Non-isolated Buck LED Two-Three Stage Switch Dimming Regulator

JW®1881B是一款高精度降压型LED分段开关恒流驱动芯片。可以通过外部引脚设置来实现二、三段调光。芯片工作在电感电流临界连续和断续模式，适用于85Vac～265Vac全范围输入电压的非隔离降压型LED恒流电源。\n\n JW1881B可以选用二段或者三段调光，二段调光分别为100%，15%循环变化，三段调光分别为100%，40%，15%循环变化。当开关关闭的时间超过 5S，芯片就会重启到第一次开关上电状态。\n\n 芯片内部集成500V功率开关，芯片的工作电流极低，无需辅助绕组检测和供电，只需要很少的外围元件，即可实现优异的恒流特 1. 二段、三段可选开关调光\n2. 内置500V功率MOSFET\n3. 无需辅助绕组供电\n4. ±3%的LED输出电流精度\n5. 宽输入电压\n6. LED 短路保护和开路保护\n7. CS电阻短路保护\n8. 芯片供电欠压保护\n9. 过热调节功能\n10. SOP7, DIP7封装;

JoulWatt

杰华特

Three-Phase Brushless Motor Driver IC

Overview The LB1881M is a three-phase brushless motor driver IC designed for use as a camcorder capstan or drum motor driver, or as a digital audio tape player/recorder motor driver. Features • 120° voltage linear system • Appropriate for portable applications, since the LB1881M reduces system

文件：115.34 Kbytes 页数：6 Pages

SANYO

三洋

Three-Phase Brushless Motor Driver

Overview The LB1881V is a three-phase brushless motor driver IC designed for use as a camcorder capstan or drum motor driver, or as a digital audio tape player/recorder motor driver. Features • 120° voltage linear system • Appropriate for portable applications, since the LB1881V reduces system

文件：142.99 Kbytes 页数：6 Pages

SANYO

三洋

LM1881 Video Sync Separator

文件：303.17 Kbytes 页数：12 Pages

NSC

国半