LT3970 데이터 시트보기 (PDF) - Linear Technology
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LT3970
Linear Technology
LT3970 Datasheet PDF : 22 Pages
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LT3970/LT3970-3.3/LT3970-5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Switch VCESAT (ISW = 200mA)
vs Temperature
250
200
150
100
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3970 G14
Minimum Input Voltage,
VOUT = 3.3V
5.0
FRONT PAGE APPLICATION
VOUT = 3.3V
4.5
4.0
TO START/RUN
3.5
3.0
2.5
0
50 100 150 200 250 300 350
LOAD CURRENT (mA)
3970 G17
Switch VCESAT
400
300
200
100
0
0
100 200 300 400 500
SWITCH CURRENT (mA)
3970 G15
Minimum Input Voltage,
VOUT = 5V
6.5
FRONT PAGE APPLICATION
VOUT = 5V
6.0
TO START
5.5
TO RUN
5.0
4.5
4.0
0
50 100 150 200 250 300 350
LOAD CURRENT (mA)
3970 G18
BOOST Pin Current
16
14
12
10
8
6
4
2
0
100 200 300 400 500
SWITCH CURRENT (mA)
3970 G16
Boost Diode Forward Voltage
1.2
1.0
0.8
0.6
0.4
0.2
0
0
–50°C
25°C
125°C
150°C
50
100
150
200
BOOST DIODE CURRENT (mA)
3970 G19
Catch Diode Forward Voltage
1.0
0.8
0.6
0.4
0.2
0
0
–50°C
25°C
125°C
150°C
100
200
300
400
CATCH DIODE CURRENT (mA)
3970 G20
6
Catch Diode Leakage
20
VR = 12V
16
12
8
4
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3970 G21
Power Good Threshold
92
91
90
89
88
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3970 G22
3970fa
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