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

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

  • 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
MAX16984A
Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emulator
MAX16984A: Simplified Block Diagram
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Evaluation Kits

MAX16984AEVKIT

Evaluation Kit for the MAX16984A

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

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

MAX16984AEVKIT
Evaluation Kit for the MAX16984A

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