参数资料
型号: MAX5945EAX+T
厂商: Maxim Integrated Products
文件页数: 28/44页
文件大小: 0K
描述: IC NETWORK PWR CTRL 36-SSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
控制器类型: 网络电源控制器
接口: I²C
电源电压: 3.3V
电流 - 电源: 4.2mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 36-BSOP(0.295",7.50mm 宽)
供应商设备封装: 36-SSOP
包装: 带卷 (TR)
MAX5945
Use the program registers (Table 29) to set the nominal
value for tFAULT and tSTART for all ports according to
the following formula:
tFAULT nominal = 40.96ms + 2.72ms x N
tSTART nominal = 40.96ms + 2.72ms x N
where N is the decimal value of TF_PR[3:0] or
TS_PR[3:0], respectively.
A reset sets R28h = 77h, which sets tFAULT = tSTART =
60ms as shown in the Electrical Characteristics. Use
R28h in conjunction with the two TSTART and TFAULT
bits in register R16h to program the values of tFAULT
and tSTART from about 20ms to almost 330ms with a
2.72ms resolution.
Example: Set TF_PR[3:0] = 1111b, TFAULT[1:0] = 11b
Then:
tFAULT = 4 x tFAULT nominal
= 4 x (40.96ms + 2.72ms x 15)
= 327ms
Note: The programmed value has the same percent-
age tolerance as the value specified in the Electrical
Characteristics.
Quad Network Power Controller
for Power-Over-LAN
34
______________________________________________________________________________________
ADDRESS = 28h
SYMBOL
BIT
R/W
DESCRIPTION
7
R
TF_PR[3]. tFAULT nominal programming bit 3.
6
R
TF_PR[2]. tFAULT nominal programming bit 2.
5
R
TF_PR[1]. tFAULT nominal programming bit 1.
TF_PR
4
R
TF_PR[0]. tFAULT nominal programming bit 0.
3
R
TS_PR[3]. tSTART nominal programming bit 3.
2
R
TS_PR[2]. tSTART nominal programming bit 2.
1
R
TS_PR[1]. tSTART nominal programming bit 1.
TS_PR
0
R
TS_PR[0]. tSTART nominal programming bit 0.
Table 29. Program Register 3
相关PDF资料
PDF描述
ENC28J60T/ML IC ETHERNET CTRLR W/SPI 28QFN
ENC28J60/SP IC ETHERNET CTRLR W/SPI 28DIP
413760-5 CONN JACK BNC AT&T 728 HEX CRIMP
ENC28J60/SO IC ETHERNET CTRLR W/SPI 28SOIC
ENC28J60/ML IC ETHERNET CTRLR W/SPI 28QFN
相关代理商/技术参数
参数描述
MAX5945EVKIT 功能描述:电源管理IC开发工具 Evaluation Kit/Evaluation System for the MAX5945 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
MAX5945EVSYS 功能描述:电源管理IC开发工具 Evaluation Kit/Evaluation System for the MAX5945 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
MAX5946AETJ 制造商:Maxim Integrated Products 功能描述:DUAL PCI-EXPRESS HOT-PLUG CONTROLLER - Rail/Tube
MAX5946AETX 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5946AETX+ 功能描述:热插拔功率分布 Dual PCIe Hot-Plug Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube