参数资料
型号: LT3754EUH#TRPBF
厂商: Linear Technology
文件页数: 5/30页
文件大小: 0K
描述: IC LED DVR 16CH 50MA 32QFN
标准包装: 2,500
恒定电流:
拓扑: PWM,升压(升压)
输出数: 16
内部驱动器:
类型 - 主要: 车载,背光
类型 - 次要: 白色 LED
频率: 100kHz ~ 1MHz
电源电压: 6 V ~ 40 V
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-QFN
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
LT3754
ELECTRICAL CHARACTERISTICS 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.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GATE DRIVER
GATE Driver Output Rise Time
GATE Driver Output Fall Time
GATE Output Low
GATE Output High
V IN = 7V, C L = 3300pF (Note 4)
V IN = 7V, C L = 3300pF (Note 4)
I GATE = 0μA
INTV CC = V IN = 7V
I GATE = 0μA
30
30
6.95
0.1
nS
nS
V
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
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 INTV CC voltage.
Note 5: See Duty Cycle Considerations in the Applications Information.
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, unless otherwise noted.
Worst-Case Channels LED
Current Matching
(Normalized to 16-channel Average)
LED Current
vs Junction Temperature
LED Current
vs CTRL Pin Voltage
0.8
0.4
0.0
21.00
20.50
20.00
R ISET = 14.7k
55
50
45
40
35
30
25
R ISET =
5.76k
7.32k
9.76k
14.7k
29.4k
20
–0.4
19.50
15
10
–0.8
R ISET = 14.7k (I(LED) = 20mA)
–50 –25 0 25 50 75
100
125
19.00
–50
–25
0
25
50
75
100
125
5
0
0.00
0.25
0.50
0.75 1.00
1.25
1.50
JUNCTION TEMERATURE (°C)
3754 G01
JUNCTION TEMERATURE (°C)
3754 G02
CTRL (V)
3754 G03
3754fc
5
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