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FL7701 Dataheets PDF



Part Number FL7701
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Smart LED Lamp Driver
Datasheet FL7701 DatasheetFL7701 Datasheet (PDF)

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).

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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 Reference GND 6 TSD SQ R + LEB Leading Edge Blanking 2.5V + AOCP Figure 2. Block Diagram 8 HV 2 OUT 1 CS © 2011 Fairchild Semiconductor Corporation FL7701 • Rev. 1.0.4 2 www.fairchildsemi.com FL7701 — Smart LED Lamp Driver IC with PFC Function FL7701 Pin Configuration CS OUT VCC RT HV NV GND ADIM Figure 3. Pin Configuration Pin Definitions Pin # 1 2 3 4 5 6 7 8 Name CS OUT VCC RT ADIM GND NC HV Description Current Sense. Limits output current depending on the sensing resistor voltage. The CS pin is also used to set the LED current regulation OUT. Connects to the MOSFET gate. VCC. Supply pin for stable IC operation ZCD signal detection used for accurate PFC function. RT. Programmable operating frequency using external resistor and the IC has pre-fixed frequency when this pin is open or floating. Analog Dimming. Connect to the internal current source and can change the output current using an external resistor. If ADIM is not used, it is recommended to connect a 0.1 µF bypass capacitor between the ADIM and GND. GROUND. Ground for the IC. No Connection High Voltage. Connect to the high voltage line and supply current to the IC © 2011 Fairchild Semiconductor Corporation FL7701 • Rev. 1.0.4 3 www.fairchildsemi.com FL7701 — Smart LED Lamp Driver IC with PFC Function Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Min. Max. Unit VCC IC Supply Voltage HV High Voltage Sensing 20 V 500 V IO+/IOVADIM VRT VCS TA TJ TSTG θJA PD ESD Peak Drive Output Current (Sourcing / Sinking) Analog Dimming RT Pin Voltage Allowable Current Sensing Detection Voltage Operating Ambient Temperature Range Operating Junction Temperature Storage Temperature Range Thermal Resistance Junction-Air(1,2) Power Dissipation Human Body Model, JESD22-A114 Electrostatic Discharge Capability Charged Device Model, JESD22-C101 -40 -40 -65 250 5 5 5 +125 +150 +150 135 660 2000 1000 mA V V V C C C C/W mW V Notes: 1. Thermal resistance test board. Size: 76.2 mm x 114.3 mm x 1.6 mm (1S0P); JEDEC standard: JESD51-2, JESD51- 3. 2. Assume no ambient airflow. © 2011 Fairchild Semiconductor Corporation FL7701 • Rev. 1.0.4 4 www.fairchildsemi.com FL7701 — Smart LED Lamp Driver IC with PFC Function Electrical Characteristics Typical values are at TA = +25°C. Specifications to -40°C ~ 125°C are guaranteed by design based on final characterization results. Symbol Parameter VCC Bias Section VCC VCC Regulator Output Voltage VCCST+ UVLO Positive Going Threshold VCCST- UVLO Negative Going Threshold VCCHY UVLO Hysteresis IHV HV Pin Current IST Startup Current Switching Section Conditions Min..


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