This highly integrated PWM controller, FL7730, provides several features to enhance the performance of single-stage flyback converters. The proprietary TRUECURRENT® technology enables the simplified circuit design for LED lighting applications.TRIAC dimming is smoothly managed by dimming brightness control without flicker. By using single-stage topology with primary-side regulation, an LED lighting board can be implemented with few external components and minimized cost. It does not require an input bulk capacitor or feedback circuitry. To implement good power factor and low total harmonic distortion, constant on-time control is utilized with an external capacitor connected to the COMI pin.Precise constant-current control regulates accurate output current versus changes in input voltage and output voltage. The operating frequency is proportionally changed by the output voltage to guarantee Discontinuous Conduction Mode (DCM) operation with higher efficiency and simpler design. The FL7730 provides protections such as open-LED, short-LED, and over-temperature protections. Current-limit level is automatically reduced to minimize output current and protect external components in a short-LED condition.The FL7730 controller is available in an 8-pin SOP package.
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ONS
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ON SEMICONDUCTO
ON SEMICONDUCTORS
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OSC
ONSE
ON SEMICOND
ON Semiconductor / Fairchild
SCG
ON Semiconductor Cor
ON SEMICO
ONSM
ON SEMICONDUCTOR CORP
onsemi / Fairchild
MOT/ON SEMI
Fairchild/ONSemiconductor
ON Semiconductor Corporation
ON4
ON Semi - ON Semiconductor
ON SEMICONDUCT
ON-SEMI SCG
ON Semiconductor Inc.
onsemiconductor
On Semiconductor Ltd
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