Top

Four- to Seven-Input Automotive Power-System Monitor Family

Industry's Only Auto-Qualified, ASIL-B Power-System Monitor with Windowed Watchdog

Product Details

Key Features

Parametric specs for Supervisors (4 Monitored Voltages)
Reset Out Open Drain
tRESET (min) Adjustable
Watchdog Feature Input (WDI)
Supervisor Features Overvoltage/Window Monitor
Package/Pins TQFN/16
Budgetary
Price (See Notes)
1.5
View Less

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Parameters

Parametric specs for Supervisors (4 Monitored Voltages)
Reset Out Open Drain
tRESET (min) Adjustable
Watchdog Feature Input (WDI)
Supervisor Features Overvoltage/Window Monitor
Package/Pins TQFN/16
Budgetary
Price (See Notes)
1.5

Key Features

  • Small Solution
    • 2.35V to 5.50V Operating Supply Voltage
    • No External Component Required
    • 150µA Operating Current
  • High Precision
    • Selectable 102.5% to 110% OV Monitors
    • Selectable 97.5% to 90% UV Monitors
    • ±1% Accuracy
    • 0.5% Step Size
    • ASIL B Compliance
  • Highly Integrated
    • 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
  • 16-Pin Side-Wettable TQFN with Exposed Pad (3mm x 3mm)
  • AEC-Q100 Qualified
  • -40°C to +125°C Operating Temperature

Applications/Uses

  • Automotive ADAS Systems
  • Autonomous Driving Processing Systems
  • Power System Supervision and MCU/SoC Montioring
  • Remote Sensor Modules

Description

The MAX20481 is a complete ASIL-compliant SoC power system monitor with up to seven voltage-monitor inputs. Each input has factory OTP 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.

Simplified Block Diagram

MAX20481: Simplified Block Diagram MAX20481: Simplified Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .