LTC3901 Linear Technology, LTC3901 Datasheet - Page 4

• Manufacturer Part Number: LTC3901
• Description: Secondary Side Synchronous Driver for Push-Pull and Full-Bridge Converters
• Manufacturer: Linear Technology

LTC3901
4
TYPICAL PERFOR A CE CHARACTERISTICS
–1.0
–1.1
–1.2
–1.3
–1.4
–1.5
–1.6
–1.7
–1.8
120
110
100
90
80
70
60
50
40
–50
1
SYNC Negative Threshold vs
Temperature
Propagation Delay vs C
V
T
V
SYNC TO ME
CC
A
CC
–25
= 25°C
2
= 5V, 11V
= 5V
3
0
TEMPERATURE (°C)
4
C
25
LOAD
5
50
45
40
35
30
25
20
15
10
5
0
Rise/Fall Time vs Load
Capacitance
0
(nF)
6
50
T
V
A
CC
1
= 25°C
7
SYNC TO MF
= 5V
75
LOAD
2
8
W
3
100
RISE TIME
9
3901 G07
3901 G10
4
C
LOAD
125
10
U
5
(nF)
6
FALL TIME
7
120
110
100
90
80
70
60
50
40
50
45
40
35
30
25
20
15
10
8
5
0
4
4
Rise/Fall Time vs V
Propagation Delay vs V
T
C
T
C
9
3901 G13
A
A
LOAD
LOAD
= 25°C
= 25°C
5
5
10
FALL TIME
= 4.7nF
= 4.7nF
SYNC TO MF
6
6
7
7
V
V
CC
CC
(V)
(V)
8
RISE TIME
8
CC
SYNC TO ME
CC
9
9
10
10
4.5
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
3.0
3901 G08
3901 G11
–50
Undervoltage Lockout Threshold
Voltage vs Temperature
11
11
–25
RISING EDGE
FALLING EDGE
0
TEMPERATURE (°C)
120
110
100
90
80
70
60
50
40
50
45
40
35
30
25
20
15
10
5
0
–50
–50
25
Propagation Delay vs
Temperature
Rise/Fall Time vs Temperature
V
C
V
C
CC
LOAD
CC
LOAD
SYNC TO ME
RISE TIME
–25
–25
50
= 5V
= 5V
= 4.7nF
= 4.7nF
75
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
100
25
25
3901 G14
125
50
50
FALL TIME
75
SYNC TO MF
75
100
100
3901 G09
3901 G12
3901f
125
125