FL77905数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The FL77905 is a direct AC line LED driver with minimal number of external RC passive components. In normal configuration, one resistor is to adjust LED power, and one capacitor is to provide a stable voltage to an internal biasing shunt regulator.
It achieves high efficiency with high PF and low THD which makes the FL77905 suitable for high-efficiency LED lighting systems. The FL77905 can also be used with a rheostat dimmer switches which are suitable for desktop or indoor lamps.
The FL77905 has a dedicated DIM pin which is designed to be used with analog or digital PWM dimming.

特性 Features

• The simplest Direct AC LED Driver with Only Two External RC Passive Components
• Wide AC Input Range: 90~305 VAC
• Analog/PWM Dimming
• High Power Factor (above 0.98 in normal configuration) Low Harmonic Content (THD under 20% in normal configuration)
• Low Flicker Index by Self Valley Fill with No Degradation of PF and THD
• Adjustable LED Power with an External Current Sense Resistor
• Rheostat Dimmable Flexible LED Forward Voltage Configuration
• Power Scalability with Multiple Driver ICs
• Over-Temperature Protection (OTP)

应用 Application

• LED 照明 — 中功率 — 模拟/PWM 调光
• LED 照明 — 中功率 — 相位切割调光
• LED 照明 — 低功率 — 相位切割调光

简介

FL77905属于集成电路（IC）的LED驱动器。由制造生产的FL77905LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。