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LT3466 Fiches technique(PDF) 3 Page - Linear Technology

No de pièce LT3466
Description  Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LT3466 Fiches technique(HTML) 3 Page - Linear Technology

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LT3466
3466f
ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VIN = 3V, VCTRL1 = 3V, VCTRL2 = 3V, unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Schottky 1 Forward Drop
ISCHOTTKY1 = 300mA
0.85
V
Schottky 2 Forward Drop
ISCHOTTKY2 = 300mA
0.85
V
Schottky 1 Reverse Leakage
VOUT1 = 20V
5
µA
Schottky 2 Reverse Leakage
VOUT2 = 20V
5
µA
Soft-Start Time (Switcher 1)
600
µs
Soft-Start Time (Switcher 2)
600
µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3466E 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.
TYPICAL PERFOR A CE CHARACTERISTICS
Switching Waveforms
Transient Response
VFB1,2 vs VCTRL1,2
VOUT1
50mV/DIV
VSW1
20V/DIV
IL1
100mA/DIV
VIN = 3.6V
0.5
µs/DIV
3466 G01
CIRCUIT OF FIGURE 1
VOUT1
0.5V/DIV
VCTRL1
2V/DIV
IL1
200mA/DIV
VIN = 3.6V
5
µs/DIV
3466 G02
ILED1 = 20mA TO 10mA
CIRCUIT OF FIGURE 1
CONTROL VOLTAGE (V)
0
100
150
2
3466 G03
50
0
0.5
1
1.5
250
200
VIN = 3V
TA = 25°C


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