EVALUATION KIT AVAILABLE
MAX34461
PMBus 16-Channel Voltage Monitor and Sequencer
General Description
Features
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.
S 16 Channels of Power-Supply Management
S Power-Supply Voltage Measurement and
Monitoring
S Fast Minimum/Maximum Threshold Excursion
Detection
S Remote Ground Sensing Improves Measurement
Accuracy
S Automatic Closed-Loop Margining
S Programmable Up and Down Sequencing
S Supports Up to Five Temperature Sensors
(One Internal/Four Remote)
S Fault Detection on All Temperature Sensors
S Reports Peak and Average Levels for a Number of
Parameters
Applications
S PMBus™-Compliant Command Interface
Network Switches/Routers
Base Stations
2
S I C/SMBus-Compatible Serial Bus with Bus
Timeout Function
Servers
S On-Board Nonvolatile Black Box Fault Logging
and Default Configuration Setting
Smart Grid Network Systems
S Expandable Channel Operation with Parallel Devices
S Up to 16 GPOs
S No External Clocking Required
S 3.0V to 3.6V Supply Voltage
Ordering Information and Typical Operating Circuit appear
at end of data sheet.
Differences from MAX34460
S Adds 4 Channels of Monitoring, Sequencing, and
Margining
S Removes Dual Loop Sequencing, Watchdog, and
Alarm Output Functionality
PMBus is a trademark of SMIF, Inc.
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX34461.related
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6485; Rev 0; 9/12