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參數(shù)資料
| 型號： | MAX5942B |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | IEEE 802.3af Power-Over-Ethernet Interface/PWM Controller for Power Devices |
| 中文描述： | IEEE 802.3af以太網(wǎng)供電接口/PWM控制器，適用于用電設(shè)備 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大?。?/td> | 465K |
| 代理商： | MAX5942B |
M
IEEE 802.3af Power-Over-Ethernet
Interface/PWM Controller for Power Devices
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)
RCL, GATE.............................................................-0.3V to +12V
UVLO........................................................................-0.3V to +8V
PGOOD to OUT.........................................-0.3V to (GND + 0.3V)
V+ to V-...................................................................-0.3V to +80V
V
DD
to V-.................................................................-0.3V to +40V
V
CC
to V-..............................................................-0.3V to +12.5V
FB, NDRV, SS_
SHDN
, CS to V-..................-0.3V to (V
CC
+ 0.3V)
Maximum Input/Output Current (continuous)
OUT to V
EE
...................................................................500mA
GND, RCL to V
EE
............................................................70mA
ELECTRICAL CHARACTERISTICS
(V
IN
= (GND - V
EE
) = 48V, GATE =
PGOOD
= PGOOD = OPEN, V- tied to OUT, V+ tied to GND, UVLO = V
EE
, T
A
= T
MIN
to T
MAX
,
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
V
DD
, V
CC
.........................................................................20mA
NDRV Continuous...........................................................25mA
NDRV (pulsed for less than 1μs).......................................±1A
Continuous Power Dissipation (T
A
= +70°C)
16-Pin SO (derate 9.1mW/°C above +70°C)................727mW
Operating Temperature Ranges
MAX5942_CSE...................................................0°C to +70°C
MAX5942_ESE................................................-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
PD INTERFACE
DETECTION MODE
Input Offset Current
I
OFFSET
V
IN
= 1.4V to 10.1V (Note 2)
V
IN
= 1.4V up to 10.1V with 1V step,
OUT =
PGOOD
= GND (Note 3)
10
μA
Effective Differential Input
Resistance
dR
550
k
CLASSIFICATION MODE
Classification Current Turn-Off
Threshold
V
TH,CLSS
V
IN
rising (Note 4)
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
I
CLASS
V
IN
= 12.6V
to 20V, R
DISC
= 25.5k
(Notes 5, 6)
mA
POWER MODE
Operating Supply Voltage
Operating Supply Current
Default Power Turn-On Voltage
V
IN
I
IN
V
IN
= (GND - V
EE
)
Measure at GND, not including R
DISC
VIN increasing, UVLO = V
EE
67
1
40.1
V
0.4
38.6
mA
V
V
UVLO,ON
37.4
Default Power Turn-Off Voltage
V
UVLO,OFF
VIN decreasing, UVLO = V
EE
30
V
Default Power Turn-On/Off
Hysteresis
V
HYST,UVLO
7.4
V
External UVLO Programming
Range
V
IN,EX
Set UVLO externally (Note 7)
12
67
V
UVLO External Reference Voltage
V
REF,UVLO
V
UVLO
increasing
2.400
2.460
2.522
V
UVLO External Reference
Voltage Hysteresis
HYST
Ratio to V
REF,UVLO
19.2
20
20.9
%
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| MAX5942BCSE | 功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時間（最大值）:13 ns 關(guān)閉時間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6 |
| MAX5942BCSE+ | 功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af POE Int/PWM 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 |
| MAX5942BCSE+T | 功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af POE Int/PWM 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 |
| MAX5942BCSE-T | 功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時間（最大值）:13 ns 關(guān)閉時間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6 |
| MAX5942BESE | 功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時間（最大值）:13 ns 關(guān)閉時間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6 |
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