MAX34440 MAXIM [Maxim Integrated Products], MAX34440 Datasheet
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MAX34440
Manufacturer Part Number
MAX34440
Description
PMBus 6-Channel Power-Supply Manager
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.MAX34440.pdf
(43 pages)
19-5527; Rev 0; 9/10
The MAX34440 is a complex system monitor that can
manage up to six power supplies. The power-supply
manager monitors the power-supply output voltage and
constantly checks for user-programmable overvoltage
and undervoltage thresholds. It can also margin the
power-supply output voltage up or down to a user-
programmable level. The margining is performed in a
closed-loop arrangement whereby the device automati-
cally adjusts a pulse-width-modulated (PWM) output and
then measures the resultant output voltage. The power-
supply manager can also sequence the supplies in any
order at both power-up and power-down. With the addi-
tion of an external current-sense amplifier, the device
can also monitor currents.
PMBus is a trademark of SMIF, Inc.
SMBus is a trademark of Intel Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, go to: www.maxim-ic.com/errata.
Network Switches/Routers
Base Stations
Servers
Smart Grid Network Systems
Industrial Controls
PMBus 6-Channel Power-Supply Manager
_______________________________________________________________ Maxim Integrated Products 1
General Description
Applications
S 6 Channels of Power-Supply Management
S Supports Up to Eight Temperature Sensors
S PMBus™-Compliant Command Interface
S I
S On-Board Nonvolatile Fault Logging and Default
S No External Clocking Required
S +3.3V Supply Voltage
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
MAX34440ETL+
MAX34440ETL+T
Timeout Function
Configuration Setting
2
C/SMBus™-Compatible Serial Bus with Bus
Voltage Measurement/Monitoring
Supports Current Monitoring with External
Automatic Closed-Loop Margining
Programmable Up and Down Sequencing
Power-Good Output
Two Remote Diode Temperature Sensors
Five Local Temperature Sensors
One Internal Temperature Sensor
Fault Detection on All Temp Sensors
PART
Differential 12-Bit 1% Accurate ADC
Min/Max Threshold Excursion Detection
Current-Sense Amplifier
-40NC to +85NC
-40NC to +85NC
TEMP RANGE
Ordering Information
PIN-PACKAGE
40 TQFN-EP*
40 TQFN-EP*
Features