- 您现在的位置：买卖IC网 > PDF目录20862 > LT3474IFE-1#TRPBF (Linear Technology)IC LED DRVR HP CONS CURR 16TSSOP PDF资料下载
参数资料
| 型号： | LT3474IFE-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HP CONS CURR 16TSSOP |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 颜色，白色 LED |
| 频率： | 200kHz ~ 2MHz |
| 电源电压： | 3.5 V ~ 36 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 16-TSSOP-EP |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
LT3474/LT3474-1
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 12V, V BOOST = 16V, V O UT = 4V unless otherwise noted (Note 3).
PARAMETER
Reference Voltage Line Regulation
Reference Voltage Load Regulation
V ADJ Pin Bias Current (Note 4)
CONDITIONS
5V < V IN < 36V
0 < I REF < 250μA
l
MIN
TYP
0.01
0.0002
20
MAX
400
UNITS
%/V
%/μA
nA
Switching Frequency
Maximum Duty Cycle
R T = 80.6k
R T = 80.6k
l
l
470
450
90
500
95
530
540
kHz
kHz
%
R T = 10k
R T = 232k
76
98
%
%
Foldback Frequency
R T = 80.6k, V OUT = 0V
70
kHz
SHDN Threshold (to Switch)
2.6
2.65
2.7
V
SHDN Pin Current (Note 5)
PWM Threshold
V SHDN = SHDN Threshold
8.3
0.4
10.3
0.9
12.3
1.2
μA
V
V C Switching Threshold
0.8
V
V C Source Current
V C Sink Current
LED to V C Current Gain
LED to V C Transresistance
V C to Switch Current Gain
V C Clamp Voltage
V C = 1V
V C = 1V
100
100
1.5
1
2
1.9
μA
μA
μA/mA
V/mA
A/V
V
V C Pin Current in PWM Mode
OUT Pin Clamp Voltage (LT3474)
OUT Pin Current in PWM Mode
V C = 1V, V PWM = 0.3V
V OUT = 4V, V PWM = 0.3V
l
l
13.2
0.01
13.8
0.1
1
14.5
10
μA
V
μA
Switch Current Limit (Note 6)
–40°C to 85°C
l
1.6
2.1
3.2
A
LT3474I, LT3474I-1 at 125°C
1.5
3.2
A
Switch V CESAT
Boost Pin Current
Switch Leakage Current
Minimum Boost Voltage (Note 7)
Boost Diode Forward Voltage
I SW = 1A
I SW = 1A
I DIO = 100mA
380
30
0.01
1.9
600
500
50
1
2.5
mV
mA
μA
V
mV
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: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the speci?ed maximum operating junction
temperature may impair device reliability.
Note 3: The LT3474E and LT3474E-1 are guaranteed to meet performance
speci?cations from 0°C to 70°C. Speci?cations over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls. The LT3474I and LT3474I-1
are guaranteed to meet performance speci?cations over the –40°C to
125°C operating temperature range.
Note 4: Current ?ows out of pin.
Note 5: Current ?ows into pin.
Note 6: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
Note 7: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
3474fd
3
相关PDF资料 |
PDF描述 |
|---|---|
| LT3956EUHE#TRPBF | IC LED DVR BUCK BOOST 36-VQFN |
| XLN3640-GL | POWER SUPPLY PROGRAM DC 36V/40A |
| REC8-243.3SRW/H2/A/M | CONV DC/DC 8W 24VIN 3.3VOUT |
| EBC13DRTH | CONN EDGECARD 26POS DIP .100 SLD |
| P51-500-A-R-M12-4.5OVP-000-000 | SENSOR 500PSI M12-1.0 6G .5-4.5V |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3474IFE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Step-Down 1A LED Driver |
| LT3474IFE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Step-Down 1A LED Driver |
| LT3475 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Step-Down l 1.5A LED Driver |
| LT3475-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Step-Down l 1.5A LED Driver |
| LT3475EFE | 制造商:Linear Technology 功能描述:LED DRVR 2Segment 5V/9V/12V/15V/18V/24V 20-Pin TSSOP EP |
发布紧急采购，3分钟左右您将得到回复。