value for tFAULT and t<" />
參數(shù)資料
型號: MAX5945CAX+
廠商: Maxim Integrated Products
文件頁數(shù): 28/44頁
文件大?。?/td> 0K
描述: IC NETWORK PWR CTRL 36-SSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 30
控制器類型: 網(wǎng)絡(luò)電源控制器
接口: I²C
電源電壓: 3.3V
電流 - 電源: 4.2mA
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 36-BSOP(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 36-SSOP
包裝: 管件
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
相關(guān)PDF資料
PDF描述
PIC16F1933T-I/SO MCU 8BIT 4K FLASH 28SOIC
VE-231-CV-S CONVERTER MOD DC/DC 12V 150W
PIC16LF726T-I/SO IC PIC MCU FLASH 8KX14 28-SOIC
PIC16F882-E/SS IC PIC MCU FLASH 2KX14 28SSOP
DS2141AQ IC CONTROLLER T1 5V 44-PLCC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5945CAX+ 功能描述:熱插拔功率分布 IEEE 802.3af Quad Net Pwr Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5945CAX+T 功能描述:熱插拔功率分布 IEEE 802.3af Quad Net Pwr Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5945CAX-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5945EAX 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5945EAX+ 功能描述:熱插拔功率分布 IEEE 802.3af Quad Net Pwr Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube