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参数资料
| 型号： | LTC3454EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER PHOTO FLASH 10-DFN |
| 标准包装： | 2,500 |
| 拓扑： | PWM，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 900kHz ~ 1.15MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 5.15V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
LTC3454
TYPICAL APPLICATION
500mA LED Flashlight Driver
L1
4.7μH
LED Power Ef?ciency vs V IN
3-CELL
ALKALINE
4.5V
2.2μF
V IN
SW1
SW2
V OUT
4.7μF
I LED = 500mA
100
95
SWA
SWD
LED
90
EN1
SWB
SWC
LED
85
EN2
80
75
V C
0.1μF
1MHz
BUCK-BOOST
LTC3454
GND (EXPOSED PAD)
LED: LUMILEDS, LXCL LW3C
L1: TOKO A997AS-4R7M
I SET1
I SET2
R ISET1
6.19k
1%
3453 TA02
70
65 T A = 25°C
60
I LED = 500mA
EFFICIENCY = (V OUT – V LED )I LED /V IN I IN
2.7 3.1 3.5 3.9 4.3 4.7 5.1
V IN (V)
5.5
3454 TA02b
RELATED PARTS
PART NUMBER
LT1618
DESCRIPTION
Constant Current, Constant Voltage 1.4MHz, High Ef?ciency
COMMENTS
V IN : 1.6V to 18V, V OUT(MAX) = 34V, I Q = 1.8mA, I SD < 1μA,
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MS10 Package/EDD Package
V IN : 2.6V to 16V, V OUT(MAX) = 34V, I Q = 4.2mA/5.5mA, I SD < 1μA,
ThinSOT Package
V IN : 1V to 10V, V OUT(MAX) = 34V, I Q = 1.2mA, I SD < 1μA,
ThinSOT Package
V IN : 2.5V to 10V, V OUT(MAX) = 34V, I Q = 1.9mA, I SD < 1μA,
ThinSOT Package/SC70 Package
V IN : 2.8V to 4.5V, V OUT(MAX) = 6V, I Q = 50μA, I SD < 1μA,
QFN-24 Package
LTC3215
LTC3216
LTC3440/
LTC3441
LTC3443
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LTC3453
700mA Low Noise Charge Pump LED Driver
1A Low Noise High Current Charge Pump LED
Driver with Independent Flash/Torch Current
600mA/1.2A I OUT , 2MHz/1MHz, Synchronous Buck-Boost
DC/DC Converter
600mA/1.2A I OUT , 600kHz, Synchronous Buck-Boost
DC/DC Converter
Single Cell 350mA LED Driver
Synchronous Buck-Boost High Power White LED Driver
V IN : 2.9V to 4.4V, V OUT(MAX) = 5.5V, I Q = 300μA, I SD < 2.5μA,
DFN Package
V IN : 2.9V to 4.4V, V OUT(MAX) = 5.5V, I Q = 300μA, I SD < 2.5μA,
DFN Package
V IN : 2.4V to 5.5V, V OUT(MAX) = 5.25V, I Q = 25μA/50μA, I SD <1 μA,
MS-10 Package/DFN Package
V IN : 2.4V to 5.5V, V OUT(MAX) = 5.25V, I Q = 28μA, I SD < 1μA,
DFN Package
V IN : 1V to 3.2V, V OUT(MAX) = 4V, I Q = 20μA, I SD = 20μA,
DFN Package
V IN : 2.7V to 5.5V, Up to 500mA Continuous Output Current,
QFN-16 Package
LT3465/LT3465A Constant Current, 1.2MHz/2.7MHz, High Ef?ciency White LED
Boost Regulator with Integrated Schottky Diode
LT3466 Dual Constant Current, 2MHz, High Ef?ciency White LED
Boost Regulator with Integrated Schottky Diode
LT3479 3A, Full Featured DC/DC Converter with Soft-Start and
Inrush Current Protection
V IN : 2.7V to 16V, V OUT(MAX) = 34V, I Q = 1.9mA, I SD < 1μA,
ThinSOT Package
V IN : 2.7V to 24V, V OUT(MAX) = 40V, I Q = 5mA, I SD < 16μA,
DFN Package
V IN : 2.5V to 24V, V OUT(MAX) = 40V, I Q = 6.5mA, I SD < 1μA,
DFN Package/TSOPP Package
3454fa
12 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT 0309 REV A ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2005
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