LT3959EUHE View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3959EUHE
Linear Technology
LT3959EUHE Datasheet PDF : 26 Pages
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LT3959
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
FBX Positive Regulation Voltage
vs Temperature
1.62
FBX Negative Regulation Voltage
vs Temperature
–0.78
1.61
–0.79
1.60
–0.80
1.59
–0.81
1.58
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G01
Dynamic Quiescent Current
vs Switching Frequency
25
DRIVE = 6V
20
15
IQ (DRIVE)
10
5
IQ (VIN)
0
0
200 400 600 800 1000
SWITCHING FREQUENCY (kHz)
3959 G04
Switching Frequency
vs Temperature
350
325
300
275
250
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G07
–0.82
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G02
RT vs Switching Frequency
100
90
80
70
60
50
40
30
20
10
0
0 100 200 300 400 500 600 700 800 900 1000
SWITCHING FREQUENCY (kHz)
3959 G05
SW Current Limit vs Temperature
7.6
7.4
7.2
7.0
6.8
6.6
6.4
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G08
For more information www.linear.com/LT3959
Quiescent Current
vs Temperature
2.4
IQ (DRIVE)
2.0
1.6
VIN = 12V
1.2 DRIVE = 6V
0.8
0.4
IQ (VIN)
0.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3959 G03
Normalized Switching Frequency
vs FBX Voltage
120
100
80
60
40
20
0
–0.8 –0.4
0 0.4 0.8
FBX VOLTAGE (V)
1.2 1.6
3959 G06
SW Current Limit vs Duty Cycle
8.0
7.5
7.0
6.5
6.0
5.5
5.0
0
20
40
60
80
100
DUTY CYCLE (%)
3959 G09
3959fa
5
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