General Description

The MAX34460A is a system monitor that is capable of

managing up to 12 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

● 12 Channels of Power-Supply Management

● On-Board Nonvolatile Black Box Fault Logging and

Default Configuration Setting

● Supports Complex Sequencing Requirements

• Dual Sequencing Groups

• Time- and Event-Based Sequencing

• Parallel/Cascaded Device Operation

• Programmable Up and Down Sequencing

• Watchdog Timer Function

● Easy to Program and Monitor

• PMBus™-Compatible Command Interface

• Easy-to-Use GUI

• Programmable Alarm Outputs

● 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 20 GPOs

• No External Clocking Required

• I2C/SMBus-Compatible Serial Bus with Bus

Timeout Function

● Fast Minimum/Maximum Threshold-Excursion

Detection

● 3.0V to 3.6V Supply Voltage

Applications

● Network Switches/Routers

● Base Stations

● Servers

● Smart Grid Network Systems