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Automotive Hi-Speed USB 2.0 Protectors

Industry-Leading Overvoltage and ESD Protection for Automotive USB

产品详情

The MAX20042F, MAX20043F, and MAX20044F devices provide high ESD and short-circuit protection for the low-voltage internal USB data and USB power line in automotive radio, navigation, connectivity, and USB hub applications. The devices support USB Hi-Speed (480Mbps), USB full-speed (12Mbps), and USB low-speed (1.5Mbps) operation, as well as USB on-the-go (OTG) functionality.

The short-circuit protection features include short-to-battery on the protected HVBUS, HVD+, and HVD- outputs, as well as short-to-HVBUS on the protected HVD+ and HVD- outputs. The devices are capable of a short-to-battery condition of up to +18V. Short-to-GND protection and overcurrent protection are also provided on the protected HVBUS output to protect the internal BUS power rail from an overcurrent fault.

The devices feature high ESD protection to ±15kV Air Gap and ±8kV Contact on the protected HVBUS, HVD+, and HVD- outputs.

The devices feature a low on-resistance (RON), 90mΩ (max) USB power switch, and two low on-resistance (RON), 4Ω (typ) USB 2.0 data switches. These devices also feature an enable input, a fault output, a 10ms fault-recovery time, a 1ms overcurrent blanking time, and an integrated overcurrent autoretry.

The MAX20042F, MAX20043F, and MAX20044F are available in a lead-free, 16-pin QSOP package and operate over the -40°C to +105°C temperature range.

主要特征

  • Accurate Bus Current Limiting with Minimal Voltage Drop
    • Low RON 90mΩ (max) USB Power Switch
    • 0.65A (typ), MAX20042F
    • 1.0A (typ), MAX20043F
    • 1.3A (typ), MAX20044F
  • Targeted Features for Optimized USB Performance
    • Two RON 4Ω (typ) USB 2.0 Data Switches
    • 480Mbps or 12Mbps USB 2.0 Operation
    • 10ms Fault-Recovery Time
    • 1ms Overcurrent Blanking Time
    • 5.67V (typ) Fixed HVBUS Protection Trip Threshold
  • Robust for the Automotive Environment
    • Short-to-Battery and Short-to-GND Protection on Protected HVBUS Output
    • Short-to-Battery and Short-to-BUS Protection on Protected HVD+ and HVD- Outputs
    • Tested to ISO 10605 and IEC 61000-4-2 ESD Standards
    • 16-Pin (3.90mm × 4.94mm) QSOP Package
    • -40°C to +105°C Operating Temperature Range
    • AEC-Q100 Qualified

应用/用途

  • 汽车USB保护
Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 1000
Current Limit (mA) (max) 1000
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 12.5
Current Limit Set By Preset
Lowest Adj. Setting (A) 0.65
RON (Ω) (typ) 0.051
VSUPPLY (V) (min) 4.75
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +105
Package/Pins QSOP-CU/16
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简化框图

MAX20042F, MAX20043F, MAX20044F: Typical Operating Circuit MAX20042F, MAX20043F, MAX20044F: Typical Operating Circuit Zoom icon

技术文档

数据资料 Automotive Hi-Speed USB 2.0 Protectors Oct 23, 2019

设计与质量

单击下面的标题以查看详情页面

描述

The MAX20044F evaluation kit (EV kit) circuit demonstrates the MAX20044F automotive USB protector switch IC, featuring overvoltage protection (OVP), electrostatic discharge (ESD) protection, and undervoltage lockout (UVLO)/overcurrent protection (OCP) for automotive USB applications.

The IC protects the USB BUS, D+, and D- data lines from overvoltage conditions, such as a short-to-battery and ESD events. UVLO protects the BUS against low-voltage conditions such as a short-to-ground. The BUS OCP uses a blanking period allowing momentary BUS shorts to be ignored. All faults can be monitored using the active-low FAULT output signal.

The IC can pass high-speed USB differential (D+ and D-) signals up to 480Mbps and has a low 90mΩ RON(MAX) for the BUS and a 4Ω RON(TYP) for the D+ and D- lines. The EV kit is powered by the USB BUS. An onboard MAX15007A automotive regulator provides the IN reference voltage. The MAX20044F EV kit can also evaluate the MAX20042F and MAX20043F after IC replacement of U1.

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特征

  • Protects USB BUS, D+, and D- Signals from Overvoltages Up to 18V and ESD Events
  • USB BUS Undervoltage Lockout
  • 1.3A (typ) USB BUS Overcurrent-Protection Threshold
  • 1ms Overcurrent Blanking Time
  • Passes 480Mbps USB Data Signals
  • Low On-Resistance
    • BUS: 0.14mΩ (max)
    • D+ and D-: 4Ω (typ)
  • Active-Low FAULT Output Signal
  • USB Powered
  • Fully Assembled and Tested
  • Evaluates the MAX20042F, MAX20043F, and MAX20044F ICs in a 16-Pin QSOP Package

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参量

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 1000
Current Limit (mA) (max) 1000
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 12.5
Current Limit Set By Preset
Lowest Adj. Setting (A) 0.65
RON (Ω) (typ) 0.051
VSUPPLY (V) (min) 4.75
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +105
Package/Pins QSOP-CU/16

主要特征

  • Accurate Bus Current Limiting with Minimal Voltage Drop
    • Low RON 90mΩ (max) USB Power Switch
    • 0.65A (typ), MAX20042F
    • 1.0A (typ), MAX20043F
    • 1.3A (typ), MAX20044F
  • Targeted Features for Optimized USB Performance
    • Two RON 4Ω (typ) USB 2.0 Data Switches
    • 480Mbps or 12Mbps USB 2.0 Operation
    • 10ms Fault-Recovery Time
    • 1ms Overcurrent Blanking Time
    • 5.67V (typ) Fixed HVBUS Protection Trip Threshold
  • Robust for the Automotive Environment
    • Short-to-Battery and Short-to-GND Protection on Protected HVBUS Output
    • Short-to-Battery and Short-to-BUS Protection on Protected HVD+ and HVD- Outputs
    • Tested to ISO 10605 and IEC 61000-4-2 ESD Standards
    • 16-Pin (3.90mm × 4.94mm) QSOP Package
    • -40°C to +105°C Operating Temperature Range
    • AEC-Q100 Qualified

应用/用途

  • 汽车USB保护

描述

The MAX20042F, MAX20043F, and MAX20044F devices provide high ESD and short-circuit protection for the low-voltage internal USB data and USB power line in automotive radio, navigation, connectivity, and USB hub applications. The devices support USB Hi-Speed (480Mbps), USB full-speed (12Mbps), and USB low-speed (1.5Mbps) operation, as well as USB on-the-go (OTG) functionality.

The short-circuit protection features include short-to-battery on the protected HVBUS, HVD+, and HVD- outputs, as well as short-to-HVBUS on the protected HVD+ and HVD- outputs. The devices are capable of a short-to-battery condition of up to +18V. Short-to-GND protection and overcurrent protection are also provided on the protected HVBUS output to protect the internal BUS power rail from an overcurrent fault.

The devices feature high ESD protection to ±15kV Air Gap and ±8kV Contact on the protected HVBUS, HVD+, and HVD- outputs.

The devices feature a low on-resistance (RON), 90mΩ (max) USB power switch, and two low on-resistance (RON), 4Ω (typ) USB 2.0 data switches. These devices also feature an enable input, a fault output, a 10ms fault-recovery time, a 1ms overcurrent blanking time, and an integrated overcurrent autoretry.

The MAX20042F, MAX20043F, and MAX20044F are available in a lead-free, 16-pin QSOP package and operate over the -40°C to +105°C temperature range.

简化框图

MAX20042F, MAX20043F, MAX20044F: Typical Operating Circuit MAX20042F, MAX20043F, MAX20044F: Typical Operating Circuit Zoom icon

技术文档

数据资料 Automotive Hi-Speed USB 2.0 Protectors Oct 23, 2019

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心