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LT3477
TYPICAL APPLICATION
Buck Mode High Current LED Driver
PV IN
32V
R1
C1
2.2μF
LED1
0.1Ω
Ef ?ciency
?
1A
LED4
?
?
LED
STRING C2
1μF
100
90
80
L1
33μH D1
70
60
I SP1
I SN1
SW
R3
280k
50
V IN
3.3V
C3
3.3μF
V IN
I ADJ1
I ADJ2
FBN
R4
10k
40
30
SHDN
SHDN
LT3477
I SP2
20
0
0.2
0.4
0.6
0.8
1
LED CURRENT (A)
V C
I SN2
3477 TA05b
R C
1k
C C
4.7nF
V REF
FBP
GND
SS
R T
C4
33nF
R2
22k
3477 TA07
C1: NIPPON UNITED CHEMICON NTS40X5R1H225M
C2: TAIYO YUDEN GMK316BJ105ML
C3: TAIYO YUDEN LMK316BJ475
L1: TOKO A814AY-330M
D1: DIODES INC DFLS140
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LT1618
Constant Current, Constant Voltage 1.4MHz,
High Ef ?ciency Boost Regulator
V IN : 1.6V to 18V, V OUT(MAX) = 5.5V, I Q = 2.5mA, I SD < 1μA, QFN16 Package
LT3436
3A (I SW ), 800kHz, 34V Step-Up DC/DC Converter V IN : 3V to 25V, V OUT(MAX) = 34V, I Q = 0.9mA, I SD < 6μA, TSSOP16E Package
LTC 3453
?
LT3466
LT3479
LTC3490
Synchronous Buck-Boost High Power White
LED Driver
Dual Constant Current, 2MHz, High Ef ?ciency
White LED Boost Regulator With Integrated
Schottky Diode
3A, 42V Full Featured Boost/Inverter Converter
With Soft-Start
Single Cell 350mA, 1.3MHz LED Driver
V IN : 2.7V to 5.5V, V OUT(MAX) = 5.5V, I Q = 2.5mA, I SD < 1μA, QFN16 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 = 5mA, I SD < 1μA, DFN/TSSOP Packages
V IN : 1V to 3.2V, V OUT(MAX) = 4.7V, I SD < 1μA, DFN/SO8 Packages
3477fc
20 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT 0309 REV C ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2005
发布紧急采购，3分钟左右您将得到回复。
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相关代理商/技术参数
LT3477EFE#TR
制造商:Linear Technology 功能描述:LED DRVR 4Segment 3.3V/5V/9V/12V/15V/18V/24V 20-Pin TSSOP EP T/R
LT3477EFE#TRPBF
功能描述:IC LED DRVR HP CONS CURR 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LT3477EFEPBF
制造商:Linear Technology 功能描述:LED Driver 4-Seg 3.3/5/9/../24V TSSOP20
LT3477EUF
制造商:Linear Technology 功能描述:LED DRVR 4Segment 3.3V/5V/9V/12V/15V/18V/24V 20-Pin QFN EP
LT3477EUF#PBF
功能描述:IC LED DRVR HP CONST CURR 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性（LDO），PWM，升压（升压） 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB，白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C
LT3477EUF#PBF
制造商:Linear Technology 功能描述:IC, LED DRVR, QFN20
LT3477EUF#TRPBF
功能描述:IC LED DRVR HP CONST CURR 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LT3477IFE
制造商:LINER 制造商全称:Linear Technology 功能描述:3A, DC/DC Converter with Dual Rail-to-Rail Current Sense
