参数资料
型号: LTC4267CDHC#PBF
厂商: Linear Technology
文件页数: 28/32页
文件大小: 0K
描述: IC POE 802.3AF INTERFACE 16-DFN
产品培训模块: Power over Ethernet
标准包装: 73
控制器类型: 以太网供电控制器(POE)
接口: IEEE 802.3af
电流 - 电源: 3mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 16-WFDFN 裸露焊盘
供应商设备封装: 16-DFN(5x3)
包装: 管件
相关产品: 732-2437-6-ND - TRANS FLYBACK POE 40UH SMD
732-2436-6-ND - TRANS FLYBACK POE 35UH SMD
732-2435-6-ND - TRANS FLYBACK POE 127UH SMD
732-2434-6-ND - TRANS FLYBACK POE 127UH SMD
732-2433-6-ND - TRANS FLYBACK POE 127UH SMD
732-2432-6-ND - TRANS FLYBACK POE 127UH SMD
732-2431-6-ND - TRANS FLYBACK POE 127UH SMD
732-2430-6-ND - TRANS FLYBACK POE 127UH SMD
732-2437-1-ND - TRANS FLYBACK POE 40UH SMD
732-2436-1-ND - TRANS FLYBACK POE 35UH SMD
更多...
LTC4267
5
4267fc
Input Current vs Input Voltage
25k Detection Range
Input Current vs Input Voltage
Signature Resistance vs
Input Voltage
Normalized UVLO Threshold vs
Temperature
Power Good Output Low Voltage
vs Current
POUT Leakage Current
Current Limit vs Input Voltage
TYPICAL PERFOR
UW
CE CHARACTERISTICS
A
VPORTN VOLTAGE (V)
0
INPUT
CURRENT
(mA)
0.1
0.2
0.3
0.4
0.5
–2
–4
–6
–8
4267 G01
–10
TA = 25°C
VPORTN VOLTAGE (V)
–12
9.0
INPUT
CURRENT
(mA)
9.5
10.5
11.0
11.5
–14
–16
4267 G03
10.0
–18
–20
–22
12.0
85°C
–40°C
CLASS 1 OPERATION
VPORTN VOLTAGE (V)
0
INPUT
CURRENT
(mA)
10
20
30
40
50
–10
–20
–30
–40
4267 G02
–50
–60
CLASS 4
CLASS 3
CLASS 2
CLASS 1
CLASS 0
TA = 25°C
VPORTN VOLTAGE (V)
0
INPUT
CURRENT
(mA)
1
2
3
–45
–55
4267 G04
–60
–40
–50
EXCLUDES ANY LOAD CURRENT
TA = 25°C
VPORTN VOLTAGE (V)
–1
22
V1:
V2:
SIGNATURE
RESISTANCE
(k
)
23
25
26
27
–3
–5
4267 G05
24
–7
–9
–6
–10
–2
–4
–8
28
RESISTANCE =
DIODES: S1B
TA = 25C
=
V
I
V2 – V1
I2 – I1
IEEE UPPER LIMIT
IEEE LOWER LIMIT
LTC4267 + 2 DIODES
LTC4267 ONLY
CURRENT (mA)
0
V
PG_OUT
(V)
2
3
8
4267 G07
1
0
2
4
6
10
4
TA = 25°C
POUT PIN VOLTAGE (V)
0
V
OUT
CURRENT
(A)
30
60
120
90
20
40
4267 G08
60
VIN = 0V
TA = 25°C
VPORTN VOLTAGE (V)
–40
CURRENT
LIMIT
(mA)
200
–60
4267 G09
100
–45
–50
–55
400
300
85°C
– 40°C
HIGH CURRENT MODE
LOW CURRENT MODE
TEMPERATURE (C)
–40
–2
NORMALIZED
UVLO
THRESHOLD
(%)
–1
0
1
2
–20
0
20
40
4267 G06
60
80
APPLICABLE TO TURN-ON
AND TURN-0FF THRESHOLDS
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