LT1952-1 Linear Technology, LT1952-1 Datasheet - Page 5

• Manufacturer Part Number: LT1952-1
• Description: Single Switch Synchronous Forward Controller
• Manufacturer: Linear Technology

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TYPICAL PERFORMANCE CHARACTERISTICS
1.23
1.20
1.25
1.24
1.22
1.21
250
600
550
500
450
400
350
300
200
15
10
5
0
–50
–50
–50
FB Voltage vs Temperature
V
vs Temperature
SD_V
vs Temperature
SD_V
IN
–25
–25
–25
Start-up Current
SEC
SEC
= 1.4V
0
0
Pin Current
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0mA PIN CURRENT AFTER
PART TURN ON
PIN CURRENT BEFORE
PART TURN ON
25
25
25
LT1952
LT1952-1
50
50
50
75
75
75
100
100
100
1952 G01
1952 G04
1952 G07
125
125
125
200
155
245
230
215
185
170
6.5
6.0
5.5
5.0
4.5
4.0
3.5
18
16
14
12
10
8
6
–50
–50
–50
Switching Frequency
vs Temperature
V
V
vs Temperature
OC = OPEN
IN
IN
LT1952-1 V
–25
–25
–25
I
Turn ON/OFF Voltage
Q
LT1952 V
LT1952 V
vs Temperature
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
IN
IN
IN
ON
25
25
25
TURN OFF VOLTAGE
TURN ON VOLTAGE
50
50
50
LT1952-1 V
75
75
75
IN
100
100
100
OFF
1952 G02
1952 G05
1952 G08
125
125
125
1.42
1.37
1.32
1.27
1.22
250
500
450
400
350
300
200
150
100
0.6
1.6
1.4
1.2
1.0
0.8
0.4
0.2
LT1952/LT1952-1
0
–50
–50
–50
V
vs Temperature
SD_V
vs Temperature
COMP Active Threshold
vs Temperature
R
V
SD_V
IN
ISENSE
IN
–25
–25
–25
Shutdown Current
= 15V
SEC
SEC
= 0k
= 0V
Turn ON Threshold
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
50
50
50
75
75
75
100
100
100
1952 G03
1952 G06
1952 G09
19521fd
5
125
125
125