代理PT4201设计的离线式LED射灯技术

地区:广东 深圳
认证:

深圳市百盛新纪元半导体有限公司

普通会员

全部产品 进入商铺

百盛电子代理经销上海华润矽威系列产品,一系列均可提前订货取品和资料销售产品咨询请:QQ1585783439  公司网站www.szparkson.net

 

GENERAL DEION

The PT4108 is a compact, high efficient, 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. It operates in stable waveforms without external compensation. The low start-up input voltage below 1V makes it suitable for 1~4 battery cells. The 500KHz high switching rate reduces the size of external components. Besides, the 25?A low quiescent current together with high efficiency maintains long battery lifetime. The output current set by the external high precision resistor.

FEATURES

¨ Low Quiescent (Switch-off) Supply Current: 25?A

¨ Low Start-up Input Voltage: 1.0V

¨ High efficiency: 86%

¨ Fixed switching frequency: 500KHz

APPLICATIONS

¨ Portable Lighting

¨ Flashlights

TYPICAL APPLICATIONS

 
型号/规格

PT4201

品牌/商标

上海华润矽威