ABRIDGED DATA SHEET
Four- to Seven-Input Industrial Power System
MAX42500
Monitor Family
Benefits and Features
General Description
The MAX42500 is a system-on-a-chip (SoC) power
system monitor with up to seven voltage monitor inputs.
•
•
Small Solution
• 2.35V to 5.50V Operating Supply Voltage
• Only One External Component Required
• 150μA Operating Current
Each
input
has
programmable
overvoltage
(OV)/undervoltage (UV) thresholds of between 2.5%
and 10% with ±1.3% accuracy over the full temperature
range. Two of the inputs have a separate remote
ground-sense input and support dynamic voltage scaling
(DVS) through the integrated I2C interface.
• 8μA Power-Down Mode
High Precision
• Selectable 102.5% to 110% OV Monitors
• Selectable 97.5% to 90% UV Monitors
• Programmable UV and OV Thresholds
• ±1.0% Accuracy (-40°C to +85°C)
• ±1.3% Accuracy (-40°C to +125°C)
• 0.5% Step Size
The MAX42500 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 MAX42500 also contains
a
programmable
•
Highly Integrated
challenge/response watchdog, which is accessible
through the I2C interface along with a configurable
RESET output.
• Five Fixed-Voltage Monitoring Inputs
• Two Differential DVS Tracking-Voltage
Monitoring Inputs with Remote Ground Sense
• Power-Sequencing Recording
• Simple or Challenge/Response Windowed
Watchdog
The MAX42500 improves reliability while significantly
reducing system size and component count as
compared to separate ICs or discrete components. The
MAX42500 is suitable for use in safety functions up to
SIL 3. The device is designed to operate over the
ambient temperature range of -40°C to +125°C.
• Fault Recording
• Cyclic Redundancy Check (CRC) on I2C Interface
• Programmable I2C Address
• OTP Configuration with Error-Correcting Code
and Reload Functionality
• Programmable Active Low RESET Pin
Key Applications
•
•
•
•
•
Industrial Process Control
Robotics
Remote Sensor Modules
Power System Supervision
Microcontroller Unit (MCU)/SoC Monitoring
•
•
•
16 Pin TQFN with Exposed Pad (3mm x 3mm)
Ongoing Certification Process to IEC 61508 SIL 3
-40°C to +125°C Operating Temperature
Simplified Block Diagram
Ordering Information appears at the end of datasheet.
19-101743; Rev Sp0; 10/23
© 2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.