參數(shù)資料
型號(hào)： MAX5945
廠商： Maxim Integrated Products, Inc.
英文描述： Quad Network Power Controller for Power-Over-LAN
中文描述： 四路網(wǎng)絡(luò)電源控制器，用于LAN供電
文件頁(yè)數(shù)： 3/44頁(yè)
文件大?。?/td> 572K
代理商： MAX5945
M
Quad Network Power Controller
for Power-Over-LAN
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(AGND = +32V to +60V, V
EE
= 0V, V
DD
to DGND = +3.3V, all voltages are referenced to V
EE
, unless otherwise noted. Typical
values are at AGND = +48V, DGND = +48V, V
DD
= (DGND + 3.3V), T
A
= +25°C. Currents are positive when entering the pin and
negative otherwise.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Foldback Current-
Limit Threshold
V
TH_FB
V
OUT_
= V
AGND
64
mV
SENSE_ Input Bias Current
SUPPLY MONITORS
V
EE
Undervoltage Lockout
V
EE
Undervoltage-Lockout
Hysteresis
V
SENSE_
= V
EE
-2
μA
V
EEUVLO
V
AGND
- V
EE
, (V
AGND
- V
EE
) increasing
27
28.5
30
V
V
EEUVLOH
3
V
V
EE
Overvoltage
V
EE_OV
(V
AGND
- V
EE
)
> V
EE_OV
, V
AGND
increasing
61
62.5
64
V
V
EE
Overvoltage Hysteresis
V
OVH
1
V
V
EE
Undervoltage
V
EE_UV
(V
AGND
- V
EE
) < V
EE_UV
, V
AGND
decreasing
39
40
41
V
V
DD
Overvoltage
V
DD_OV
(V
DD
- V
DGND
)
> V
DD_OV
, V
DD
increasing
3.57
3.71
3.90
V
V
DD
Undervoltage
V
DD_UV
(V
DD
- V
DGND
) < V
DD_UV
, V
DD
decreasing
2.55
2.82
2.97
V
V
DD
Undervoltage Lockout
V
DDUVLO
Device operates when (V
DD
- V
DGND
) >
V
DDUVLO
, V
DD
increasing
1.7
V
V
DD
Undervoltage-Lockout
Hysteresis
V
DDHYS
120
mV
Thermal-Shutdown Threshold
T
SHD
Ports shut down and device resets if its junction
temperature exceeds this limit, temperature
increasing
+150
°C
Thermal-Shutdown Hysteresis
OUTPUT MONITOR
OUT_ Input Current
T
SHDH
20
°C
I
BOUT
V
OUT
= V
AGND
, all modes
2
μA
Idle Pullup Current at OUT_
I
DIS
OUT_ discharge current, detection and
classification off, port shutdown,
V
OUT_
= V
AGND
- 2.8V
200
260
μA
PGOOD High Threshold
PGOOD Hysteresis
PG
TH
PG
HYS
V
OUT_
- V
EE
, OUT_ decreasing
1.8
2.0
220
2.2
V
mV
PGOOD Low-to-High Glitch
Filter
t
PGOOD
Minimum time PGOOD has to be high to set bit in
register 10h
2
4
ms
LOAD DISCONNECT
DC Load Disconnect
Threshold
V
DCTH
Minimum V
SENSE
allowed before disconnect (DC
disconnect active), V
OUT_
= V
EE
3
4
5
mV
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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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
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