供应PAM2863-手电筒专用恒流降压LED驱动IC

概述： PAM2863是一款于连续工作模式下的降压转换器,内置MOS管及高精度电流检测器(0.1V的极低电流检测电压);能通过外置电阻设定输出电流,最大电流可达2A,恒流输出精度2%。可选择软开关,高达1M Hz开关频率。具软开关、开路保护、过温保护、过热关段、短路等保护功能.特点：                                                              ◆2A恒流输出电流◆通过DC直流电压加到FB端对LED亮度进行细调或PWM信号加到SHDN                                                           ◆LED功能效率达97%◆输出恒流精度2％◆软启动◆低启动电压：0.9V（Iled=270mA）                                                                                               ◆低维持电压：0.75V（LED电流=200mA）                                                                                   ◆内部40V NDMOS开关                                                                                                             ◆开路保护、过温保护、过热关段、短路等保护功能                                                                              适用范围：                                                                        LED大功率手电筒，LED照明灯具等                                                                     封装：SOP-8(EP),最小包装2.5K，绿色无铅封装。