參數(shù)資料
型號(hào)： LTC4270BIUKG#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQCC52
封裝： 8 X 7 MM, LEAD FREE, PLASTIC, QFN-52
文件頁(yè)數(shù)： 27/32頁(yè)
文件大?。?/td> 344K
代理商： LTC4270BIUKG#PBF
LTC4270/LTC4271
4
42701fa
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VEE
Main PoE Supply Voltage
AGND – VEE
For IEEE Type 1 Compliant Output
For IEEE Type 2 Compliant Output
For LTPoE++ Compliant Output
l
45
51
54.75
57
V
Undervoltage Lock-Out
AGND – VEE
l
20
25
30
V
VDD
VDD Supply Voltage
VDD – DGND
l
3.0
3.3
3.6
V
Undervoltage Lock-Out
VDD – DGND
l
2.7
V
VCAP1
Internal Regulator Supply Voltage
VCAP1 – DGND
1.84
V
VCAP2
Internal Regulator Supply Voltage
VCAP2 – VEE
4.3
V
IEE
VEE Supply Current
(AGND – VEE) = 55V
l
915
mA
REE
VEE Supply Resistance
VEE < 15V
l
12
kΩ
IDD
VDD Supply Current
(VDD – DGND) = 3.3V
l
10
15
mA
Detection
Detection Current – Forced Current First Point, AGND – VOUTn = 9V
Second Point, AGND – VOUTn = 3.5V
l
220
143
240
160
260
180
μA
Detection Voltage – Forced 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 ≤ IOUTn ≤ 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 ≤ 5mA
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 – VOUT) ≤ 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 and VDD – DGND = 3.3V unless otherwise noted.
(Notes 3 & 4)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4270CIUKG#PBF 制造商:Linear Technology 功能描述:POE Controller 13W 52-Pin QFN EP 制造商:Linear Technology 功能描述:IC POE LTPOE 12-PORT PSE 52-QFN 制造商:Linear Technology 功能描述:PSE CNTRL 12 PORT 13W 1MHZ 制造商:Linear Technology 功能描述:IC PSE CONTROLLER 3.3V QFN-52 制造商:Linear Technology 功能描述:IC, PSE CONTROLLER, 3.3V, QFN-52; Input Voltage:3.3V; Supply Current:10mA; UVLO:25V; Digital IC Case Style:QFN; No. of Pins:52; Frequency:1MHz; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:52-QFN ;RoHS Compliant: Yes
LTC4270CIUKG#PBF 制造商:Linear Technology 功能描述:IC PSE CONTROLLER 3.3V QFN-52 制造商:Linear Technology 功能描述:IC, PSE CONTROLLER, 3.3V, QFN-52
LTC4270CIUKG#TRPBF 制造商:Linear Technology 功能描述:POE Controller 13W 52-Pin QFN EP 制造商:Linear Technology 功能描述:PSE CONTROLLER, 12PORT, 57V, QFN-52; Supply Current:10mA; UVLO:25V; Digital IC Case Style:QFN; No. of Pins:52; Duty Cycle (%):6.3%; Frequency:1MHz; Operating Temperature Min:-40C; Operating Temperature Max:85C ;RoHS Compliant: Yes
LTC4271 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Single PoE/PoE/LTPoE PSE Controller
LTC4271IUF#PBF 制造商:Linear Technology 功能描述:POE Controller 90W 24-Pin QFN EP 制造商:Linear Technology 功能描述:Bulk 制造商:Linear Technology 功能描述:IC POE 12-/8-PORT PSE 24-QFN 制造商:Linear Technology 功能描述:IC PSE CONTROLLER 3.3V QFN-24 制造商:Linear Technology 功能描述:IC, PSE CONTROLLER, 3.3V, QFN-24 制造商:Linear Technology 功能描述:IC, PSE CONTROLLER, 3.3V, QFN-24; Input Voltage:3.3V; Supply Current:10mA; UVLO:25V; Digital IC Case Style:QFN; No. of Pins:24; Frequency:1MHz; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:24-QFN ;RoHS Compliant: Yes
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