Datasheet

3
LT3466-1
34661f
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT1
Overvoltage Threshold 39.5 V
V
OUT2
Overvoltage Threshold 39.5 V
Schottky 1 Forward Drop I
SCHOTTKY1
= 300mA 0.85 V
Schottky 2 Forward Drop I
SCHOTTKY2
= 300mA 0.85 V
Schottky 1 Reverse Leakage V
OUT1
= 20V 5 µA
Schottky 2 Reverse Leakage V
OUT2
= 20V 5 µA
Soft-Start Time (Switcher 1) 600 µs
Soft-Start Time (Switcher 2) 600 µs
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.
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
UW
Switching Waveforms
(LED Driver)
Switching Waveforms
(Boost Converter)
V
FB1
vs V
CTRL1
V
OUT1
100mV/DIV
(AC-COUPLED)
V
SW1
20V/DIV
I
L1
100mA/DIV
V
IN
= 3.6V 0.5µs/DIV 34661 G01
6 LEDs AT 20mA
CIRCUIT OF FIGURE 1
V
OUT2
100mV/DIV
(AC-COUPLED)
V
SW2
20V/DIV
I
L2
100mA/DIV
V
IN
= 3.6V 0.5µs/DIV 34661 G02
V
OUT2
= 16V/30mA
CIRCUIT OF FIGURE 1
V
CTRL1
(V)
0
V
FB1
(mV)
100
150
2
34661 G03
50
0
0.5
1
1.5
250
200
V
IN
= 3.6V
6 LEDs
V
FB2
vs V
CTRL2
V
CTRL2
(V)
0
V
FB2
(mV)
400
600
2
34661 G16
200
300
500
100
0
0.5
1
1.5
900
800
700
V
IN
= 3.6V
V
OUT2
= 16V
T
A
= 25°C unless otherwise specified