LT3973IMSE-3.3-TRPBF 查看數據表（PDF） - Linear Technology
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LT3973IMSE-3.3-TRPBF
Linear Technology
LT3973IMSE-3.3-TRPBF Datasheet PDF : 24 Pages
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LT3973/LT3973-3.3/LT3973-5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Switch VCESAT
600
500
400
300
200
100
0
0 200 400 600 800 1000 1200
SWITCH CURRENT (mA)
3973 G19
Minimum Input Voltage,
VOUT = 5V
6.5
FRONT PAGE APPLICATION
VOUT = 5V
6.0
5.5
TO START/TO RUN
5.0
4.5
4.0
0
100 200 300 400 500 600 700
LOAD CURRENT (mA)
3973 G22
BOOST Pin Current
25
20
15
10
5
0
0 200 400 600 800 1000 1200
SWITCH CURRENT (mA)
3973 G20
Start-Up and Dropout
Performance
9
FRONT PAGE APPLICATION
8
7
VIN
6
5
VOUT
4
3
2
1
0
TIME
3973 G23
Minimum Input Voltage,
VOUT = 3.3V
5.0
FRONT PAGE APPLICATION
VOUT = 3.3V
4.5
4.0
TO START/TO RUN
3.5
3.0
2.5
0
100 200 300 400 500 600 700
LOAD CURRENT (mA)
3973 G21
Minimum Input Voltage to Switch
4.0
3.5
3.0
2.5
2.0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3973 G24
VFB Regulation Voltage
1.4
1.2
1.0
0.8
0.6
2.0
2.5 3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
3973 G25
Boost Diode Forward Voltage
1.2
1.0
0.8
0.6
0.4
0.2
0
0
150°C
125°C
25°C
–50°C
50
100
150
200
BOOST DIODE CURRENT (mA)
3973 G26
For more information www.linear.com/LT3973
Catch Diode Forward Voltage
1.0
0.8
0.6
0.4
0.2
0
0
150°C
125°C
25°C
–50°C
200 400 600 800 1000 1200
CATCH DIODE CURRENT (mA)
3973 G27
3973fb
7
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