MAX34441

更新时间： 2024-09-12 11:17:31

品牌	Logo	应用领域
美信 - MAXIM		风扇控制器
页数	文件大小	规格书
53页	1614K
描述
PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller

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MAX34441 数据手册

19-5488; Rev 0; 8/10

PMBus 5-Channel Power-Supply Manager

and Intelligent Fan Controller

General Description

Features

S 5 Channels of Power-Supply Management

The MAX34441 is a complex system monitor that can man-

age up to five power supplies and a fan. 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-programma-

ble level. The margining is performed in a closed-loop

arrangement whereby the device automatically adjusts

a pulse-width-modulated (PWM) output and then mea-

sures 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 addition of

an external current-sense amplifier, the device can also

monitor currents.

Voltage Measurement/Monitoring

Differential 12-Bit 1% Accurate ADC

Min/Max Threshold Excursion Detection

Supports Current Monitoring with External

Current-Sense Amplifier

Automatic Closed-Loop Margining

Programmable Up and Down Sequencing

Power-Good Output

S 1 Channel of Fan Control

Supports 3-Wire and 4-Wire Fans

Automatic Closed-Loop Fan-Speed Control

Support for Dual Tachometer Fans

Fan-Fault Detection

The device also contains closed-loop fan-speed control.

Based on user-programmable settings for fan-control

PWM duty cycles or RPM speeds at particular tempera-

ture breakpoints, the device automatically adjusts the fan

speed in a manner to reduce audible noise and power

consumption.

S Supports Up to Six Temperature Sensors

External Thermal Diode Interface with

Automatic Series Resistance Cancellation

One Internal Temperature Sensor

Support for Up to Four Additional I C Digital

Temp Sensor ICs

Fault Detection on All Temp Sensors

Applications

Network Switches/Routers

Base Stations

S PMBus™-Compliant Command Interface

S I C/SMBus™-Compatible Serial Bus with Bus

Timeout Function

Servers

S On-Board Nonvolatile Fault Logging and Default

Smart Grid Network Systems

Industrial Controls

Configuration Setting

S No External Clocking Required

S +3.3V Supply Voltage

Ordering Information

PART

TEMP RANGE

-40NC to +85NC

PIN-PACKAGE

40 TQFN-EP*

MAX34441ETL+

MAX34441ETL+T

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

*EP = Exposed pad.

PMBus is a trademark of SMIF, Inc.

SMBus is a trademark of Intel Corp.

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.

_______________________________________________________________ Maxim Integrated Products

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.

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与MAX34441相关器件

型号	品牌	获取价格	描述	数据表
MAX34441ETL+	MAXIM	获取价格	PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
MAX34441ETL+T	MAXIM	获取价格	PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
MAX34446	MAXIM	获取价格	PMBus Power-Supply Data Logger Calculates Power Consumption
MAX34446	ADI	获取价格	PMBus电源数据记录器
MAX34446_12	MAXIM	获取价格	PMBus Power-Supply Data Logger
MAX34446ETL	MAXIM	获取价格	PMBus Power-Supply Data Logger Calculates Power Consumption
MAX34446ETL+	MAXIM	获取价格	暂无描述
MAX34446ETLT	MAXIM	获取价格	PMBus Power-Supply Data Logger Calculates Power Consumption
MAX3444E	MAXIM	获取价格	【15kV ESD-Protected, 【60V Fault-Protected, 10
MAX3444E	ADI	获取价格	±15kV ESD保护、±60V故障保护、10Mbps、失效保护型RS-485/J1708

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