参数资料
型号: MAX34441ETL+
厂商: Maxim Integrated Products
文件页数: 23/53页
文件大小: 0K
描述: IC PS MANAGER PMBUS 5CH 40TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
应用: 基站网络线路卡,服务器
电源电压: 2.7 V ~ 5.5 V
电流 - 电源: 2.5mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-TQFN-EP(6x6)
包装: 托盘
其它名称: 90-34441+T00
PMBus 5-Channel Power-Supply Manager
and Intelligent Fan Controller
Table_7._Fan_Control_Operation_Modes
FAN_CONTROL_
MODE
Manual PWM
FAN_OPERATIONAL_DETAILS
External host controls the fan speed by directly setting the fan
PWM duty cycle values.
BIT_6_OF__
FAN_CONFIG_1_2
0
VALUE_IN__
FAN_COMMAND_1
0000h to 7FFFh
External host controls the fan speed by setting target fan speed
Manual RPM
values. The device reads the actual fan speed, and close loop
1
0000h to 7FFFh
adjusts the output fan PWM to match the target fan speed.
The device sets the output PWM based on the fan LUT that
Automatic PWM
maps the temperature sensor readings to the required fan PWM
0
8000h to FFFFh
duty-cycle values.
The device reads the actual fan speed and close loop adjusts
Automatic RPM
the output fan PWM to match the target fan speed based on
the fan LUT that maps the temperature sensor readings to the
1
8000h to FFFFh
required fan speed.
Note: The RPM modes should only be used with fans that provide a tachometer output.
OFFSET ADJUSTMENT
ALLOWS TEMPERATURE
ZONE NORMALIZATION
PAGE 7
I 2 C REMOTE
TEMP SENSOR 0
+15°C
PAGE 8
I 2 C REMOTE
TEMP SENSOR 1
+10°C
FAN 8 LEVEL
LOOKUP TABLE
PAGE 9
PAGE 10
I 2 C REMOTE
TEMP SENSOR 2
I 2 C REMOTE
TEMP SENSOR 3
0°C
0°C
FAN
HIGHEST TEMPERATURE
CONTROLS THE FAN
PAGE 11
PAGE 6
REMOTE DIODE
TEMP SENSOR
INTERNAL
TEMP SENSOR
+5°C
+5°C
Figure 1. Automatic Fan Control
23
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