參數(shù)資料
型號(hào)： MAX5940B
廠商： Maxim Integrated Products, Inc.
英文描述： IEEE 802.3af PD Interface Controller For Power-Over-Ethernet
中文描述： IEEE 802.3af PD接口控制器，用于以太網(wǎng)供電
文件頁(yè)數(shù)： 2/15頁(yè)
文件大小： 295K
代理商： MAX5940B
M
IEEE 802.3af PD Interface Controller
For Power-Over-Ethernet
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
(All voltages are referenced to V
EE
, unless otherwise noted.)
GND........................................................................-0.3V to +80V
OUT,
PGOOD
...........................................-0.3V to (GND + 0.3V)
RCLASS, GATE ......................................................-0.3V to +12V
UVLO........................................................................-0.3V to +8V
PGOOD to OUT.........................................-0.3V to (GND + 0.3V)
Maximum Input/Output Current (continuous)
OUT to V
EE
...................................................................500mA
GND, RCLASS to V
EE
.....................................................70mA
ELECTRICAL CHARACTERISTICS
(V
IN
= (GND - V
EE
) = 48V, GATE =
PGOOD
= PGOOD = OUT = OPEN, UVLO = V
EE
, T
A
= -40
°
C to +85
°
C, unless otherwise noted.
Typical values are at T
A
= +25
°
C. All voltages are referenced to V
EE
, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
UVLO,
PGOOD
, PGOOD to V
EE
.....................................20mA
GATE to V
EE
....................................................................80mA
Continuous Power Dissipation (T
A
= +70
°
C)
8-Pin SO (derate 5.9mW/
°
C above +70
°
C)..................470mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Junction Temperature......................................................+150
°
C
Lead Temperature (soldering, 10s) ................................+300
°
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DETECTION MODE
Input Offset Current (Note 2)
I
OFFSET
V
IN
= 1.4V to 10.1V
V
IN
= 1.4V up to 10.1V with 1V step,
OUT =
PGOOD
= GND
10
μA
Effective Differential Input
Resistance (Note 3)
dR
550
k
CLASSIFICATION MODE
Classification Current Turn-Off
Threshold (Note 4)
V
TH,CLSS
V
IN
rising
20.8
21.8
22.5
V
Class 0, R
CL
= 10k
Class 1, R
CL
= 732
Class 2, R
CL
= 392
Class 3, R
CL
= 255
Class 4, R
CL
= 178
0
2
9.17
17.29
26.45
36.6
11.83
19.71
29.55
41.4
Classification Current (Notes 5, 6)
I
CLASS
V
IN
= 12.6V to
20V, R
DISC
=
25.5k
mA
POWER MODE
Operating Supply Voltage
Operating Supply Current
V
IN
I
IN
V
IN
= (GND - V
EE
)
Measure at GND, not including R
DISC
MAX5940A
V
IN
increasing
MAX5940B, UVLO = V
EE
V
IN
decreasing, UVLO = V
EE for
MAX5940B
67
1
36.6
39.9
V
0.4
35.4
38.6
mA
34.3
37.4
Default Power Turn-On Voltage
V
UVLO, ON
V
Default Power Turn-Off Voltage
V
UVLO, OFF
30
V
MAX5940A
MAX5940B, UVLO = V
EE
Set UVLO externally (MAX5940B only)
(Note 7)
4.2
7.4
Default Power Turn-On/Off
Hysteresis
V
HYST,
UVLO
V
External UVLO Programming
Range
V
IN,EX
12
67
V
UVLO External Reference Voltage
V
REF, UVLO
2.400
2.460
2.522
V
UVLO External Reference Voltage
Hysteresis
HYST
Ratio to V
REF,UVLO
19.2
20
20.9
%
UVLO Bias Current
I
UVLO
UVLO = 2.460V
-1.5
+1.5
μA
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參數(shù)描述
MAX5940BCSA+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX5940BCSA+T 制造商:Maxim Integrated Products 功能描述:IEEE 802.3AF PD INTERFACE CONTROLLER FOR POWER-OVER-ETHERNET - Tape and Reel
MAX5940BESA 功能描述:輸入/輸出控制器接口集成電路 RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
MAX5940BESA+ 功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af PD Int Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
MAX5940BESA+T 功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af PD Int Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
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