lt1725cs-trpbf Linear Technology Corporation, lt1725cs-trpbf Datasheet - Page 5

• Manufacturer Part Number: lt1725cs-trpbf
• Description: General Purpose Isolated Flyback Controller
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
275
250
225
200
175
150
125
–50
Minimum Switch-On Time vs
Temperature
R
TON
–25
= 50k
0
TEMPERATURE (°C)
–20
–40
–60
–80
80
60
40
20
60
50
40
30
20
10
25
0
1.05
0
–50
Feedback Amplifier Output Current
vs FB Pin Voltage
Soft-Start Charging Current vs
Temperature
T
A
50
1.10
= 25°C
–25
75
1.15
FB PIN VOLTAGE (V)
W
0
TEMPERATURE (°C)
100
1.20
25
1725 G10
U
125
T
A
1.25
50
= –55°C
1.30
T
75
V(SFST) = 0V
A
= 125°C
275
250
225
200
175
150
125
1.35
100
–50
1725 G13
Minimum Enable Time vs
Temperature
1725 G15
R
MINENAB
1.40
125
–25
= 50k
0
TEMPERATURE (°C)
25
50
75
1600
1400
1200
1000
800
600
400
200
2.5
2.0
1.5
1.0
0.5
100
0
–50
–50
1725 G11
Feedback Amplifier
Transconductance vs Temperature
Soft-Start Sink Current vs
Temperature
125
–25
–25
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
275
250
225
200
175
150
125
25
25
–50
Enable Delay Time vs
Temperature
50
50
–25
V(SFST) = 1.5V
75
75
0
TEMPERATURE (°C)
100
100
25
1725 G14
1725 G16
125
125
50
LT1725
75
100
1725 G12
1725fa
5
125