Three- to Five-Input Power-System Monitor with Clock Monitor and Watchdog

The MAX20484 is a complete ASIL D compliant SoC power system monitor with up to five voltage monitor inputs. Each input has programmable OV/UV thresholds of between 2.5% and 10% with ±0.8% accuracy.

The MAX20484 contains a programmable flexible power sequence recorder (FPSR). This recorder stores power-up and power-down timestamps separately, and supports on/off and sleep/standby power sequences. The MAX20484 also contains a programmable challenge/response watchdog, which is accessible through the I2C interface, and an external clock/fault monitor along with two configurable active-low RESET outputs.

The MAX20484 significantly reduces system size and component count while improving reliability, as compared to separate ICs or discrete components. The MAX20484 meets ASIL D reliability when used with a supervisory controller. The device is designed to operate over the ambient temperature range of -40°C to +125°C.

Applications

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

* Small Solution

* 2.35V to 5.60V Operating Supply Voltage * Only One External Component Required * 150µA Operating Current * 8µA Power-Down Mode * Universal Channel Configurations

* High Precision

* Selectable 102.5% to 110% OV Monitors * Selectable 97.5% to 90% UV Monitors * ±0.8% Accuracy with 0.5% Step Size * ASIL D Compliance

* Highly Integrated

* Five Fixed-Voltage Monitoring Inputs * Clock/Fault Monitor Input (25kHz to 50MHz) * Power-Sequencing Recording * Simple or Challenge/Response Windowed Watchdog * Fault Recording * CRC on I2C Interface * Programmable I2C Address * OTP Configuration with Error-Correcting Code and Reload Functionality * Two Independently Programmable Active-Low RESET Pins

* 3mm x 3mm, 16-Pin, Side-Wettable TQFN-EP * AEC-Q100 Qualified * -40°C to +125°C Operating Temperature