LT1725IS Linear Technology, LT1725IS Datasheet - Page 4

• Manufacturer Part Number: LT1725IS
• Description: IC CNTRLR ISOLATD FLYBACK 16SOIC
• Manufacturer: Linear Technology
• Type: Flybackr

Specifications of LT1725IS

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Frequency - Switching: 50kHz ~ 250kHz
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Voltage - Output: -
• Voltage - Input: -
• Power - Output: -

LT1725
TYPICAL PERFOR A CE CHARACTERISTICS
4
16.00
15.75
15.50
15.25
15.00
14.75
14.50
14.25
1.0
0.8
0.6
0.4
0.2
13
12
11
10
0
9
8
–50
–50
1
Supply Current vs Temperature
V
Temperature
V
CC
GATE
–25
–25
Turn-On Voltage vs
vs I
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
SINK
10
I
25
25
SINK
T
A
(mA)
50
50
= 25°C
100
T
A
75
75
= 125°C
T
A
W
= –55°C
100
100
1725 G07
1725 G01
1725 G04
1000
125
U
125
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
6.50
6.25
6.00
5.75
5.50
5.25
5.00
4.75
–1
–2
–3
–4
–5
–6
0
1
0
–50
–50
V
1
V
Temperature
UVLO Pin Input Current vs
Temperature
CC
CC
T
–25
A
–25
-V
Hysteresis Voltage vs
= –55°C
GATE
T
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
A
vs I
10
= 25°C
V
V
I
UVLO
SOURCE
UVLO
25
25
SOURCE
= 1.2V
= 1.3V
50
50
(mA)
100
75
75
T
A
= 125°C
100
100
1725 G02
1725 G05
1725 G08
1000
125
125
250
200
150
100
115
110
105
100
3.0
2.5
2.0
1.5
1.0
0.5
95
90
85
50
0
0
–50
–50
–50
V
Threshold vs Temperature
Start-Up Current vs Temperature
Oscillator Frequency vs
Temperature
C
SWITCHING THRESHOLD
Clamp Voltage, Switching
–25
–25
–25
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
CLAMP VOLTAGE
50
50
50
75
75
75
100
100
100
1725 G03
1725 G06
1725 G09
1725fa
125
125
125