5秒后页面跳转
捷配首页

Datasheet > LT3475-1
LT3475-1 PDF预览

LT3475-1

更新时间： 2024-12-01 05:43:31
品牌 Logo 应用领域
凌特 - Linear 驱动器
页数 文件大小 规格书
20页 233K
描述
Dual Step-Down l 1.5A LED Driver

阅读下载

中文翻译

获取价格

LT3475-1 数据手册

 浏览型号LT3475-1的Datasheet PDF文件第2页浏览型号LT3475-1的Datasheet PDF文件第3页浏览型号LT3475-1的Datasheet PDF文件第4页浏览型号LT3475-1的Datasheet PDF文件第5页浏览型号LT3475-1的Datasheet PDF文件第6页浏览型号LT3475-1的Datasheet PDF文件第7页 
LT3475/LT3475-1  
Dual Step-Down  
1.5A LED Driver  
U
DESCRIPTIO  
FEATURES  
True Color PWMTM Delivers Constant Color with  
The LT®3475/LT3475-1 are dual step-down DC/DC  
converters designed to operate as a constant-current  
source. An internal sense resistor monitors the output  
current allowing accurate current regulation ideal for  
driving high current LEDs. The high side current sense al-  
lowsgroundedcathodeLEDoperation.Highoutputcurrent  
accuracy is maintained over a wide current range, from  
50mA to 1.5A, allowing a wide dimming range. Unique  
PWM circuitry allows a dimming range of 3000:1, avoid-  
ing the color shift normally associated with LED current  
dimming.  
■
3000:1 Dimming Range  
■
Wide Input Range: 4V to 36V Operating, 40V  
Maximum  
■
Accurate and Adjustable Control of LED Current  
from 50mA to 1.5A  
■
High Side Current Sense Allows Grounded Cathode  
LED Operation  
■
Open LED (LT3475) and Short Circuit Protection  
■
LT3475-1 Drives LED Strings Up to 25V  
■
Accurate and Adjustable 200kHz to 2MHz  
Switching Frequency  
The high switching frequency offers several advantages,  
permitting the use of small inductors and ceramic capaci-  
tors. Small inductors combined with the 20 lead TSSOP  
surface mount package save space and cost versus  
alternative solutions. The constant switching frequency  
combined with low-impedance ceramic capacitors result  
in low, predictable output ripple.  
■
Anti-Phase Switching Reduces Ripple  
■
Uses Small Inductors and Ceramic Capacitors  
■
Available in the Compact 20-Lead TSSOP Thermally  
Enhanced Surface Mount Package  
U
APPLICATIO S  
■
Automotive and Avionic Lighting  
Withitswideinputrangeof4Vto36V,theLT3475/LT3475-1  
regulate a broad array of power sources. A current mode  
PWM architecture provides fast transient response and  
cycle-by-cycle current limiting. Frequency foldback and  
thermal shutdown provide additional protection.  
■
Architectural Detail Lighting  
■
Display Backlighting  
Constant-Current Sources  
■
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners. Patents Pending.  
U
TYPICAL APPLICATIO  
Dual Step-Down 1.5A LED Driver  
Efficiency  
V
IN  
5V TO 36V  
4.7μF  
95  
V
SHDN  
BOOST2  
IN  
V
IN  
= 12V  
TWO SERIES CONNECTED  
WHITE 1.5A LEDS  
BOOST1  
90  
85  
80  
0.22μF  
0.22μF  
LT3475  
10μH  
10μH  
SW1  
SW2  
SINGLE WHITE 1.5A LED  
OUT1  
LED1  
OUT2  
LED2  
75  
70  
*DIMMING  
CONTROL  
DIMMING*  
CONTROL  
PWM1  
PWM2  
V
C1  
V
C2  
65  
60  
55  
REF  
R
T
2.2μF  
0.1μF  
2.2μF  
0.1μF  
1.5A LED  
CURRENT  
1.5A LED  
CURRENT  
V
ADJ1  
V
ADJ2  
24.3k  
GND  
0.5  
1
0
1.5  
LED CURRENT (A)  
3475 TA01  
*SEE APPLICATIONS SECTION FOR DETAILS  
f
= 600kHz  
SW  
3475 TA01b  
3475fb  
1
1234567...20

中文翻译

下载PDF

与LT3475-1相关器件

型号 品牌 获取价格 描述 数据表
LT3475-1_15 Linear

获取价格

 		Dual Step-Down 1.5A LED Driver
LT3475EFE Linear

获取价格

 		Dual Step-Down l 1.5A LED Driver
LT3475EFE#PBF Linear

获取价格

 		LT3475/LT3475-1 - Dual Step-Down 1.5A LED Driver; Package: TSSOP; Pins: 20; Temperature Ra
LT3475EFE#TR Linear

获取价格

 		LT3475/LT3475-1 - Dual Step-Down 1.5A LED Driver; Package: TSSOP; Pins: 20; Temperature Ra
LT3475EFE#TRPBF Linear

获取价格

 		LT3475/LT3475-1 - Dual Step-Down 1.5A LED Driver; Package: TSSOP; Pins: 20; Temperature Ra
LT3475EFE-1#PBF Linear

获取价格

 		LT3475/LT3475-1 - Dual Step-Down 1.5A LED Driver; Package: TSSOP; Pins: 20; Temperature Ra
LT3475EFE-1#TRPBF Linear

获取价格

 		LT3475/LT3475-1 - Dual Step-Down 1.5A LED Driver; Package: TSSOP; Pins: 20; Temperature Ra
LT3475EFE-1-PBF Linear

获取价格

 		Dual Step-Down l 1.5A LED Driver
LT3475EFE-1-TRPBF Linear

获取价格

 		Dual Step-Down l 1.5A LED Driver
LT3475EFE-PBF Linear

获取价格

 		Dual Step-Down l 1.5A LED Driver

与LT3475-1相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证