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参数资料
| 型号： | MAX34446ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/36页 |
| 文件大小： | 0K |
| 描述： | IC PS DATA LOGGER PMBUS 40TQFN |
| 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： | 3mA |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
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MAX34446
PMBus Power-Supply Data Logger
Voltage/Current Monitoring
ADC inputs 0 to 3 can be independently configured to
monitor either voltage or current. The device defaults to
monitoring voltage on the ADC0 to ADC3 inputs, but if the
IOUT_OC_FAULT_LIMIT command is configured with a
positive nonzero value, the device instead monitors cur-
rent on the associated ADC input. When an ADC input
is configured to monitor voltage, all current related com-
mands (like READ_IOUT) are invalid on the associated
page and, likewise when an ADC input is configured to
monitor current, all voltage-related commands are invalid
and the PGn outputs are forced high impedance.
Power Calculation
The device can be configured to calculate power con-
sumption. The READ_POUT, MFR_POUT_PEAK, and
MFR_POUT_AVG commands only contain valid data
when the device is configured as shown below. The
device can calculate power on up to two power nodes
by using 4 channels of the ADC: two for voltage mea-
surement and two for current measurement. To measure
power, ADC0 and ADC1 must be coupled together and
ADC2 and ADC3 must be coupled together. Since the
PMBus page alignment is assigned based on the ADC
input, power is reported in both pages of the associated
coupled voltage/current pair.
ADC0 = Voltage
Temperature Sensor Operation
The device can monitor up to three different temperature
sensors, two external remote diode temperature sensors
plus its own internal temperature sensor. The device
defaults to having the temperature sensors disabled,
but if the OT_FAULT_LIMIT command is configured
with a positive nonzero value, the temperature sensor is
enabled on the associated page. The device reads one
of the enabled temperature sensors once per second.
Hence, if only one temperature sensor is enabled, it is
read every second. If all three temperature sensors are
enabled, each sensor is read once every 3 seconds.
Each time the device attempts to read a temperature
sensor, it checks for faults. For the remote diode, a fault
is defined as a reading greater than +160 N C or less than
-60 N C. For the internal temperature sensor, a fault is
defined as a reading greater than +130 N C or less than
-60 N C. Temperature sensor faults are reported by setting
the temperature reading to 7FFFh. A temperature sensor
fault results in the setting of the TEMPERATURE bit in
STATUS_BYTE and STATUS_WORD. No bits are set in
STATUS_MFR_SPECIFIC.
The remote diode temperature sensor can support either
npn or pnp transistors. The device automatically cancels
the series resistance that can affect remote diodes that
are located far from the device.
Power Measurement 1
(Page 0 or 1)
Power Measurement 2
(Page 2 or 3)
Maxim Integrated
Measurement (Page 0)
ADC1 = Current
Measurement (Page 1)
ADC2 = Voltage
Measurement (Page 2)
ADC3 = Current
Measurement (Page 3)
15
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX34446EVKIT# | 功能描述:监控电路 MAX34446 Eval Kit RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX3444EAPA | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3444EASA | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3444EASA+ | 功能描述:RS-485接口IC 10Mbps Fail-Safe RS-485/J1708 Tcvr RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3444EASA+T | 功能描述:RS-485接口IC 10Mbps Fail-Safe RS-485/J1708 Tcvr RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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