參數(shù)資料
型號(hào)： MAX5945CAX+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 34/44頁(yè)
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
Quad Network Power Controller
for Power-Over-LAN
4
_______________________________________________________________________________________
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
AC Load Disconnect
Threshold (Note 4)
IACTH
Current into DET_, ACD_EN_ bit = high,
OSC_IN = 2.2V
300
325
350
A
Oscillator Buffer Gain
AOSC
VDET_ / VOSC_IN, ACD_EN_ bit = high,
CDET = 400nF
2.92
2.98
3.04
V/V
OSC_IN Fail Threshold
(Note 5)
VOSC_FAIL
Port will not power on if VOSC_IN < VOSC_FAIL and
ACD_EN_ bit = high
1.8
1.9
2.1
V
OSC_IN Input Resistance
ZOSC
OSC_IN input impedance when all the ACD_EN_
are active
100
k
OSC_IN Input Capacitance
COSC_IN
5pF
Load Disconnect Timer
tDISC
Time from VSENSE < VDCTH or current into DET_
< IACTH to gate shutdown (Note 6)
300
400
ms
DETECTION
Detection Probe Voltage
(First Phase)
VDPH1
VAGND - VDET_ during the first detection phase
3.8
4
4.2
V
Detection Probe Voltage
(Second Phase)
VDPH2
VAGND - VDET_ during the second detection
phase
9.0
9.3
9.6
V
Current-Limit Protection
IDLIM
VDET_ = VAGND, during detection, measure
current through DET_
1.5
1.75
2.0
mA
Short-Circuit Threshold
VDCP
If VAGND - VOUT < VDCP after the first detection
phase a short circuit to AGND is detected
1.62
V
Open-Circuit Threshold
ID_OPEN
First point measurement current threshold for
open condition
12.5
A
Resistor Detection Window
RDOK
(Note 7)
18.6
26.5
k
Detection rejects lower values
16
Resistor Rejection Window
RDBAD
Detection rejects higher values
30
k
CLASSIFICATION
Classification Probe Voltage
VCL
VAGND - VDET_ during classification
16
20
V
Current-Limit Protection
IClLIM
VDET_ = VAGND, during classification,
measure current through DET_
50
75
mA
Class 0, class 1
5.5
6.5
7.5
Class 1, class 2
13.5
14.5
15.5
Class 2, class 3
21.5
23
24.5
Class 3, class 4
31
33
35
Classification Current
Thresholds
ICL
Classification current
thresholds between
classes
>Class 4
45
48
51
mA
DIGITAL INPUTS/OUTPUTS (REFERRED to DGND)
Digital Input Low
VIL
0.9
V
Digital Input High
VIH
2.4
V
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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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