving up to 3.0A, a USB host charger adapter emulator, and 1 GHz USB protection switches for automotive USB host applications. The USB protection switches provide high-ESD, short-circuit protection and feature integrated host-charger port-detection circuitry adhering to the USB 2.0 Battery Charging Specification BC1.2 battery charging specification and Chinese Telecommunication Industry Standard YD/T 1591-2009. They also include circuitry for iPod^® /iPhone^® 1.0A and iPad^® 2.4A dedicated charging modes. The HVD+ and HVD- ESD protection features include protection to ±15kV Air/±8kV Contact on the HVD+ and HVD- outputs to the IEC 61000-4-2 model and 330Ω, 330pF ESD model.

The high-efficiency step-down DC-DC converter operates from a voltage up to 28V and is protected from load dump transients up to 40V. The device is optimized for high-frequency operation and includes I²C or resistor-programmable frequency selection from 310kHz to 2.2MHz to allow optimization of efficiency, noise, and board space based on application requirements. The fully synchronous DC-DC converter integrates high-side and low-side MOSFETs with an external SYNC input/output, and can be configured for spread-spectrum operation. Skip mode is available in light/no-load conditions to minimize quiescent current. The converter can deliver up to 3A of continuous current at +105°C. The MAX16984A has an integrated spread-spectrum oscillator to improve EMI performance

The MAX16984A also includes a USB load current-sense amplifier and configurable feedback adjustment circuit designed to provide automatic USB voltage adjustment to compensate for voltage drops in captive cables associated with automotive applications. The MAX16984A limits the USB load current using both a fixed internal peak current threshold of the DC-DC converter and a user-configurable external USB load current-sense amplifier threshold.

Applications

Automotive Connectivity
Automotive Radio and Navigation
Dedicated USB Power Charger
Telematics
USB Port for Host and Hub Applications

Part Models: 10
1ku List Price: Starting From $2.96

Documentation

Data Sheet 1

MAX16984A: Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emulator Data Sheet (Rev.5) 11/04/2024
- Open Interactive Page

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX16984AATJA/V+	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJA/V+T	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJB/V+	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJB/V+T	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJC/V+	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJC/V+T	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJN/V+	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJN/V+T	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJN/VY+	32-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16984AATJN/VY+T	32-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 25, 2022 - 2254 WAFER FAB
		pcn_2254
MAX16984AATJA/V+	PRODUCTION
MAX16984AATJA/V+T	PRODUCTION
MAX16984AATJB/V+	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX16984A

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Features and Benefits

Configurable Charge Detection Modes
- USB-IF BC1.2 CDP, DCP
- Apple 2.4A
- Samsung 2.0A
- China YD/T 1591-2009 Charging Specification
Automatic USB Voltage Adjustment by Integrated DC-DC Converter (310kHz - 2.2MHz)
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX16984A evaluation kit (EV kit) demonstrates the MAX16984A automotive high-current, high-efficiency, step-down DC-DC converter with integrated USB Type-A controller. In addition, the device also includes 1GHz bandwidth USB 2.0 D+/D- protection switches which pro- vide ESD and short-to-battery protection for low-voltage transceivers.

The MAX16984A features integrated host-charger port- detection circuitry adhering to the USB 2.0 specification, the USB-IF BC1.2 battery charging specification, Apple iPod/iPhone/iPad^® and Samsung^®charge-detection termination resistors, and Chinese Telecommunication Industry Standard YD/T 1591-2009. The MAX16984A integrates high-side current sensing and voltage adjustment circuitry to provide automatic USB voltage adjustment to compensate for voltage drops in captive cables associated with automotive applications. The MAX16984A step-down, synchronous, DC-DC con- verter operates from a voltage of up to 28V continuous and protects against load dump transients up to 40V. The converter is programmable for frequencies from 310kHz to 2.2MHz and can deliver 3A continuously.

The EV kit is populated with a MAX16984AATJB/V+ con- figured for 2.2MHz operation. The data switches of the MAX16984A generally do not require far-eye tuning; the EV kit is populated with shorts.

Applications