欢迎访问ic37.com |
会员登录 免费注册
发布采购

LM2703MF-ADJ 参数 Datasheet PDF下载

LM2703MF-ADJ图片预览
型号: LM2703MF-ADJ
PDF下载: 下载PDF文件 查看货源
内容描述: 微功率升压型DC / DC转换器在350 mA峰值电流限制 [Micropower Step-up DC/DC Converter with 350mA Peak Current Limit]
分类和应用: 转换器开关光电二极管PC
文件页数/大小: 11 页 / 305 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
 浏览型号LM2703MF-ADJ的Datasheet PDF文件第2页浏览型号LM2703MF-ADJ的Datasheet PDF文件第3页浏览型号LM2703MF-ADJ的Datasheet PDF文件第4页浏览型号LM2703MF-ADJ的Datasheet PDF文件第5页浏览型号LM2703MF-ADJ的Datasheet PDF文件第6页浏览型号LM2703MF-ADJ的Datasheet PDF文件第7页浏览型号LM2703MF-ADJ的Datasheet PDF文件第8页浏览型号LM2703MF-ADJ的Datasheet PDF文件第9页  
LM2703 Micropower Step-up DC/DC Converter with 350mA Peak Current Limit
April 2003
LM2703
Micropower Step-up DC/DC Converter with 350mA Peak
Current Limit
General Description
The LM2703 is a micropower step-up DC/DC in a small
5-lead SOT-23 package. A current limited, fixed off-time
control scheme conserves operating current resulting in high
efficiency over a wide range of load conditions. The 21V
switch allows for output voltages as high as 20V. The low
400ns off-time permits the use of tiny, low profile inductors
and capacitors to minimize footprint and cost in space-
conscious portable applications. The LM2703 is ideal for
LCD panels requiring low current and high efficiency as well
as white LED applications for cellular phone back-lighting.
The LM2703 can drive up to 4 white LEDs from a single
Li-Ion battery.
Features
n
n
n
n
n
n
n
350mA, 0.7Ω, internal switch
Uses small surface mount components
Adjustable output voltage up to 20V
2.2V to 7V input range
Input undervoltage lockout
0.01µA shutdown current
Small 5-Lead SOT-23 package
Applications
n
n
n
n
n
LCD Bias Supplies
White LED Back-Lighting
Handheld Devices
Digital Cameras
Portable Applications
Typical Application Circuit
20030601
FIGURE 1. Typical 20V Application
© 2003 National Semiconductor Corporation
DS200306
www.national.com