ltc4269cdkd-2 Linear Technology Corporation, ltc4269cdkd-2 Datasheet - Page 6

• Manufacturer Part Number: ltc4269cdkd-2
• Description: Ieee 802.3at High Power Pd And Synchronous Forward Controller With Aux Support
• Manufacturer: Linear Technology Corporation

LTC4269-2
TYPICAL PERFORMANCE CHARACTERISTICS
6
V1:
V2:
0.2
0.5
0.4
0.3
0.2
0.1
0.8
0.6
0.4
26
24
22
28
27
25
23
0
0
0
2
Input Current vs Input Voltage
25k Detection Range
0
Signature Resistance
vs Input Voltage
1
PWRGD, T2P Output Low Voltage
vs Current
RESISTANCE =
DIODES: HD01
T
T
LTC4269-2 ONLY
T
A
A
A
= 25°C
= 25°C
= 25°C
2
2
3
4
LTC4269-2 + 2 DIODES
V
V
PORTP
PORTP
CURRENT (mA)
V
4
4
I
=
5
6
VOLTAGE (V)
VOLTAGE (V)
V2 – V1
IEEE LOWER LIMIT
IEEE UPPER LIMIT
I
2
– I
1
6
6
7
8
8
8
42692 G07
42692 G01
10
42692 G04
9
10
10
10mA/DIV
CURRENT
VOLTAGE
10V/DIV
V
CLASS
INPUT
PORTP
1.0
0.8
0.6
0.4
0.2
50
40
30
20
10
0
0
Input Current vs Input Voltage
0
Class Operation vs Time
Active High PWRGD Output Low
Voltage vs Current
0
T
T
V
A
A
PORTP
= 25°C
= 25°C
10
V
– V
PORTP
0.5
NEG
20
CLASS 2
CLASS 1
CLASS 4
CLASS 3
TIME (10μs/DIV)
CLASS 0
CURRENT (mA)
VOLTAGE RISING (V)
= 4V
30
1
40
1.5
T
A
50
= 25°C
42692 G05
42692 G02
42692 G08
60
2
1.23
10.5
10.0
1.25
1.24
1.22
1.21
1.20
11.0
1.2
1.0
0.2
9.5
0.8
0.6
0.4
–50
–50
12
Input Current vs Input Voltage
On-Resistance vs Temperature
FB Voltage vs Temperature
CLASS 1 OPERATION
–25
–25
JUNCTION TEMPERATURE (°C)
14
0
V
TEMPERATURE (°C)
PORTP
0
16
25
–40°C
85°C
VOLTAGE (V)
25
50
18
50
75
20
75
100
42692 G06
42692 G09
42692 G03
42692f
125
100
22