5秒后页面跳转
捷配首页

Datasheet > LT3420
LT3420 PDF预览

LT3420

更新时间： 2023-12-20 18:45:02
品牌 Logo 应用领域
亚德诺 - ADI 闪光灯电容器
页数 文件大小 规格书
20页 247K
描述
具自动刷新功能的照相机闪光灯电容器充电器

阅读下载

中文翻译

获取价格

LT3420 数据手册

 浏览型号LT3420的Datasheet PDF文件第2页浏览型号LT3420的Datasheet PDF文件第3页浏览型号LT3420的Datasheet PDF文件第4页浏览型号LT3420的Datasheet PDF文件第5页浏览型号LT3420的Datasheet PDF文件第6页浏览型号LT3420的Datasheet PDF文件第7页 
LT3420/LT3420-1  
Photoflash Capacitor  
Chargers with Automatic Refresh  
U
FEATURES  
DESCRIPTIO  
The LT®3420/LT3420-1 charge high voltage photoflash  
capacitorsquicklyandefficiently. Designedforuseinboth  
digital and film cameras, these devices use a flyback  
topology to achieve efficiencies up to four times better  
than competing flash modules. A unique adaptive off-time  
control algorithm* maintains current-limited continuous  
mode transformer operation throughout the entire charge  
cycle, eliminating the high inrush current often found in  
modules.  
■
Charges 220µF to 320V in 3.7 Seconds  
from 5V (LT3420)  
■
Charges 100µF to 320V in 3.5 Seconds  
from 5V (LT3420-1)  
Charges Any Size Photoflash Capacitor  
Supports Operation from Two AA Cells or Any  
Supply from 1.8V to 16V  
Controlled Peak Switch Current: 1.4A (LT3420)  
1.0A (LT3420-1)  
■
■
■
■
Controlled Input Current: 840mA (LT3420)  
450mA (LT3420-1)  
The LT3420/LT3420-1 output voltage sensing scheme*  
monitors the flyback voltage to indirectly regulate the  
output voltage, eliminating an output resistor divider or  
discrete zener diode. This feature allows the capacitor to  
be held at a fully charged state without excessive power  
consumption. Automatic refresh (which can be defeated)  
allows the capacitor to remain charged while consuming  
an average input current of about 2mA, at a user-defined  
refresh rate. A logic high on the CHARGE pin initiates  
charging, while the DONE pin signals that the capacitor is  
fully charged.  
■
■
■
■
■
■
■
■
■
Uses Standard Transformers  
Efficient Flyback Operation (>75% Typical)  
Adjustable Output  
Automatic Refresh  
Charge Complete Indicator  
No High Voltage Zener Diode Required  
No Output Voltage Divider Required  
Small 10-Lead MSOP Package  
Small 10-Lead (3mm × 3mm) DFN Package  
U
The LT3420/LT3420-1 are available in 10-Lead MSOP and  
(3mm × 3mm) DFN packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners. *Protected by U.S. Patents  
including 6518733.  
APPLICATIO S  
■
Digital Camera Flash Unit  
Film Camera Flash Unit  
High Voltage Power Supplies  
■
■
U
TYPICAL APPLICATIO  
T1  
1:10  
T1  
1:12  
V
(3mm TALL)  
BAT  
V
BAT  
320V  
320V  
1.8V TO 6V  
INPUT CURRENT  
≈450mA  
1.8V TO 6V  
INPUT CURRENT  
≈350mA  
5
8
4
5,6  
C1  
4.7µF  
C1  
4.7µF  
D1  
D1  
3
6
3,4  
51.1k  
1
60.4k  
2
3
6
SW  
2
3
R
FB  
6
SW  
SEC  
C3  
100µF  
330V  
C3  
220µF  
330V  
V
R
BAT  
FB  
V
BAT  
+
+
4
V
7
4
CC  
V
CC  
7
V
SEC  
CC  
V
2.5V TO 6V  
CC  
C2  
2.5V TO 10V  
C2  
PHOTOFLASH  
CAPACITOR  
PHOTOFLASH  
CAPACITOR  
4.7µF  
LT3420-1  
4.7µF  
LT3420  
9
9
CHARGE  
DONE  
CHARGE  
DONE  
CHARGE  
DONE  
CHARGE  
DONE  
1
1
8
8
R
REF  
R
REF  
GND  
C
GND  
T
C
T
10  
5
10  
5
2k  
2k  
0.1µF  
0.1µF  
C1, C2: 4.7µF, X5R or X7R, 6.3V  
C3: RUBYCON 100µF PHOTOFLASH CAPACITOR  
T1: KIJIMA MUSEN SBL-5.6S-2  
D1: VISHAY GSD2004S SOT-23  
DUAL DIODE. DIODES CONNECTED IN SERIES  
C1, C2: 4.7µF, X5R or X7R, 10V  
C3: RUBYCON 220µF PHOTOFLASH CAPACITOR  
T1: TDK SRW10EPC-U01H003 FLYBACK TRANSFORMER  
D1: VISHAY GSD2004S SOT-23  
DUAL DIODE. DIODES CONNECTED IN SERIES  
DANGER HIGH VOLTAGE  
OPERATION BY HIGH VOLTAGE  
TRAINED PERSONNEL ONLY  
3420 F02  
3420 F01  
Figure 1. High Charge Rate LT3420 Photoflash Circuit  
Figure 2. Small Size LT3420-1 Photoflash Circuit  
3420fb  
1
1234567...20

中文翻译

下载PDF

与LT3420相关器件

型号 品牌 获取价格 描述 数据表
LT3420_15 Linear

获取价格

 		Photoflash Capacitor Chargers with Automatic Refresh
LT3420-1 Linear

获取价格

 		Photoflash Capacitor Chargers with Automatic Refresh
LT3420-1_15 Linear

获取价格

 		Photoflash Capacitor Chargers with Automatic Refresh
LT3420EDD Linear

获取价格

 		LT3420 - Photoflash Capacitor Chargers with Automatic Refresh; Package: DFN; Pins: 10; Tem
LT3420EDD#PBF Linear

获取价格

 		LT3420 - Photoflash Capacitor Chargers with Automatic Refresh; Package: DFN; Pins: 10; Tem
LT3420EDD#TR Linear

获取价格

 		LT3420 - Photoflash Capacitor Chargers with Automatic Refresh; Package: DFN; Pins: 10; Tem
LT3420EDD#TRPBF Linear

获取价格

 		LT3420 - Photoflash Capacitor Chargers with Automatic Refresh; Package: DFN; Pins: 10; Tem
LT3420EDD-1 Linear

获取价格

 		LT3420 - Photoflash Capacitor Chargers with Automatic Refresh; Package: DFN; Pins: 10; Tem
LT3420EDD-1#PBF Linear

获取价格

 		LT3420 - Photoflash Capacitor Chargers with Automatic Refresh; Package: DFN; Pins: 10; Tem
LT3420EDD-1#TRPBF Linear

获取价格

 		LT3420 - Photoflash Capacitor Chargers with Automatic Refresh; Package: DFN; Pins: 10; Tem

与LT3420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