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LT3466-1
ELECTRICAL CHARACTERISTICS The ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T A = 25 ° C. V IN = 3V, V CTRL1 = 3V, V CTRL2 = 3V, unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V OUT1 Overvoltage Threshold
V OUT2 Overvoltage Threshold
39.5
39.5
V
V
Schottky 1 Forward Drop
Schottky 2 Forward Drop
Schottky 1 Reverse Leakage
Schottky 2 Reverse Leakage
Soft-Start Time (Switcher 1)
Soft-Start Time (Switcher 2)
I SCHOTTKY1 = 300mA
I SCHOTTKY2 = 300mA
V OUT1 = 20V
V OUT2 = 20V
0.85
0.85
600
600
5
5
V
V
μ A
μ A
μ s
μ s
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3466-1E is guaranteed to meet specified performance
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating range
are assured by design, characterization and correlation with statistical
process controls.
Note 3: Current flows out of the pin.
Note 4: Guaranteed by design and test correlation, not production tested.
TYPICAL PERFOR A CE CHARACTERISTICS
Switching Waveforms
(LED Driver)
T A = 25 ° C unless otherwise specified
Switching Waveforms
(Boost Converter)
V OUT1
100mV/DIV
(AC-COUPLED)
V SW1
20V/DIV
I L1
100mA/DIV
V OUT2
100mV/DIV
(AC-COUPLED)
V SW2
20V/DIV
I L2
100mA/DIV
V IN = 3.6V 0.5 μ s/DIV
6 LEDs AT 20mA
CIRCUIT OF FIGURE 1
V FB1 vs V CTRL1
250
V IN = 3.6V
6 LEDs
200
34661 G01
V IN = 3.6V 0.5 μ s/DIV
V OUT2 = 16V/30mA
CIRCUIT OF FIGURE 1
V FB2 vs V CTRL2
900
V IN = 3.6V
800 V OUT2 = 16V
700
34661 G02
600
150
500
100
50
400
300
200
100
0
0
0.5
1
1.5
2
0
0
0.5
1
1.5
2
V CTRL1 (V)
34661 G03
V CTRL2 (V)
34661 G16
34661f
3
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