LTC4266 LINER [Linear Technology], LTC4266 Datasheet - Page 3

• Manufacturer Part Number: LTC4266
• Description: Quad IEEE 802.3at Power over Ethernet Controller
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
otherwise noted. (Notes 3, 4)
SYMBOL
V
I
I
Detection
V
Classification
V
V
Gate Driver
Output Voltage Sense
V
EE
DD
DD
OC
CLASS
MARK
PG
PARAMETER
–48V Supply Voltage
Undervoltage Lock-out Level
V
Undervoltage Lock-out
Allowable Digital Ground Offset
V
V
Detection Current – Force Current
Detection Voltage – Force Voltage
Detection Current Compliance
Detection Voltage Compliance
Detection Voltage Slew Rate
Min. Valid Signature Resistance
Max. Valid Signature Resistance
Classification Voltage
Classification Current Compliance
Classification Threshold Current
Classification Mark State Voltage
Mark State Current Compliance
GATE Pin Pull-Down Current
GATE Pin Fast Pull-Down Current
GATE Pin On Voltage
Power Good Threshold Voltage
OUT Pin Pull-Up Resistance to AGND
DD
EE
DD
Supply Current
Supply Voltage
Supply Current
A
CONDITIONS
AGND – V
For IEEE Type 1 Complaint Output
For IEEE Type 2 Complaint Output
V
DGND – V
(AGND – V
(V
First Point, AGND – V
Second Point, AGND – V
AGND – V
AGND – V
AGND – V
AGND – V
AGND – V
V
Class 0 – 1
Class 1 – 2
Class 2 – 3
Class 3 – 4
Class 4 – Overcurrent
AGND – V
V
Port Off, V
Port Off, V
V
V
V
0V ≤ (AGND – V
= 25°C. AGND – V
DD
OUTn
OUTn
GATEn
GATEn
OUTn
DD
First Point
Second Point
– DGND
– DGND) = 3.3V
– V
= AGND
= AGND
– V
The
= V
EE
EE
EE
OUTn
OUTn
OUTn
OUTn
OUTn
OUTn
GATEn
GATEn
EE
EE
EE
l
, I
) = 55V
+ 5V
, 5µA ≤ I
, Open Port
, C
, 0mA ≤ I
, 0.1mA ≤ I
GATEn
denotes the specifications which apply over the full operating
= 0V
OUTn
= V
= V
PORT
EE
EE
= 1µA
) ≤ 5V
EE
OUTn
= 0.15µF
+ 5V
+ 1V
OUTn
CLASS
= 54V, AGND = DGND, and V
OUTn
CLASS
= 9V
≤ 500µA
= 3.5V
≤ 50mA
≤ 10mA
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
15.5
27.5
16.0
13.5
21.5
31.5
45.2
0.08
220
140
300
3.0
5.5
7.5
0.4
45
51
20
25
53
53
7
3
8
2
DD
– DGND = 3.3V unless
–2.4
10.4
29.7
14.5
0.12
TYP
240
160
500
3.3
2.2
1.1
0.8
6.5
2.4
25
17
61
23
33
48
61
30
8
4
9
LTC4266
MAX
0.01
18.5
20.5
15.5
24.5
34.9
50.8
260
180
700
4.3
0.9
7.5
2.8
57
57
30
57
–5
12
32
67
10
67
14
3
9
5
UNITS
4266fb
3
V/µs
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
kΩ
kΩ
kΩ
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V
V