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FAN7318A Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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FAN7318A Datasheet(HTML) 2 Page - Fairchild Semiconductor |
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2 / 24 page  © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN7318A • 1.0.0 2 Block Diagram ADIM Negative Analog Dimming Protection Error Amp. max. 2V min. 0.5V 5V, max. 3mA UVLO 5.5V Voltage Reference & Internal Bias REF VIN CT CMP 2V Control Logic BCT BDIM OUTB OUTA GND - + 0.3V - + 1.34V Short-Lamp Protection Over-Voltage Protection OLP1 - + On @ striking OLR2 OLR1 OLP2 Output Driver Oscillator Min. & Max. Detector /Full Wave Recifier Max. Min. TSD 150oC - + Hys. 0.45V - + max. 2V min. 0.5V 52μA burst sink current on 3.5V High CMP Protection disable @ striking High_CMP - + 150μs Delay Striking off OLP Striking/normal Min. & Max. Detector /Full or Half Wave Rectifier OLP max. OLP min. 0.7V/0.5V - + 17 Pulses Counter And OLR<1.4V - + Error. Amp. source current change 1.35V ENA 200k 1.34V - + - + 2.2V Open-Lamp Regulation Gm Amp. 3μA Error. Amp. source current change 0μA TIMER disable @ striking 52μA burst sink current on If ENA>2.5V, OLP & SLP disable. If ENA<2.1V, OLP & SLP enable. Vref 50µA @ OVP,SLP 2µA @ OLP.CMP high 3V/1V @ striking/normal Figure 1. Internal Block Diagram |
Similar Part No. - FAN7318A |
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Similar Description - FAN7318A |
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