pdf

PT4108 High Efficiency Boost High Brightness LED Driver

  • 2013-09-17
  • 241.13KB
  • Points it Requires : 1

The PT4108 is a compact, high efficiency, and low voltage step-up high brightness LED Driver with an Adaptive Current Mode PWM control loop. It comprises of an error amplifier, a ramp generator, a PWM comparator, a switch pass element and driver. It provides stable and high efficient operation over a wide range of load currents. The feedback loop is internallycompensated to minimize component size. It provides a constant current drive for 3W LED with 2 Alkaline Cells or 1 lithium cell. It limits the output voltage to 5V if the output load is disconnected. The 500KHz high switching rate reduces the size of external components.Besides, the 25μA low quiescent current together with high efficiency maintains long battery lifetime. The LED current is set with one external resistors.

unfold

You Might Like

Uploader
flexbuilder
 

Recommended ContentMore

Popular Components

Just Take a LookMore

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

About Us Customer Service Contact Information Datasheet Sitemap LatestNews


Room 1530, 15th Floor, Building B, No.18 Zhongguancun Street, Haidian District, Beijing, Postal Code: 100190 China Telephone: 008610 8235 0740

Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号
×