LT3754 데이터 시트보기 (PDF) - Linear Technology
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LT3754 Datasheet PDF : 30 Pages
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LT3754
Electrical Characteristics 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.
PARAMETER
GATE DRIVER
CONDITIONS
MIN TYP MAX UNITS
GATE Driver Output Rise Time
GATE Driver Output Fall Time
GATE Output Low
GATE Output High
OUTPUT VOLTAGE
VIN = 7V, CL = 3300pF (Note 4)
VIN = 7V, CL = 3300pF (Note 4)
IGATE= 0µA
INTVCC = VIN = 7V
IGATE = 0µA
30
nS
30
nS
0.1
V
6.95
V
VOUT Over Voltage Protection (OVP) Regulation Voltage
OVPSET Input Current (Out of Pin)
OVPSET = 0.22V
OVPSET = 1V
OVPSET = 0.22V, VOUT =12V
12.5
V
57
V
40
200
nA
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
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.
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
Worst-Case Channels LED
Current Matching
(Normalized to 16-channel Average)
0.8
0.4
LED Current
vs Junction Temperature
21.00
RISET = 14.7k
20.50
0.0
20.00
– 0.4
19.50
RISET = 14.7k (I(LED) = 20mA)
– 0.8
–50 –25 0 25 50 75
100 125
JUNCTION TEMERATURE (°C)
3754 G01
19.00
–50
–25 0 25 50 75 100 125
JUNCTION TEMERATURE (°C)
3754 G02
LED Current
vs CTRL Pin Voltage
55
50
RISET =
5.76k
45 7.32k
9.76k
40 14.7k
35 29.4k
30
25
20
15
10
5
0
0.00 0.25 0.50 0.75 1.00
CTRL (V)
1.25 1.50
3754 G03
3754fc
5
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