参数资料
型号: MAX34440ETL+T
厂商: Maxim Integrated Products
文件页数: 41/43页
文件大小: 0K
描述: IC PS MANAGER PMBUS 6CH 40TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
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: 带卷 (TR)
其它名称: 90-34440+TTR
MAX34440
PMBus 6-Channel Power-Supply Manager
Table 26. MFR_TEMP_SENSOR_CONFIG
BIT
15
14:0
BIT NAME
ENABLE
0
MEANING
Clearing and setting this bit reinitializes the temperature sensor.
0 = Temperature sensor disabled.
1 = Temperature sensor enabled.
These bits always return a 0.
1) Sets the NONE OF THE ABOVE bit in STATUS_BYTE.
2) Sets the NONE OF THE ABOVE and MFR bits in
STATUS_WORD.
3) Sets the MARGIN_FAULT bit in STATUS_MFR_SPECIFIC.
4) Notifies the host through ALERT assertion (if enabled
in MFR_MODE).
MFR_TEMP_SENSOR_CONFIG (F0h)
The MFR_TEMP_SENSOR_CONFIG command is used to
configure the temperature sensors. Table 26 describes
the MFR_TEMP_SENSOR_CONFIG command.
Applications Information
Power-Supply Decoupling
To achieve the best results when using the device,
decouple the V DD power supply with a 0.1 F F capacitor.
Use a high-quality, ceramic, surface-mount capacitor
if possible. Surface-mount components minimize lead
inductance, which improves performance, and ceram-
ic capacitors tend to have adequate high-frequency
response for decoupling applications.
Maxim Integrated
Decouple the REG18 regulator outputs using 1 F F and
10nF capacitors. Decouple the REG25 pin with 30μF to
47μF of capacitance.
Do not connect other circuitry to either of these pins.
Open-Drain Pins
MSDA, MSCL, SCL, SDA, FAULT , and ALERT are open-
drain pins and require external pullup resistors con-
nected to V DD to realize high logic levels.
PSEN0 to PSEN5 can be user-configured as either
CMOS push-pull or open-drain outputs. When config-
ured as open-drain, external pullup resistors connected
to V DD are required to realize high logic levels (see the
MFR_MODE settings).
Protecting Input Pins
In applications where voltages can be applied to the RS
or CONTROL signals, when V DD is grounded, a series
100ω resistor is recommended to protect the device by
limiting power dissipation.
41
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