Dual/Quad Camera Power Protector

 

Part Number	Replacement	Explanation

Description

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The MAX20086–MAX20089 dual/quad camera power protector ICs deliver up to 600mA load current to each of their four output channels. Each output is individually protected from short-to-battery, short-to-ground, and overcurrent conditions. The ICs operate from a 3V to 5.5V supply and with a 3V to 15V camera supply. The input-to-output voltage drop is only 110mV (typ) at 300mA.

The ICs provide an enable input and I²C interface to read the diagnostic status of the device. An on-board ADC enables reading of the current through each switch. The ASIL B- and ASIL D-compliant versions include support for reading an additional seven diagnostic measurements through the ADC, ensuring high-fault coverage.

The MAX20086–MAX20089 include overtemperature shutdown and overcurrent limiting on each output channel separately. All devices are designed to operate from -40°C to +125°C ambient temperature.

Design Solution: Provide a Safe Power Path from the Car Battery to Remote Cameras ›

MAX20086, MAX20087, MAX20088, MAX20089: Typical Operating Circuit Enlarge+

Key Features

• Small Solution
  • Up to Four 600mA Protection Switches
  • 3V to 15V Input Supply 3V to 5.5V Device Supply
  • 26V Short-to-Battery Isolation
  • Adjustable Current Limit (100mA to 600mA)
  • Selectable I²C Addresses
  • Small (4mm × 4mm) 20-Pin SW TQFN Package
• Precision
  • ±8% Current-Limit Accuracy
  • 0.5ms Soft-Start
  • 0.25ms Soft-Shutdown
  • 0.3µA Shutdown Current
  • 110mV Drop at 300mA
• Designed for Safety Applications
  • ASIL B/D Compliant
  • Short to V_BAT/GND Diagnostics
  • Differential Output Over/Undervoltage Diagnostics
  • Input Over/Undervoltage Diagnostics
  • Individual 8-Bit Current, Output Voltage, and Supply Readings Over I²C
  • Autoretry on Fault
• AEC-Q100, -40°C to +125°C

Applications/Uses

• Power-over-Coax for Radar and Camera Modules
• Surround-View Camera ECU