LTC4266CUHF-PBF View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC4266CUHF-PBF Datasheet PDF : 30 Pages
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LTC4266
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)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Current Sense
VCUT
Overcurrent Sense Voltage
VSENSEn – VEE, icut12 = icut34 = hpen = 00h l 180
188
196
mV
hpen = 0Fh, cutn[5:0] ≥ 4 (Note 12)
cutrng = 0
l9
9.38 9.75 mV/LSB
cutrng = 1
l 4.5
4.69 4.88 mV/LSB
Overcurrent Sense in AUTO pin mode
Class 0, Class 3
Class 1
Class 2
Class 4
l 90
94
98
mV
l 26
28
30
mV
l 49
52
55
mV
l 152
159
166
mV
VLIM
Active Current Limit in 802.3af Compliant VSENSEn – VEE, dblpwr = hpen = 00h
Mode
VEE = 55V (Note 12)
VEE < VOUT < AGND – 29V
l 204
212
220
mV
AGND – VOUT = 0V
l 40
100
mV
VLIM
Active Current Limit in High Power Mode hpen = 0Fh, limn = C0h, VEE = 55V
VOUT – VEE = 0V to 10V
l 204
212
221
mV
VEE + 23V < VOUT < AGND – 29V
l 100
106
113
mV
AGND – VOUT = 0V
l 20
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
106
110
mV
l 204
212
221
mV
VMIN
DC Disconnect Sense Voltage
VSC
Short-Circuit Sense
Port Current ReadBack
VSENSEn – VEE, rdis = 0
VSENSEn – VEE, rdis = 1
VSENSEn – VEE – VLIM, rdis = 0
VSENSEn – VEE – VLIM, rdis = 1
l 2.6
3.8
4.8
mV
l 1.3
1.9
2.41
mV
l 160
200
255
mV
l 75
100
135
mV
Resolution
No missing codes, fast_iv = 0
14
bits
LSB Weight
50-60Hz Noise Rejection
VSENSEn – VEE
(Note 7)
30.5
µV/LSB
30
dB
Port Voltage ReadBack
Resolution
No missing codes, fast_iv = 0
14
bits
LSB Weight
50-60Hz noise rejection
AGND – VOUTn
(Note 7)
5.835
30
mV/LSB
dB
Digital Interface
VILD
Digital Input Low Voltage
VIHD
Digital Input High Voltage
Digital Output Low Voltage
Internal Pull-Up to VDD
Internal Pull-Down to DGND
(Note 6)
(Note 6)
ISDAOUT = 3mA, IINT = 3mA
ISDAOUT = 5mA, IINT = 5mA
ADn, SHDNn, RESET, MSD
AUTO, MID
l
0.8
V
l 2.2
V
l
0.4
V
l
0.7
V
50
kΩ
50
kΩ
4266fb
4
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