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

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.

Applications

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

* 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