MAX20484

RECOMMENDED FOR NEW DESIGNS

Three- to Five-Input Power-System Monitor with Clock Monitor and Watchdog A Complete ASIL D Compliant SoC Power-System Monitor with up to Five Voltage Monitor Inputs

Analog Devices MAX20484 Product Info

10 February 2026 4

Features

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

Part details & applications

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

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