MAX34440 MAXIM [Maxim Integrated Products], MAX34440 Datasheet

MAX34440

Manufacturer Part Number

MAX34440

Description

PMBus 6-Channel Power-Supply Manager

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.MAX34440.pdf (43 pages)

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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

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

TEMP RANGE

Ordering Information

PIN-PACKAGE

40 TQFN-EP*

Features

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