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LT1952 Datenblatt(PDF) 7 Page - Linear Technology

Teilenummer LT1952
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

LT1952 Datenblatt(HTML) 7 Page - Linear Technology

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LT1952
7
1952f
TYPICAL PERFOR A CE CHARACTERISTICS
tDELAY: SOUT Rise to OUT Rise vs
Temperature
OUT Rise/Fall Time vs OUT Load
Capacitance
OUT: Max Duty Cycle vs fOSC
OUT: Max Duty Cycle CLAMP vs
SD_VSEC
OUT: Max Duty Cycle CLAMP vs
SS_MAXDC
SS_MAXDC Setting vs fOSC
(for OUT DC = 72%)
SS_MAXDC Reset and Active
Thresholds vs Temperature
TEMPERATURE (°C)
–50
0
50
200
0
50
75
1952 G19
150
100
–25
25
100
125
RDELAY = 40k
RDELAY = 120k
OUT LOAD CAPACITANCE (pF)
0
0
50
25
125
2000
3000
100
75
1000
4000
5000
tr
tf
1952 G20
TA = 25°C
fOSC (kHz)
100
70
80
100
200
300
90
400
500
1952 G21
TA = 25°C
SS_MAXDC = 2.5V
SD_VSEC = 1.4V
SD_VSEC (V)
1.32
0
70
80
90
1.65
1.98
60
50
40
30
20
10
2.31
2.64
1952 G22
TA = 25°C
SS_MAXDC = 1.84V
fOSC = 200kHz
RDELAY = 10k
SS_MAXDC (V)
1.60
20
70
80
90
1.84
2.08
60
50
40
30
1952 G23
TA = 25°C
fOSC = 200kHz
RDELAY = 10k
SD_VSEC = 1.32V
SD_VSEC = 1.98V
SD_VSEC = 2.64V
fOSC (kHz)
100
1.60
2.08
2.20
2.32
500
400
300
200
1.96
1.84
1.72
1952 G24
TA = 25°C
SD_VSEC = 1.32V
RDELAY = 10k
0
0.8
1.0
1.2
0.6
0.4
0.2
1952 G25
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125
ACTIVE THRESHOLD
RESET THRESHOLD
BLANK Duration vs RBLANK
tDELAY: SOUT Rise to OUT Rise vs
RDELAY
RBLANK (k)
0
0
400
200
1000
40
80
100
1952 G26
800
600
20
60
140
120
160
TA = 25°C
RDELAY (k)
0
0
80
40
200
40
80
100
1952 G27
160
120
20
60
140
120
160
TA = 25°C



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