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FL7701

Part Number	FL7701
Manufacturer	Fairchild Semiconductor
Description	Smart LED Lamp Driver
Published	Feb 26, 2015
Detailed Description	FL7701 — Smart LED Lamp Driver IC with PFC Function June 2013 FL7701 Smart LED Lamp Driver IC with PFC Function Featu...
Datasheet	FL7701 PDF File

Overview

FL7701 — Smart LED Lamp Driver IC with PFC Function June 2013 FL7701 Smart LED Lamp Driver IC with PFC Function Features  Digitally Implemented Active PFC Function (No Additional Circuit Necessary for High PF)  Built-in HV Supplying Circuit: Self Biasing  Application Input Range: 80 VAC ~ 308 VAC  AOCP Function with Auto-Restart Mode  Built-in Over-Temperature Protection Function  Cycle-by-Cycle Current Limit  Current-Sense Pin Open Protection  Low Operating Current: 0.
85 mA (Typical)  Under-Voltage Lockout with 5 V Hysteresis  Programmable Oscillation Frequency  Programmable LED Current  Analog Dimming Function  Soft-Start Function  Precise Internal Reference: ±3% Applications  LED Lamp for Decorative Lighting  LED Lamp for Low-Power Lighting Description The FL7701 LED lamp driver is a simple IC with PFC function.
The special “adopted digital” technique of the IC can automatically detect input voltage condition and send an internal reference signal for achieving high power factor.
When AC input is applied to the IC, PFC function is automatically enabled.
Otherwise, when DC input is applied to the IC, PFC function is automatically disabled.
The FL7701 does not need a bulk capacitor (electrolytic capacitor) for supply rail stability, which can significantly affect to LED lamp system.
Related Resources  Evaluation Board: FEBFL7701_L30U003A Ordering Information Part Number Operating Temperature Range FL7701MX -40°C to +125°C Package Packing Method 8-Lead, Small Outline Integrated Circuit (SOIC), JEDEC MS-012, .
150-inch Narrow Body Tape & Reel © 2011 Fairchild Semiconductor Corporation FL7701 • Rev.
1.
0.
4 www.
fairchildsemi.
com FL7701 — Smart LED Lamp Driver IC with PFC Function Application Diagram BD L1 Fuse C1 C2 C3 CS HV OUT NV VCC GND RT ADIM R1 U1 D1 D2 R2 LED L3 Q1 C4 R3 L2 Figure 1.
Typical Application Block Diagram VCC 3 VCC ZCD IAD time ZCD UVLO JFET ADIM 5 DAC Soft start Digital Block RT 4 Oscillator Referenc...

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