Maxim Integrated MAX20481 Automotive Power System Monitor

Maxim Integrated MAX20481 Automotive Power System Monitor

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Maxim Integrated MAX20481 Automotive Power System Monitor is a complete ASIL-compliant power system SoC (System-on-a-Chip) with up to seven voltage monitor inputs. Each input has programmable OV/UV thresholds of between 2.5% and 10% with ±1% accuracy. Two of the inputs have a separate remote ground-sense input for use with high-current SoC supplies.

The MAX20481 contains a factory-programmable windowed watchdog with digital input pins for both refreshing and disabling the watchdog. The active-low RESET pin of the device can be set at the factory to assert under a variety of conditions.

The MAX20481 significantly reduces system size and component count while improving reliability compared to separate ICs or discrete components. The MAX20481 meets ASIL B reliability levels in a standalone application. The device is designed to operate from -40°C to +125°C ambient temperature.

The Maxim Integrated MAX20481 Power System Monitor is offered in a side-wettable TQFN16 package with an exposed pad for enhanced thermal performance. This device is AEC-Q100 qualified for use in automotive applications.

Features

  • AEC-Q100 qualified
  • ASIL-D compliant
  • 2.35V to 5.50V operating supply voltage
  • No external components required
  • 150μA operating current
  • Selectable 102.5% to 110% OV monitors
  • Selectable 97.5% to 90% UV monitors
  • ±1% accuracy
  • 0.5% step size
  • Five fixed-voltage monitoring inputs
  • Two differential DVS tracking-voltage monitoring Inputs with remote-ground sense
  • Windowed Watchdog with Disable pin for SoC programming
  • Error-Correcting Code (ECC) on internal OTP
  • Factory-programmable active-low RESET pin
  • -40°C to +125°C operating temperature
  • 3.0mm x 3.0mm side-wettable TQFN16 package with exposed pad

Application Circuit

more information: https://www.maximintegrated.com/en/products/power/supervisors-voltage-monitors-sequencers/MAX20481.html

About mixos

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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