LTC4269-1 Linear Technology Corporation, LTC4269-1 Datasheet - Page 6

• Manufacturer Part Number: LTC4269-1
• Description: IEEE 802.3 At PD And Synchronous No-Opto Flyback Controller
• Manufacturer: Linear Technology Corporation

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LTC4269-1
TYPICAL PERFORMANCE CHARACTERISTICS
6
V1:
V2:
0.8
0.4
0.2
0.5
0.4
0.3
0.2
0.1
0.6
28
26
25
24
22
27
23
0
0
2
0
1
0
Input Current vs Input Voltage
25k Detection Range
Signature Resistance
vs Input Voltage
PWRGD, T2P Output Low Voltage
vs Current
RESISTANCE =
DIODES: HD01
T
LTC4269-1 ONLY
T
T
A
A
A
= 25°C
= 25°C
= 25°C
2
2
3
4
LTC4269-1 + 2 DIODES
V
V
PORTP
PORTP
CURRENT (mA)
V
4
4
I
=
5
6
VOLTAGE (V)
VOLTAGE (V)
V2 – V1
IEEE LOWER LIMIT
I
IEEE UPPER LIMIT
2
– I
1
6
6
7
8
8
8
10
42691 G04
42691 G07
42691 G01
9
10
10
10mA/DIV
CURRENT
VOLTAGE
10V/DIV
V
CLASS
PORTP
0.6
1.0
0.8
0.4
0.2
50
40
30
20
10
0
0
Input Current vs Input Voltage
0
0
Class Operation vs Time
Active High PWRGD
Output Low Voltage vs Current
T
T
V
A
A
PORTP
= 25°C
= 25°C
10
– V
0.5
V
NEG
20
PORTP
CLASS 4
CLASS 3
CLASS 2
CLASS 1
CLASS 0
TIME (10μs/DIV)
CURRENT (mA)
= 4V
(RISING)
VOLTAGE (V)
30
1
40
1.5
T
A
50
= 25°C
42691 G02
42691 G05
42691 G08
60
2
10.5
10.0
115
105
105
100
100
11.0
110
110
1.0
0.2
0.8
0.6
0.4
85
9.5
95
95
90
90
–50
40
12
Input Current vs Input Voltage
On-Resistance vs Temperature
Inrush Current vs Input Voltage
CLASS 1 OPERATION
–25
JUNCTION TEMPERATURE (°C)
14
45
V
V
PORTP
PORTP
0
16
VOLTAGE (V)
85°C
–40°C
VOLTAGE (V)
50
25
18
50
55
20
75
42691 G09
42691 G06
42691 G03
42691f
100
60
22