參數(shù)資料
型號(hào)： MAX5965AEAX+
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： High-Power, Quad, Monolithic, PSE Controllers for Power over Ethernet; Package: SSOP;36 pin;163 mm² ; Temperature: -40°C to +85°C
中文描述： 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封裝： ROHS COMPLIANT, SSOP-36
文件頁(yè)數(shù)： 17/54頁(yè)
文件大?。?/td> 1525K
代理商： MAX5965AEAX+
MAX5965A/MAX5965B
High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
24
______________________________________________________________________________________
Watchdog
The R1Eh and R1Fh registers control the watchdog
operation. The watchdog function, when enabled, allows
the MAX5965A/MAX5965B to gracefully take over con-
trol or securely shuts down the power to the ports in
case of software/firmware crashes. Contact the factory
for more details.
Address Inputs
A3, A2, A1, and A0 represent the 4 LSBs of the chip
address. The complete chip address is 7 bits (see
Table 4).
The 4 LSBs latch on the low-to-high transition of RESET or
after a power-supply start (either on VDD or VEE). Address
inputs default high through an internal 50k
pullup resistor
to VDD. The MAX5965A/MAX5965B also respond to the
call through a global address 30h (see the
Global
Addressing and Alert Response Protocol section).
I2C-Compatible Serial Interface
The MAX5965A/MAX5965B operate as a slave that
sends and receives data through an I2C-compatible, 2-
wire or 3-wire interface. The interface uses a serial-data
input line (SDAIN), a serial-data output line (SDAOUT),
and a serial-clock line (SCL) to achieve bidirectional
communication between master(s) and slave(s). A mas-
ter (typically a microcontroller) initiates all data transfers
to and from the MAX5965A/MAX5965B, and generates
the SCL clock that synchronizes the data transfer. In
most applications, connect the SDAIN and the SDAOUT
lines together to form the serial-data line (SDA).
Using the separate input and output data lines allows
optocoupling with the controller bus when an isolated
supply powers the microcontroller.
The MAX5965A/MAX5965B SDAIN line operates as an
input. The MAX5965A/MAX5965B SDAOUT operates as
an open-drain output. A pullup resistor, typically 4.7k
,
is required on SDAOUT. The MAX5965A/MAX5965B SCL
line operates only as an input. A pullup resistor, typically
4.7k
, is required on SCL if there are multiple masters,
or if the master in a single-master system has an open-
drain SCL output.
0
1
0
A3
A2
A1
A0
R/W
Table 4. MAX5965A/MAX5965B Address
Figure 4. 2-Wire, Serial-Interface Timing Details
SCL
SDAIN
tLOW
tHIGH
tR
tF
tBUF
START
CONDITION
STOP
CONDITION
REPEATED START CONDITION
START CONDITION
tHD, STA
tSU, DAT
tHD, DAT
tSU, STA
tHD, STA
tSU, STO
Figure 5. 3-Wire, Serial-Interface Timing Details
SCL
SDAIN/SDA
tLOW
tHIGH
tR
tF
tBUF
START
CONDITION
STOP
CONDITION
REPEATED START CONDITION
START CONDITION
tHD, STA
tSU, DAT
tHD, DAT
tSU, STA
tHD, STA
tSU, STO
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5965AEAX+ 功能描述:熱插拔功率分布 Quad PSE Controller for POE 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
MAX5965AEAX+T 功能描述:熱插拔功率分布 Quad PSE Controller for POE 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
MAX5965AUAX+ 功能描述:熱插拔功率分布 Quad PSE Controller for POE 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
MAX5965AUAX+T 功能描述:熱插拔功率分布 Quad PSE Controller for POE 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
MAX5965BCAX+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
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