MAX34461 Datasheet | Maxim Integrated

EVALUATION KIT AVAILABLE MAX34461 PMBus 16-Channel Voltage Monitor and Sequencer General Description The MAX34461 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. Applications Network Switches/Routers Base Stations Servers Smart Grid Network Systems Ordering Information and Typical Operating Circuit appear at end of data sheet. Features S16 Channels of Power-Supply Management SPower-Supply Voltage Measurement and Monitoring SFast Minimum/Maximum Threshold Excursion Detection SRemote Ground Sensing Improves Measurement Accuracy SAutomatic Closed-Loop Margining SProgrammable Up and Down Sequencing SSupports Up to Five Temperature Sensors (One Internal/Four Remote) SFault Detection on All Temperature Sensors SReports Peak and Average Levels for a Number of Parameters SPMBus™-pliant mand Interface SI2C/SMBus-patible Serial Bus with Bus Timeout Function SOn-Board Nonvolatile Black Box Fault Logging and Default Configuration Setting SExpandable Channel Operation with Parallel Devices SUp to 16 GPOs SNo External Clocking Required S3.0V to 3.6V Supply Voltage Differences from MAX34460 SAdds 4 Channels of Monitoring, Sequencing, and Margining SRemoves Dual Loop Sequencing, Watchdog, and Alarm Output Functionality PMBus is a trademark of...