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