AC-DC LED Drivers | NCL30083
步进调光准谐振初级侧电流模式控制器，用于温度折回的 LED 照明
Obsolete
概览
NCL30083 是一款 PWM 电流模式控制器，用于隔离反激和非隔离降压-升压恒定电流拓扑结构。该控制器以准谐振模式运行，可提供高能效。由于采用新型控制方法，该器件能够精确调节初级侧的恒定 LED 电流。因此无需辅助侧反馈电路、偏置和光耦合器。该器件与极少数量的外部部件进行高度集成。 内置了一组强大的安全保护功能，简化了设计。 该器件支持 5 步日志调暗至 5%。 为了延长系统寿命，它在用户可编程温度点具有电流折回功能。NCL30083 集成了固定过电压保护，设计人员可以选择编程更低的过电压保护电平。
- Line Powered LED Drivers
- Integral Driver Electronics
- Integral LED Bulbs and downlights
- LED Light Engines
- Electronic Control Gear for LEDs
- Primary Side Sensing
- Wide VCC Range
- Precise LED Current Regulation of ±1% typical
- ~ 0.9 power factor with passive valley fill
- User Programmable Thermal Foldback
- Open and Shorted Output Protection
- Secondary Diode Short Protection
- 5 Step Dimmable to < 5% output current
- VCC undervoltage and overvoltage protection
- Latched (A version) and Auto-recoverable (B version) fault handling
- Wide temperature range of -40 to 125 °C
- Input Line Voltage Sensing
- Programmable Soft start
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