MAX34461 Datasheet, PDF (1/59 Pages) Maxim Integrated Products – PMBus 16-Channel Voltage Monitor and Sequencer

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
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
S PMBus™-Compliant Command Interface
S I²C/SMBus-Compatible Serial Bus with Bus
Timeout Function
S On-Board Nonvolatile Black Box Fault Logging
and Default Configuration Setting
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
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