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Fairchild Semiconductor - Primary-Side-Regulated LED Driver

Numéro de référence FL6632MX
Description Primary-Side-Regulated LED Driver
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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FL6632MX fiche technique
May 2015
FL6632
Primary-Side-Regulated LED Driver with Power Factor
Correction
Features
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: 20 μA
Low Operating Current: 5 mA
VDD Under-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 18V
SOP-8 Package
Application Voltage Range: 80 VAC ~ 308 VAC
Description
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.
FL6632 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 FL6632 controller is available in an 8-pin Small-
Outline Package (SOP).
Applications
LED Lighting System
Ordering Information
Part Number
FL6632MX
Operating
Temperature Range
Package
-40°C to +125°C 8-Lead, Small Outline Integrated Circuit Package (SOIC)
Packing
Method
Tape & Reel
© 2015 Fairchild Semiconductor Corporation
FL6632 • Rev. 1.0
www.fairchildsemi.com

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