微桥科技产品新闻动态管理发布系统 现在是
首页 ·公司动态 ·产品动态 ·原厂动态 ·行业动态 ·技术资料 ·LED驱动 ·DC-DC ·AC-DC ·MOSFET ·音频功放 ·电池管理 ·霍尔及马达驱动 ·其他 ·联系我们

当前位置:首页>>LED驱动>>CRpowtech华润矽威 >>PT4110-High Efficiency White LED Driver   双击自动滚屏
发布者:微桥 发布时间:2010-1-9 阅读:6573次    关键字: PT4110
PT4110-High Efficiency White LED Driver


PT4110-High Efficiency White LED Driver PDF文档下载

http://www.micro-bridge.com/data/CRpowtech/PT4110应用说明.pdf

GENERAL DESCRIPTION
 

The PT4110 is a high efficiency step-up DC/DC converter designed for driving multiple strings of up to six series-connected white LED from a single cell Lithium Ion battery. It regulates the output current, ideal for driving light emitting diodes (LED) whose light intensity is proportional to the current passing through them. The external ballast resistor sets the LED current ranging from 5mA to 20mA, which can be easily adjusted using either a DC voltage or a pulse width modulated (PWM) signal alternatively. Its low 300mV feedback voltage reduces power loss and improves efficiency.

The PT4110 has multiple features to protect itself from fault conditions including built-in over voltage protection, cycle-by-cycle current limit, over temperature shutdown, input under voltage control and integrated soft-start.

The PT4110 is available in SOT-89-5 and SOP-8 packages.
 
FEATURES
 

¨          2.7V to 5.5V Input Voltage Range

¨          35V Maximum Step-Up Voltage

¨          <1µA Shutdown Mode

¨          1.2MHz Fixed Frequency Operation

¨          Cycle-By-Cycle Current Limit

¨          Over Voltage Protection

¨          Under Voltage Lockout

¨          Integrated Soft-Start

¨          Thermal Shutdown

¨          Frequency Jittering for better EMI performance

¨          SOT89-5 or SOP8 package
 
APPLICATIONS
 

¨          White LED Power Suppliers

¨          Flat Screen LCD Bias Suppliers

¨          Portable Media Players

¨          GPSs

¨          General middle-sized LCD backligh
 
TYPICAL APPLICATIONS
 

本文共分 1

  • 上篇文章SPN7002L-N-Channel Enhancement Mode MOSFET
  • 下篇文章3 channels (PT4401) and 4 channels (PT4402)
  •  
     

    版权所有 Copyright Micro Bridge Technology Co.,Ltd. All rights reserved.粤ICP备05065909号