VAS1085B恒流led驅動器

LED線性恒流IC廣告燈箱景觀照明VAS1085 VAS1085B是一款寬輸入范圍的恒流LED驅動器，為廣告燈箱，景觀照明等LED照明應用提供了經(jīng)濟高效的解決方案。對于大多數(shù)應用，VAS1085B只需要從SET到GND的一個電流設置電阻，一個陶瓷旁路電容從VIN到GND，不需要鋁電容，肖特基二極管或電感。對于高電流應用，幾個VAS1085B可以并聯(lián)連接，以獲得高功率輸出。

　　VAS1085B is a wide input range constant current LED driver provides cost-effective solution for advertising light boxes， landscape lighting and other LED illumination application. For most applications， VAS1085B only need one current setting resistor from SET to GND， and one ceramic bypass capacitor from VIN to GND， no aluminum capacitor， Schottky diode or inductor needed. For high current application， several VAS1085B can be connected in parallel to obtain high power output. VAS1085B make use of an external power resistor to reduce chip power dissipation when poor power supply is used. Meanwhile， the VAS1085B will automatically reduce linearly the output current when the die temperatures reached 120°C， this method avoid LED bar blinking. Over temperature protection is also be integrated. VAS1085B is available with DFN6L package.