General Description

The MAX34461A is a system monitor that is capable of

managing up to 16 power supplies. The power-supply

manager monitors the power-supply output voltages and

constantly checks for user-programmable overvoltage

and undervoltage thresholds. If a fault is detected, the

device automatically shuts down the system in an orderly

fashion. The device can sequence the supplies in any

order at both power-up and power-down. With the addition

of external current DACs, the device has the ability to

close-loop margin the power-supply output voltages up or

down to a user-programmable level. The device contains

an internal temperature sensor and can support up to four

external remote temperature sensors. Once configured,

the device can operate autonomously without any host

intervention.

Benefits and Features

● 16 Channels of Power-Supply Management

● On-Board Nonvolatile Black Box Fault Logging and

Default Configuration Setting

● Supports Complex Sequencing Requirements

• Time- and Event-Based Sequencing

• Parallel/Cascaded Device Operation

• Programmable Up and Down Sequencing

● Easy to Program and Monitor

• PMBus-Compatible Command Interface

• Easy-to-Use GUI

● Flexible Measurement and Monitoring Capability

• Reports Peak and Average Levels

• Four Remote Temperature Sensors

• One Internal Temperature Sensor

● Automatic Closed-Loop Margining Improves Accuracy

● Remote Ground Sensing Improves Measurement

Accuracy

● Simplifies System-Level Design

• Up to 16 GPOs

• No External Clocking Minimizes System-Level

Design

• I2C/SMBus-Compatible Serial Bus with Bus

Timeout Function

• Power-Supply Voltage Measurement and

Monitoring

● Fast Minimum/Maximum Threshold Excursion

Detection

● 3.0V to 3.6V Supply Voltage

Applications

● Network Switches/Routers

● Base Stations

● Servers

● Smart Grid Network Systems