參數(shù)資料
型號(hào)： LTC4270AIUKG#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 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)： 31/32頁(yè)
文件大?。?/td> 344K
代理商： LTC4270AIUKG#TRPBF
LTC4270/LTC4271
8
42701fa
Classification Transient Response
to 40mA Load Step
TYPICAL PERFORMANCE CHARACTERISTICS
Powering Up into a 180μF Load
Classification Current Compliance
VDD Supply Current vs Voltage
VEE Supply Current vs Voltage
802.3af Power On Sequence in
AUTO Pin Mode
802.3at Power On Sequence in
AUTO Pin Mode
Power On Sequence with 10VPP
60Hz Noise
FORCED CURRENT
DETECTION
VEE = –55V
CLASS 3 PD
VEE
50ms/DIV
–60
POR
T
VOL
TAGE
(V)
–10
–20
–30
–40
–50
0
42701 G01
FORCED VOLTAGE
DETECTION
802.3af
CLASSIFICATION
POWER ON
AGND
FORCED CURRENT
DETECTION
VEE = –55V
CLASS 4 PD
VEE
50ms/DIV
–60
POR
T
VOL
TAGE
(V)
–10
–20
–30
–40
–50
0
42701 G02
FORCED VOLTAGE
DETECTION
802.3at
CLASSIFICATION
POWER ON
AGND
50ms/DIV
–25
POR
T
VOL
TAGE
(V)
0
–5
–10
–15
–20
5
42701 G03
FORCED VOLTAGE
DETECTION
802.3af
CLASSIFICATION
POWER ON
PORT OFF
FORCED CURRENT
DETECTION
NORMAL DETECT
DETECT WITH 60Hz NOISE
5ms/DIV
42701 G04
FET ON
FOLDBACK
VEE = –54V
AGND
VEE
0mA
PORT VOLTAGE
20V/DIV
PORT CURRENT
200mA/DIV
GATE VOLTAGE
10V/DIV
425mA
CURRENT LIMIT
LOAD FULLY CHARGED
CLASSIFICATION CURRENT (mA)
42701 G06
020
10
30
40
50
60
70
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
CLASSIFICA
TION
VOL
TAGE
(V)
50μs/DIV
40mA
0mA
42701 G05
–20V
PORT
VOLTAGE
1V/DIV
PORT
CURRENT
20mA/DIV
VDD = 3.3V
VEE = –54V
VDD SUPPLY VOLTAGE (V)
42701 G07
2.7
2.9
2.8
3.0 3.1 3.2 3.3 3.4
3.6
3.5
15.0
12.0
9.0
6.0
3.0
0.0
I DD
SUPPL
Y
CURRENT
(mA)
–40
25°C
85°C
VEE SUPPLY VOLTAGE (V)
42701 G08
–60
–50
–40
–30
–20
9.0
8.5
8.0
7.0
7.5
6.5
6.0
I EE
SUPPL
Y
CURRENT
(mA)
–40
25°C
85°C
相關(guān)PDF資料
PDF描述
LTC4270AIUKG#PBF SPECIALTY ANALOG CIRCUIT, PQCC52
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4270BIUKG#PBF 制造商:Linear Technology 功能描述:POE Controller 25.5W 52-Pin QFN EP 制造商:Linear Technology 功能描述:Bulk 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:IC PSE CONTROLLER 3.3V QFN-52 制造商:Linear Technology 功能描述:PSE CNTRL 12 PORT 25.5W 1M 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
LTC4270BIUKG#PBF 制造商:Linear Technology 功能描述:IC, PSE CONTROLLER, 3.3V, QFN-52
LTC4270BIUKG#TRPBF 制造商:Linear Technology 功能描述:POE Controller 25.5W 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
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
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