LT3761 데이터 시트보기 (PDF) - Linear Technology
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LT3761 Datasheet PDF : 28 Pages
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LT3761
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
SENSE Current Limit Threshold
vs Temperature
110
EN/UVLO Hysteresis Current
vs Temperature
2.8
EN/UVLO Threshold
vs Temperature
1.27
2.6
105
1.25
RISING
2.4
100
1.23
2.2
FALLING
95
1.21
2.0
90
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3761 G10
INTVCC Current Limit vs
vs Temperature
40
38
36
34
32
30
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3761 G13
PWM Signal Generator Duty Ratio
vs DIM/SS Current
100
80
60
40
20
0
–10 0
10 20 30 40 50
DIM/SS CURRENT (µA)
3761 G16
1.8
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3761 G11
INTVCC Dropout Voltage
vs Current, Temperature
0
–0.2
–0.4
TA = –45°C
–0.6
TA = 25°C
–0.8
–1.0
–1.2
TA = 130°C
–1.4
–1.6
–1.8 VIN = 7V
0
5
10 15 20
LDO CURRENT (mA)
25 30
3761 G14
1.19
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3761 G12
VISP-ISN C/10 Threshold
vs Temperature
35
ISP = 24V
30
25
ISN = 0V
20
15
10
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3761 G15
PWM Signal Generator Frequency
vs Duty Ratio
340
CPWM = 47nF
320
PWMOUT Waveform
CPWMOUT = 2.2nF
PWM
INPUT
PWMOUT
300
5V/DIV
280
260
0
20
40
60
80 100
DUTY RATIO (%)
3761 G17
200ns/DIV
3761 G18
3761f
6
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