VCUT Overcurrent Sense Vol" />
參數(shù)資料
型號(hào)： LTC4266IGW#PBF
廠商： Linear Technology
文件頁(yè)數(shù)： 25/30頁(yè)
文件大?。?/td> 0K
描述： IC CTRLR IEEE 802.3AT 36-SSOP
產(chǎn)品培訓(xùn)模塊： Power over Ethernet
標(biāo)準(zhǔn)包裝： 32
控制器類(lèi)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(lèi)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(yè)面： 1338 (CN2011-ZH PDF)
LTC4266
4
4266fd
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Current Sense
VCUT
Overcurrent Sense Voltage
VSENSEn – VEE, icut12 = icut34 = hpen = 00h
hpen = 0Fh, cutn[5:0] ≥ 4 (Note 12)
cutrng = 0
cutrng = 1
l
180
9
4.5
188
9.38
4.69
196
9.75
4.88
mV
mV/LSB
Overcurrent Sense in AUTO pin mode
Class 0, Class 3
Class 1
Class 2
Class 4
l
90
26
49
152
94
28
52
159
98
30
55
166
mV
VLIM
Active Current Limit in 802.3af Compliant
Mode
VSENSEn – VEE, dblpwr = hpen = 00h
VEE = 55V (Note 12)
VEE < VOUT < AGND – 29V
AGND – VOUT = 0V
l
204
40
212
220
100
mV
VLIM
Active Current Limit in High Power Mode
hpen = 0Fh, limn = C0h, VEE = 55V
VOUT – VEE = 0V to 10V
VEE + 23V < VOUT < AGND – 29V
AGND – VOUT = 0V
l
204
100
20
212
106
221
113
50
mV
VLIM
Active Current Limit in AUTO pin mode
VOUT – VEE = 0V to 10V, VEE = 55V
Class 0 to Class 3
Class 4
l
102
204
106
212
110
221
mV
VMIN
DC Disconnect Sense Voltage
VSENSEn – VEE, rdis = 0
VSENSEn – VEE, rdis = 1
l
2.6
1.3
3.8
1.9
4.8
2.41
mV
VSC
Short-Circuit Sense
VSENSEn – VEE – VLIM, rdis = 0
VSENSEn – VEE – VLIM, rdis = 1
l
160
75
200
100
255
135
mV
Port Current ReadBack
Resolution
No missing codes, fast_iv = 0
14
bits
LSB Weight
VSENSEn – VEE
30.5
μV/LSB
50-60Hz Noise Rejection
(Note 7)
30
dB
Port Voltage ReadBack
Resolution
No missing codes, fast_iv = 0
14
bits
LSB Weight
AGND – VOUTn
5.835
mV/LSB
50-60Hz noise rejection
(Note 7)
30
dB
Digital Interface
VILD
Digital Input Low Voltage
ADn, SHDNn, RESET, MSD, AUTO,
MID (Note 6)
l
0.8
V
I2C Input Low Voltage
SCL, SDAIN (Note 6)
l
0.8
V
VIHD
Digital Input High Voltage
(Note 6)
l
2.2
V
Digital Output Low Voltage
ISDAOUT = 3mA, IINT = 3mA
ISDAOUT = 5mA, IINT = 5mA
l
0.4
0.7
V
Internal Pull-Up to VDD
ADn, SHDNn, RESET, MSD
50
kΩ
Internal Pull-Down to DGND
AUTO, MID
50
kΩ
ELECTRICAL CHARACTERISTICS 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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