ltc4269cdkd-2 Linear Technology Corporation, ltc4269cdkd-2 Datasheet - Page 7

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

TYPICAL PERFORMANCE CHARACTERISTICS
245
230
215
200
185
170
155
6.5
6.0
5.5
5.0
4.5
4.0
3.5
18
16
14
12
10
8
6
–50
–50
–50
Switching Frequency vs
Temperature
I
V
Temperature
Q
OC = OPEN
IN
(V
–25
–25
Turn On/Off Voltage vs
–25
IN
) vs Temperature
V
V
IN
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
IN
TEMPERATURE (°C)
TURN OFF VOLTAGE
TURN ON VOLTAGE
25
25
25
50
50
50
75
75
75
100
100
100
42692 G10
42692 G13
42692 G16
125
125
125
1.32
1.22
1.42
1.37
1.27
250
100
500
450
400
350
300
200
150
0.6
1.6
1.4
1.2
1.0
0.8
0.4
0.2
0
–50
–50
–50
V
Temperature
SD_V
Temperature
COMP Active Threshold vs
Temperature
V
SD_V
R
IN
IN
ISENSE
–25
–25
= 15V
–25
Shutdown Current vs
SEC
SEC
= 0k
= 0V
Turn On Threshold vs
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
50
50
50
75
75
75
100
100
100
42692 G11
42692 G14
42692 G17
125
125
125
12.5
10.0
600
550
500
450
400
350
300
250
200
7.5
5.0
15
10
5
0
–50
–50
–50
V
Temperature
SD_V
Temperature
COMP Source Current vs
Temperature
SD_V
FB = 1V
COMP = 1.6V
IN
–25
–25
–25
Start-Up Current vs
SEC
SEC
= 1.4V
Pin Current vs
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
LTC4269-2
CURRENT OUT OF PIN
0mA PIN CURRENT AFTER
PART TURN ON
PIN CURRENT BEFORE
PART TURN ON
25
25
25
50
50
50
75
75
75
100
100
100
42692 G12
42692 G18
42692 G15
42692f
7
125
125
125