5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> LT1937ES5
LT1937ES5 PDF预览

LT1937ES5

更新时间： 2024-10-02 22:22:43
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
12页 361K
描述
White LED Step-Up Converter in SC70 and ThinSOT

阅读下载

中文翻译

获取价格

LT1937ES5 数据手册

 浏览型号LT1937ES5的Datasheet PDF文件第2页浏览型号LT1937ES5的Datasheet PDF文件第3页浏览型号LT1937ES5的Datasheet PDF文件第4页浏览型号LT1937ES5的Datasheet PDF文件第5页浏览型号LT1937ES5的Datasheet PDF文件第6页浏览型号LT1937ES5的Datasheet PDF文件第7页 
LT1937  
White LED  
Step-Up Converter in  
SC70 and ThinSOT  
U
FEATURES  
DESCRIPTIO  
The LT®1937 is a step-up DC/DC converter specifically  
designed to drive white LEDs with a constant current. The  
device can drive two, three or four LEDs in series from a  
Li-Ion cell. Series connection of the LEDs provides iden-  
tical LED currents resulting in uniform brightness and  
eliminating the need for ballast resistors. The LT1937  
switches at 1.2MHz, allowing the use of tiny external  
components. The output capacitor can be as small as  
0.22µF, saving space and cost versus alternative solu-  
tions. A low 95mV feedback voltage minimizes power loss  
in the current setting resistor for better efficiency.  
■
Inherently Matched LED Current  
■
High Efficiency: 84% Typical  
■
Drives Up to Four LEDs from a 3.2V Supply  
■
Drives Up to Six LEDs from a 5V Supply  
■
36V Rugged Bipolar Switch  
■
Fast 1.2MHz Switching Frequency  
■
Uses Tiny 1mm Tall Inductors  
■
Requires Only 0.22µF Output Capacitor  
Low Profile SC70 and ThinSOTTM Packaging  
■
U
APPLICATIO S  
The LT1937 is available in low profile SC70 and ThinSOT  
packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
ThinSOT is a trademark of Linear Technology Corporation.  
■
Cellular Phones  
■
PDAs, Handheld Computers  
■
Digital Cameras  
■
MP3 Players  
■
GPS Receivers  
U
TYPICAL APPLICATIO  
Conversion Efficiency  
L1  
22µH  
90  
D1  
V
IN  
3V TO 5V  
85  
80  
C1  
C2  
LED 1  
LED 2  
LED 3  
1µF  
0.22µF  
V
SW  
FB  
IN  
15mA  
V
IN  
= 3V  
V
IN  
= 3.6V  
LT1937  
75  
70  
65  
60  
OFF ON  
SHDN  
GND  
R1  
6.34Ω  
1937 F01a  
C1, C2: X5R OR X7R DIELECTRIC  
D1: CENTRAL SEMICONDUCTOR CMDSH-3  
L1: MURATA LQH3C-220 OR EQUIVALENT  
0
5
10  
LED CURRENT (mA)  
15  
20  
Figure 1. Li-Ion Powered Driver for Three White LEDs  
1937 TA01b  
1937f  
1
1234567...12

中文翻译

下载PDF

LT1937ES5 替代型号

型号 品牌 替代类型 描述 数据表
LT1937ES5#PBF Linear

功能相似

 LT1937 - White LED Step-Up Converter in SC70 and ThinSOT; Package: SOT; Pins: 5; Temperatu
LT1937ES5#TR Linear

功能相似

 LT1937 - White LED Step-Up Converter in SC70 and ThinSOT; Package: SOT; Pins: 5; Temperatu

与LT1937ES5相关器件

型号 品牌 获取价格 描述 数据表
LT1937ES5#PBF Linear

获取价格

 		LT1937 - White LED Step-Up Converter in SC70 and ThinSOT; Package: SOT; Pins: 5; Temperatu
LT1937ES5#TR Linear

获取价格

 		LT1937 - White LED Step-Up Converter in SC70 and ThinSOT; Package: SOT; Pins: 5; Temperatu
LT1937ES5#TRM Linear

获取价格

 		LT1937 - White LED Step-Up Converter in SC70 and ThinSOT; Package: SOT; Pins: 5; Temperatu
LT1937ES5#TRMPBF Linear

获取价格

 		LT1937 - White LED Step-Up Converter in SC70 and ThinSOT; Package: SOT; Pins: 5; Temperatu
LT1937ESC6 Linear

获取价格

 		White LED Step-Up Converter in SC70 and ThinSOT
LT1937ESC6#PBF Linear

获取价格

 		LT1937 - White LED Step-Up Converter in SC70 and ThinSOT; Package: SC70; Pins: 6; Temperat
LT1938 ADI

获取价格

 		25V、2.2A、2.8MHz 降压型开关稳压器
LT1938IDD#TRPBF Linear

获取价格

 		LT1938 - 25V, 2.2A, 2.8MHz Step-Down Switching Regulator; Package: DFN; Pins: 10; Temperat
LT1939 Linear

获取价格

 		Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT1939 ADI

获取价格

 		单片式 2A 降压型稳压器和线性稳压器/控制器

与LT1937ES5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