FL7730

Dimmable Single-Stage PFC PSR Offline LED Driver

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.

Features

  • Compatible with Traditional TRIAC Control (No need to change existing lamp infrastructure: wall switch & wire)
  • Compatible with Non-Dimming Lamp Designs
  • Cost-Effective Solution without Input Bulk Capacitor and Feedback Circuitry
  • Power Factor Correction (PFC)
  • Accurate Constant-Current (CC) Control, Independent Online Voltage, Output Voltage, Magnetizing Inductance Variation
  • Line Voltage Compensation for CC Control
  • Linear Frequency Control for Better Efficiency and Simple Design
  • Open-LED Protection
  • Short-LED Protection
  • Cycle-by-Cycle Current Limiting
  • Over-Temperature Protection with Auto Restart
  • Low Startup Current: 20 μA
  • Low Operating Current: 5 mA
  • SOP-8 Package Available
  • Application Voltage Range: 80 VAC ~ 308 VAC
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Product Product &
Eco Status
Unit Price/
1K Order
Packing Method Convention Package Marking
Convention*
Qualification
Support
Compliance
Certificates
FL7730MY_F116 Full Production
Green as of Mar 2012
 China RoHS
$0.676

SO 8L NB  -  Details
1.75 x 3.9 x 4.9mm,  TAPE REEL

PDF SO 8L NB  Drawing
Last Update: Nov 2015 PDF MO8A SON8, Packing Drawing
Last Update: Oct 2015 PDF SOIC 8L TR packing drawing
Last Update: May 2013 PDF SOIC 8L PACKING DRAWING
Last Update: May 2013 PDF SOIC 8L PACKING DRAWING
Last Update: May 2013 PDF SOIC Tape And Reel Packing Drawing
Last Update: Jun 2016
Line 1$Y (Fairchild logo)
&Z (Plant Code)
&2 (2-Digit Date Code)
&K

Line 27730

Line 3MYD

FIT [Calculate] 2.37 @55°C
MTBF 4.22E8

Moisture Sensitivity Level (MSL) 1

Max Reflow Temp 260

PDF RoHS IPC1752
XML RoHS IPC1752
PDF RoHS/REACH/JIG
PDF China RoHS

If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
* Click here for further top mark packaging information for FL7730

  • Lighting
Application Document Number Featured Products Output
Power
Input
Voltage
Topology
LED Lighting PDFRD-L021H
16.8 W 180 - 265 V<sub>AC</sub> PFC PSR Flyback
LED Lighting PDFRD-L020L 8.4 W 90 - 140 V<sub>AC</sub> PFC PSR Flyback
LED Lighting PDFRD-L020H 8.4 W 180 - 265 V<sub>AC</sub> PFC PSR Flyback
LED Lighting PDFRD-L021L 16.8 W 90 - 140 V<sub>AC</sub> PFC PSR Flyback
Application Note Description
AN-FEB020L PDFUser Guide for FEBFL7730_L20L008B Evaluation Board Low Line 7.8W LED Driver (PFC PSR Flyback)
Last Update : 04-Oct-2013
AN-FEBL021H PDFUser Guide for FEBFL7730_L21H017A Evaluation Board High Line 17W LED Driver (PFC PSR Flyback)
Last Update : 13-Sep-2012
AN-FEBL021L PDFUser Guide for FEBFL7730_L21L017A Evaluation Board Low Line 17W LED Driver (PFC PSR Flyback)
Last Update : 12-Sep-2012
AN-7730 PDFFL7730 Design Tool Flow
Last Update : 28-Jun-2014
AN-FEB020H PDFUser Guide for FEBFL7730_L20H008B Evaluation Board High Line 7.8W LED Driver (PFC PSR Flyback)
Last Update : 20-Aug-2012
AN-9745 PDFDesign Guide for TRIAC Dimmable LED Driver Using FL7730
Last Update : 30-Oct-2014

Distributor Inventory

Product Distributor Quantity Cart RFQ Inventory Date

Fairchild Product Availability (Projected Cumulative Factory Inventory)

Product Product Availability Date Total Projected Inventory
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Product
Ea
(0.3 - 1.4)
Confidence
(0.6-0.9)
T use (°C)
T Stress (°C)
Kt (eV/K)
Device Hours
@ T Stress
(devices*hours)
Rejects
(devices)
Chi
Square
Acceleration
Factor
FIT @ T use
MTBF @ T
use (hours)
FL7730MY_F116 0.7 0.6 55 150 8.62E-05 1490272.45 0 1.83 259.24 2.37
Run new FIT calculation
4.22E8