LT3959EUHE 查看數據表（PDF） - Linear Technology
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LT3959EUHE
Linear Technology
LT3959EUHE Datasheet PDF : 26 Pages
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LT3959
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
EN/UVLO Threshold
vs Temperature
1.27
1.25
EN/UVLO RISING
1.23
1.21
EN/UVLO FALLING
1.19
1.17
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G10
SW Minimum On- and Off-Times
vs Temperature
200
190
180
MINIMUM
OFF TIME
170
160
150
MINIMUM
140
ON TIME
130
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G11
EN/UVLO Hysteresis Current
vs Temperature
2.4
2.2
2.0
1.8
1.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G12
INTVCC vs Temperature
5.0
4.8
DRIVE LDO
4.6
4.4
4.2
4.0
3.8
VIN LDO
3.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G13
INTVCC Dropout Voltage
vs Current, Temperature
400
VIN = 12V
DRIVE = 4V
300
125°C
200
25°C
–40°C
100
INTVCC Load Regulation
5
DRIVE LDO
4.5
4
VIN LDO (DRIVE = 0V)
3.5
3
0
5
10
15
20
25
INTVCC LOAD (mA)
3959 G14
Internal Switch On-Resistance
vs Temperature
60
50
40
30
INTVCC Line Regulation
5.0
DRIVE = 6V
DRIVE LDO
4.5
4.0
DRIVE = 0V
VIN LDO
3.5
3.0
0
5 10 15 20 25 30 35 40 45
VIN (V)
3959 G15
Internal Switch On-Resistance
vs INTVCC
50
45
40
35
0
0
5
10
15
20
25
INTVCC LOAD (mA)
3959 G16
20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G17
6
For more information www.linear.com/LT3959
30
2 2.5 3 3.5 4 4.5 5
INTCCC (V)
3959 G18
3959fa
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