LT3754
5
3754fc
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 V
IN
= 7V, C
L
= 3300pF (Note 4) 30 nS
GATE Driver Output Fall Time V
IN
= 7V, C
L
= 3300pF (Note 4) 30 nS
GATE Output Low I
GATE
= 0µA 0.1 V
GATE Output High INTV
CC
= V
IN
= 7V
I
GATE
= 0µA
6.95
V
OUTPUT VOLTAGE
V
OUT
Over Voltage Protection (OVP) Regulation Voltage OVP
SET
= 0.22V
OVP
SET
= 1V
12.5
57
V
V
OVP
SET
Input Current (Out of Pin) OVP
SET
= 0.22V, V
OUT
=12V 40 200 nA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= V
OUT
= 6V, R
ISET
=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 INTV
CC
voltage.
Note 5: See Duty Cycle Considerations in the Applications Information.
T
A
= 25°C, unless otherwise noted.
JUNCTION TEMERATURE (°C)
–50 –25
LED CURRENT MATCHING (%)
0.8
0.4
0.0
–0.4
–0.8
1000 25
3754 G01
12550 75
R
ISET
= 14.7k (I(LED) = 20mA)
Worst-Case Channels LED
Current Matching
(Normalized to 16-channel Average)
JUNCTION TEMERATURE (°C)
–50
LED CURRENT (mA)
21.00
20.00
20.50
19.50
19.00
7525
3754 G02
125500 100–25
R
ISET
= 14.7k
CTRL (V)
0.00
LED CURRENT (mA)
55
10
5
50
40
30
20
45
35
25
15
0
0.75 1.251.00
3754 G03
1.500.500.25
R
ISET
=
5.76k
7.32k
9.76k
14.7k
29.4k
