AC-DC LED Drivers | FL7732

LED Driver, Single-Stage PFC Primary-Side-Regulation Offline

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Overview

This highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. The proprietary topology enables simplified circuit design for LED lighting applications.
By using single-stage topology with primary-side regulation, a LED lighting board can be implemented with few external components and minimized cost. No input bulk capacitor or feedback circuitry is required. To implement good power factor and low THD, 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 adjusted by the output voltage to guarantee DCM operation with higher efficiency and simpler design.
FL7732 provides open-LED, short-LED, and over-temperature protection features. The current limit level is automatically reduced to minimize output current and protect external components in a short-LED condition.
The FL7732 controller is available in an 8-pin SOP package.

  • Lighting
  • Cost-Effective Solution: No Input Bulk Capacitor or Feedback Circuitry
  • Power Factor Correction
  • Accurate Constant-Current (CC) Control, Independent Online Voltage, Output Voltage, and Magnetizing Inductance Variation
  • Linear Frequency Control Improves Efficiency and Simplifies Design
  • Open-LED Protection
  • Short-LED Protection
  • Cycle-by-Cycle Current Limiting
  • Over-Temperature Protection with Auto Restart
  • Low Startup Current: 20μA
  • Low Operating Current: 5mA
  • VDD Under-Voltage Lockout (UVLO)
  • Gate Output Maximum Voltage Clamped at 18V
  • Application Voltage Range: 80VAC ~ 308VAC
  • Replacement of Incandescent, CFL, and Linear Lamps
  • Retrofit E17/E26/E27 and PAR Lamps

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FL7732M-F116

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751EB

1

260

REEL

2500

N

-

17.5

308 VAC

18 VGATE

60/180 mA - Source/Sink

65

Price N/A

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