LT1950 데이터 시트보기 (PDF) - Linear Technology
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LT1950 Datasheet PDF : 20 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
BLANK Override Threshold –
ISENSE Maximum Threshold vs
Temperature
40
Minimum VIN Start-Up Voltage vs
Temperature (VIN2 Boosted)
3.00
35
2.75
30
25
2.50
20
2.25
15
10
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G07
SHDN Input Current *(–1) vs
Temperature
14
12
SHDN = SHDN THRESHOLD + 70mV
10
8
6
4
SHDN = SHDN THRESHOLD – 100mV
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G10
VIN2: GATE Enable
vs Temperature
9.2
8.7
GATE ENABLE
8.2
HYSTERESIS
7.7
GATE DISABLE
7.2
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G13
2.00
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G08
SHDN Current Hysteresis vs
Temperature
11
10
9
8
7
6
5
4
3
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G11
VIN2: BOOST Disable
vs Temperature
13.0
12.5
12.0
11.5
BOOST DISABLE
11.0
10.5
HYSTERESIS
10.0
BOOST RE-ENABLE
9.5
9.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G14
LT1950
VIN IQ vs Temperature
3.1
2.9
2.7
2.5
2.3
2.1
1.9
1.7
1.5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G09
GATE Rise/Fall Time vs
GATE Capacitance
125
TA = 25°C
100
tr
75
tf
50
25
0
0 1000 2000 3000 4000 5000
GATE CAPACITANCE (pF)
1950 G12
BOOST Switch ILIMIT vs
Temperature
250
200
150
100
50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1950 G15
1950fa
5
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