LT3596IUHG 데이터 시트보기 (PDF) - Linear Technology
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LT3596IUHG Datasheet PDF : 22 Pages
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LT3596
Typical Performance Characteristics TA = 25°C, unless otherwise noted
Boost Diode Voltage
1.0
0.8
0.6
0.4
0.2
Soft-Start
EN/UVLO
5V/DIV
SW
50V/DIV
IL
500mA/DIV
VOUT
20V/DIV
400µs/DIV
60V Buck Switching Waveforms
SW
20V/DIV
IL
500mA/DIV
VOUT
20V/DIV
3596 G11
400ns/DIV
3596 G12
0
0 25 50 75 100 125 150 175
CURRENT (mA)
3596 G10
FB and LED Loop Regulation
Voltage
1.4
1.3
VFB
1.2
1.1
VLED
1.0
0.9
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3596 G13
LED Current vs PWM Duty Cycle
100
RISETn = 20k
10
1
0.1
0.01
0.001
LED Current
103
RISETn = 20k
102
101
100
LED Current Matching
1.00
RISETn = 20k
0.75
0.50
0.25
0
99
98
97
–50 –25
0 25 50 75
TEMPERATURE (°C)
LED1
LED2
LED3
100 125
3596 G14
–0.25
–0.50
–0.75
–1.00
–50 –25
0 25 50 75
TEMPERATURE (°C)
CH1
CH2
CH3
100 125
3596 G15
LED Current vs CTRLn Voltage
100
RISETn = 20k
75
Adaptive Loop Switching
Waveforms (with PWM Dimming)
ILED
100mA/DIV
VOUT
10V/DIV
50
VLED
10V/DIV
25
VSW
100V/DIV
200µs/DIV
3596 G18
0.0001
0.001
0.01 0.1
1
10
100
PWM DUTY CYCLE (%)
3596 G16
0
0 0.25 0.5 0.75 1
1.25 1.5
CTRLn VOLTAGE (V)
3596 G17
3596fa
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