參數(shù)資料
型號(hào)： MAX5945CAX+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 41/44頁(yè)
文件大小： 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(lèi)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(lèi)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
Quad Network Power Controller
for Power-Over-LAN
6
_______________________________________________________________________________________
Note 2: Default values. The charge/discharge currents are programmable through the serial interface (see the Register Map and
Description section).
Note 3: Default values. The current-limit thresholds are programmed through the I2C-compatible serial interface (see the Register
Map and Description section).
Note 4: This is the default value. Threshold can be programmed through serial interface R23h[2:0].
Note 5: AC disconnect works only if VDD - VDGND ≥ 3V.
Note 6: tDISC can also be programmed through the serial interface (R29h) (see the Register Map and Description section).
Note 7: RD = (VOUT_2 - VOUT_1) / (IDET_2 - IDET_1). VOUT_1, VOUT_2, IDET_2 and IDET_1 represent the voltage at OUT_ and the current
at DET_ during phase 1 and 2 of the detection.
Note 8: Default values. The startup and fault times can also be programmed through the I2C serial interface (see the Register Map
and Description section).
Note 9: Guaranteed by design. Not subject to production testing.
ANALOG SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX5945
toc01
INPUT VOLTAGE (V)
SUPPLY
CURRENT
(mA)
57
52
47
42
37
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
3.5
32
62
MEASURED AT AGND
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
MAX5945
toc02
TEMPERATURE (°C)
SUPPLY
CURRENT
(mA)
60
35
10
-15
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
5.0
3.0
-40
85
DIGITAL SUPPLY CURRENT
vs. TEMPERATURE
MAX5945
toc03
TEMPERATURE (°C)
SUPPLY
CURRENT
(mA)
60
35
10
-15
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
-40
85
Typical Operating Characteristics
(VEE = -48V, VDD = +3.3V, AUTO = AGND = DGND = 0V, RESET = SHD_ = unconnected, RSENSE = 0.5, all registers = default setting,
TA = +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(AGND = +32V to +60V, VEE = 0V, VDD to DGND = +3.3V, all voltages are referenced to VEE, unless otherwise noted. Typical
values are at AGND = +48V, DGND = +48V, VDD = (DGND + 3.3V), TA = +25°C. Currents are positive when entering the pin and
negative otherwise.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Setup Time for a Repeated
START Condition (Sr)
tSU, STA
(Note 9)
0.6
s
Data Hold Time
tHD, DAT
(Note 9)
0
150
ns
Data Setup Time
tSU, DAT
(Note 9)
100
ns
Rise Time of Both SDA and
SCL Signals, Receiving
tR
(Note 9)
20 + 0.1CB
300
ns
Fall Time of SDA Transmitting
tF
(Note 9)
20 + 0.1CB
300
ns
Setup Time for STOP Condition
tSU, STO
(Note 9)
0.6
s
Capacitive Load for Each Bus
Line
CB
(Note 9)
400
pF
Pulse Width of Spike
Suppressed
tSP
(Note 9)
50
ns
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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
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