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LT3754 Datasheet(PDF) 5 Page - Linear Technology

Part # LT3754
Description  16-Channel 횞 50mA LED Driver
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3754 Datasheet(HTML) 5 Page - Linear Technology

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LT3754
5
3754f
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3754E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the
−40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GATE DRIVER
GATE Driver Output Rise Time
VIN = 12V, CL = 3300pF (Note 4)
30
nS
GATE Driver Output Fall Time
VIN = 12V, CL = 3300pF (Note 4)
30
nS
GATE Output Low
IGATE= 0μA
0.1
V
GATE Output High
INTVCC = VIN = 7V
IGATE = 0μA
6.95
V
OUTPUT VOLTAGE
VOUT Over Voltage Protection (OVP) Regulation Voltage
OVPSET = 0.22V
OVPSET = 1V
12.5
57
V
V
OVPSET Input Current (Out of Pin)
OVPSET = 0.22V, VOUT =12V
40
200
nA
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = VOUT = 6V, RISET =14.7k unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
LED Current
vs Junction Temperature
LED Current
vs CTRL Pin Voltage
LT3754I is guaranteed to meet performance specifications from
−40°C to 125°C junction temperature.
Note 3: For Maximum Operating Ambient Temperature, see
Thermal Calculations in the Applications Information section.
Note 4: GATE rise and fall times are measured between 10% and 90%
of INTVCC voltage.
Note 5: See Duty Cycle Considerations in the Applications Information.
TA = 25°C, unless otherwise noted.
JUNCTION TEMERATURE (°C)
–50 –25
0.8
0.4
0.0
–0.4
–0.8
100
025
3754 G01
125
50
75
RISET = 14.7k (I(LED) = 20mA)
Worst-Case Channels LED
Current Matching
(Normalized to 16-channel Average)
JUNCTION TEMERATURE (°C)
–50
21.00
20.00
20.50
19.50
19.00
75
25
3754 G02
125
50
0
100
–25
RISET = 14.7k
CTRL (V)
0.00
55
10
5
50
40
30
20
45
35
25
15
0
0.75
1.25
1.00
3754 G03
1.50
0.50
0.25
RISET =
5.76k
7.32k
9.76k
14.7k
29.4k



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