LTC4265 LINER [Linear Technology], LTC4265 Datasheet - Page 4

• Manufacturer Part Number: LTC4265
• Description: IEEE 802.3at High Power PD Interface Controller with 2-Event Classifi cation Recognition
• Manufacturer: LINER [Linear Technology]

LTC4265
TYPICAL PERFORMANCE CHARACTERISTICS
4
V1:
V2:
0.8
0.6
0.4
0.2
0.5
0.4
0.3
0.2
0.1
28
27
26
25
24
22
23
0
0
0
2
1
0
Input Current vs Input Voltage
25k Detection Range
Signature Resistance
vs Input Voltage
PWRGD, T2PSE Output Low
Voltage vs Current
RESISTANCE =
DIODES: HD01
T
T
T
A
A
A
LTC4265 ONLY
= 25°C
= 25°C
= 25°C
2
2
3
4
GND VOLTAGE (V)
LTC4265 + 2 DIODES
GND VOLTAGE (V)
CURRENT (mA)
V
4
4
I
=
5
6
V2 – V1
IEEE LOWER LIMIT
I
IEEE UPPER LIMIT
2
– I
1
6
6
7
8
8
8
10
9
4265 G04
4265 G07
4265 G01
10
10
CURRENT
10mA/DIV
VOLTAGE
10V/DIV
CLASS
INPUT
1.0
0.8
0.6
0.4
0.2
50
40
30
20
10
0
0
0
0
Input Current vs Input Voltage
Class Operation vs Time
Active High PWRGD
Output Low Voltage vs Current
T
T
GND – V
A
A
= 25°C
= 25°C
10
OUT
0.5
20
GND VOLTAGE (V)
= 4V
CLASS 4
CLASS 3
CLASS 2
CLASS 1
CLASS 0
TIME (10μs/DIV)
CURRENT (mA)
(RISING)
30
1
40
1.5
T
A
50
= 25°C
4265 G02
4265 G08
4265 G05
60
2
11.0
10.5
10.0
115
105
105
110
110
100
100
9.5
1.0
0.8
0.6
0.4
0.2
95
95
85
90
90
–50
12
40
On Resistance vs Temperature
Inrush Current vs Input Voltage
Input Current vs Input Voltage
CLASS 1 OPERATION
–25
JUNCTION TEMPERATURE (°C)
14
45
GND VOLTAGE (V)
GND VOLTAGE (V)
0
16
85°C
–40°C
25
50
18
50
55
20
75
4265 G06
4265 G03
4265 G09
4265f
100
22
60