AGND – V
參數(shù)資料
型號： LTC4266IGW#PBF
廠商： Linear Technology
文件頁數(shù)： 23/30頁
文件大?。?/td> 0K
描述： IC CTRLR IEEE 802.3AT 36-SSOP
產(chǎn)品培訓模塊： Power over Ethernet
標準包裝： 32
控制器類型： 以太網(wǎng)控制器（IEEE 802.3）
接口： I²C，2 線串口
電源電壓： 3.3V
工作溫度： -40°C ~ 85°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
產(chǎn)品目錄頁面： 1338 (CN2011-ZH PDF)
LTC4266
3
4266fd
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main PoE Supply Voltage
AGND – VEE
For IEEE Type 1 Complaint Output
For IEEE Type 2 Complaint Output
l
45
51
57
V
Undervoltage Lock-out Level
l
20
25
30
V
VDD
VDD Supply Voltage
VDD – DGND
l
3.0
3.3
4.3
V
Undervoltage Lock-out
l
2.2
V
Allowable Digital Ground Offset
DGND – VEE
l
25
57
V
IEE
VEE Supply Current
(AGND – VEE) = 55V
l
–2.4
–5
mA
IDD
VDD Supply Current
(VDD – DGND) = 3.3V
l
1.1
3
mA
Detection
Detection Current – Force Current
First Point, AGND – VOUTn = 9V
Second Point, AGND – VOUTn = 3.5V
l
220
140
240
160
260
180
μA
Detection Voltage – Force Voltage
AGND – VOUTn, 5μA ≤ IOUTn ≤ 500μA
First Point
Second Point
l
7
3
8
4
9
5
V
Detection Current Compliance
AGND – VOUTn = 0V
l
0.8
0.9
mA
VOC
Detection Voltage Compliance
AGND – VOUTn, Open Port
l
10.4
12
V
Detection Voltage Slew Rate
AGND – VOUTn, CPORT = 0.15μF
l
0.01
V/μs
Min. Valid Signature Resistance
l
15.5
17
18.5
kΩ
Max. Valid Signature Resistance
l
27.5
29.7
32
kΩ
Classification
VCLASS
Classification Voltage
AGND – VOUTn, 0mA ≤ ICLASS ≤ 50mA
l
16.0
20.5
V
Classification Current Compliance
VOUTn = AGND
l
53
61
67
mA
Classification Threshold Current
Class 0 – 1
Class 1 – 2
Class 2 – 3
Class 3 – 4
Class 4 – Overcurrent
l
5.5
13.5
21.5
31.5
45.2
6.5
14.5
23
33
48
7.5
15.5
24.5
34.9
50.8
mA
VMARK
Classification Mark State Voltage
AGND – VOUTn, 0.1mA ≤ ICLASS ≤ 10mA
l
7.5
9
10
V
Mark State Current Compliance
VOUTn = AGND
l
53
61
67
mA
Gate Driver
GATE Pin Pull-Down Current
Port Off, VGATEn = VEE + 5V
Port Off, VGATEn = VEE + 1V
l
0.4
0.08
0.12
mA
GATE Pin Fast Pull-Down Current
VGATEn = VEE + 5V
30
mA
GATE Pin On Voltage
VGATEn – VEE, IGATEn = 1μA
l
812
14
V
Output Voltage Sense
VPG
Power Good Threshold Voltage
VOUTn – VEE
l
2
2.4
2.8
V
OUT Pin Pull-Up Resistance to AGND
0V ≤ (AGND – VOUTn) ≤ 5V
l
300
500
700
kΩ
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. AGND – VEE = 54V, AGND = DGND, and VDD – DGND = 3.3V unless
otherwise noted. (Notes 3, 4)
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