ltc4266a Linear Technology Corporation, ltc4266a Datasheet - Page 4

• Manufacturer Part Number: ltc4266a
• Description: Quad Poe/poe+/ltpoe++ Pse Controller
• Manufacturer: Linear Technology Corporation

LTC4266A/LTC4266C
SYMBOL
Current Sense
V
V
V
V
V
V
Port Current ReadBack
Port Voltage ReadBack
Digital Interface
V
V
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
unless otherwise noted. (Notes 3, 4)
4
CUT
LIM
LIM
LIM
MIN
SC
ILD
IHD
PARAMETER
Overcurrent Sense Voltage
Overcurrent Sense in AUTO Pin Mode
Active Current Limit in 802.3af Compliant
Mode
Active Current Limit in High Power Mode
Active Current Limit in AUTO Pin Mode
DC Disconnect Sense Voltage
Short-Circuit Sense
Resolution
LSB Weight
50Hz to 60Hz Noise Rejection
Resolution
LSB Weight
50Hz to 60Hz Noise Rejection
Digital Input Low Voltage
I
Digital Input High Voltage
Digital Output Low Voltage
Internal Pull-Up to V
Internal Pull-Down to DGND
2
C Input Low Voltage
DD
A
CONDITIONS
V
Class 0, Class 3
Class 1
Class 2
Class 4
V
V
hpen = 0Fh, limn = C0h, V
V
V
V
V
V
No Missing Codes, fast_iv = 0
V
(Note 7)
No Missing Codes, fast_iv = 0
AGND – V
(Note 7)
ADn, RESET, MSD, SHDNn, AUTO, MID
(Note 6)
SCL, SDAIN (Note 6)
(Note 6)
I
I
ADn, SHDNn, RESET, MSD
AUTO, MID
= 25°C. AGND – V
SDAOUT
SDAOUT
SENSEn
SENSEn
EE
OUT
SENSEn
SENSEn
SENSEn
SENSEn
SENSEn
hpen = 0Fh, cutn[5:0] ≥ 4 (Note 12)
V
AGND – V
V
V
AGND – V
Class 0 to Class 3
Class 4
= 55V (Note 12)
EE
OUT
EE
– V
cutrng = 0
cutrng = 1
The
< V
+ 23V < V
= 3mA, I
= 5mA, I
– V
– V
– V
– V
– V
– V
– V
EE
– V
OUTn
OUT
= 0V to 10V, V
EE
EE
EE
EE
EE
EE
EE
l
EE
, hpen = 0Fh, limn = 80h,
OUT
OUT
, rdis = 0
, rdis = 1
– V
– V
denotes the specifications which apply over the full operating
< AGND – 29V
= 0V to 10V
INT
INT
OUT
= 0V
= 0V
LIM
LIM
= 3mA
= 5mA
EE
, rdis = 0
, rdis = 1
< AGND – 29V
= 54V, AGND = DGND, and V
EE
EE
= 55V
= 55V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
152
102
204
100
102
204
160
4.5
2.6
1.3
2.2
90
26
49
20
20
75
9
DD
– DGND = 3.3V
5.835
9.38
4.69
30.5
TYP
159
106
212
106
106
212
200
100
3.8
1.9
94
28
52
14
30
14
30
50
50
MAX
9.75
4.88
2.41
166
110
221
113
110
221
255
135
4.8
0.8
1.0
0.4
0.7
98
30
55
50
50
mV/LSB
mV/LSB
mV/LSB
μV/LSB
4266acfa
UNITS
Bits
bits
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
kΩ
kΩ
dB
dB
V
V
V
V
V