FL7732: LED Driver, Single-Stage PFC Primary-Side-Regulation Offline
Description: This highly integrated PWM controller provides sev...
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.
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
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
Technical Documentation & Design Resources
Availability and Samples
Compliance: Pb-free Halide free
Description: LED Driver, Single-Stage PFC Primary-Side-Regulation Offline
Package Type: SOIC-8
Package Case Outline: 751EB
Container Type: REEL
Container Qty: 2500
VI Min (V):
VI Max (V):
VO Max (V):
IO Max (mA):
60/180 mA - Source/Sink
fSW Typ (kHz):