Analog Devices MAX20461A Product Info

• One-Chip Type-C Solution Directly from Car Battery to Portable Device
  • MAX20461: USB Type-C Compliant DFP Controller with V_CONN Protection
  • MAX20461A: USB Type-C Compliant DFP Controller
  • 1GHz Bandwidth USB 2.0 Data Switches
  • 4.5V to 28V Input (40V Load Dump), Synchronous Buck Converter
  • 5V to 7V, 3A Output Capability
• Optimal USB Charging and Communication for Portable Devices
  • User-Programmable Voltage Gain Adjusts Output for Up to 474mΩ Cable Resistance
  • User-Programmable USB Current Limit
  • Type-C Cable Orientation Indicator for USB3 Applications
  • Supports USB BC1.2 CDP and SDP Modes
  • Compatible with USB On-the-Go Specification and Apple CarPlay^®
• Low-Noise Features Prevent Interference with AM Band and Portable Devices
  • Fixed-Frequency 310kHz to 2.2MHz Operation
  • Fixed-PWM Option at No Load
  • Spread Spectrum for EMI Reduction
  • SYNC Input/Output for Frequency Parking
• Robust Design Keeps Vehicle System and Portable Device Safe in an Automotive Environment
  • Short-to-Battery Protection on V_BUS, HVD± Pins
  • CC1 and CC2 Tolerant to 20V Transients
  • Advanced Diagnostics Through I²C Bus
  • ±25kV Air/±8kV Contact ISO 10605 (330pF, 2kΩ)*
  • ±15kV Air/±8kV Contact IEC 61000-4-2 (150pF, 330Ω)*
  • ±15kV Air/±8kV Contact (330pF, 330Ω)*
  • Overtemperature Protection, Warning, and Intelligent Current Foldback
  • -40°C to +125°C Operating Temperature Range

The MAX20461 combines a 3A high-efficiency, automotive-grade, step-down converter, a USB Type-C/BC1.2 host charger emulator, and high-bandwidth USB protection switches for automotive USB 2.0 host applications. The device also includes a USB load current-sense amplifier and a configurable feedback-adjustment circuit that provides automatic USB voltage compensation for voltage drops in captive cables often found in automotive applications. The device limits the USB load current using both a fixed internal peak-current threshold and a user-configurable external current-sense USB load threshold.

The MAX20461 is optimized for high-frequency operation and includes programmable frequency selection from 310kHz to 2.2MHz, allowing optimization of efficiency, noise, and board space based on the 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.

The MAX20461 allows flexible configuration and advanced diagnostic options for both stand-alone and supervised applications. The device can be programmed using either external programming resistors and/or internal I²C registers through the I²C bus.

The MAX20461 is available in a small, 5mm x 5mm 32-pin TQFN package. It is designed to minimize required external components and layout area.

Applications

• Automotive Connectivity/Telematics
• Automotive Radio and Navigation
• USB Port for Host and Hub Applications