MAX20481
Four- to Seven-Input Automotive Power-System Monitor Family
Industry's Only Auto-Qualified, ASIL-B Power-System Monitor with Windowed Watchdog
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Key Features
Applications/Uses
| 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 |
Simplified Block Diagram
Technical Docs
| Data Sheet | Four- to Seven-Input Automotive Power-System Monitor Family | Jan 28, 2022 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
| 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.
Technical Docs
| Data Sheet | Four- to Seven-Input Automotive Power-System Monitor Family | Jan 28, 2022 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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