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LT1952IGN Datenblatt(PDF) 6 Page - Linear Technology

Teilenummer LT1952IGN
Bauteilbeschribung  Single Switch Synchronous Forward Controller
PDF  24 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1952IGN Datenblatt(HTML) 6 Page - Linear Technology

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LT1952
6
1952f
TYPICAL PERFOR A CE CHARACTERISTICS
COMP Source Current vs
Temperature
COMP Sink Current vs
Temperature
(Disabled) COMP Pin Current vs
Temperature
ISENSE Maximum Threshold vs
COMP
ISENSE Maximum Threshold vs
Temperature
ISENSE Pin Current (Out of Pin) vs
Duty Cycle
ISENSE Maximum Threshold vs
Duty Cycle (Programming Slope
Compensation)
OC (Over-Current) Threshold vs
Temperature
Blank Duration vs Temperature
TEMPERATURE (°C)
–50
5.0
12.5
0
50
75
1952 G10
10.0
7.5
–25
25
100
125
CURRENT OUT OF PIN
FB = 1V
COMP = 1.6V
TEMPERATURE (°C)
–50
5.0
12.5
0
50
75
1952 G11
10.0
7.5
–25
25
100
125
FB = 1.4V
COMP = 1.6V
TEMPERATURE (°C)
–50
0
50
40
30
0
50
75
1952 G12
10
20
–25
25
100
125
FB = VREF
COMP = 1.6V
COMP (V)
0
0
240
160
200
120
1.0
2.0
2.5
1952 G13
40
80
0.5
1.5
3.0
TA = 25°C
RISENSE = 0k
OC THRESHOLD
DUTY CYCLE (%)
0
0
10
40
20
50 60
1952 G15
30
20
10
30 40
80
70
90 100
TA = 25°C
TEMPERATURE (°C)
–50
200
210
240
0
50
75
1952 G14
230
220
–25
25
100
125
COMP = 2.5V
RISENSE = 0k
DUTY CYCLE (%)
0
175
185
195
225
20
50 60
1952 G16
215
205
10
30 40
80
70
90 100
RSLOPE = 1k
RSLOPE = 470Ω
RSLOPE = 0Ω
TA = 25°C
COMP = 2.5V
TEMPERATURE (°C)
–50
80
90
120
0
50
75
1952 G17
110
100
–25
25
100
125
PRECISION OVER-CURRENT THRESHOLD
INDEPENDENT OF DUTY CYCLE
TEMPERATURE (°C)
–50
0
200
800
0
50
75
1952 G18
600
400
–25
25
100
125
RBLANK = 40k
RBLANK = 120k



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