FL77944 Datasheet | Analog/PWM/Phase-cut Dimmable High Power LED Direct AC Driver





(Datasheet) FL77944 Datasheet PDF Download

Part Number FL77944
Description Analog/PWM/Phase-cut Dimmable High Power LED Direct AC Driver
Manufacture Fairchild Semiconductor
Total Page 11 Pages
PDF Download Download FL77944 Datasheet PDF

Features: FL77944 — Analog/PWM/Phase-cut Dimmabl e High Power LED Direct AC Driver July 2016 FL77944 Analog/PWM/Phase-cut Dim mable High Power LED Direct AC Driver Features  The simplest Direct AC LED Driver with Only Two External RC Passi ve Component  Wide AC Input Range: 9 0~305 VAC  Four Integrated High-Volt age LED Constant Current Sinks of up to 150 mA (RMS) Capability  TRIAC Dimm able (Leading/Trailing Edge)  Rheost at Dimmable  Analog/Digital PWM Dimm ing Function  High Power Factor (abo ve 0.98 typically)  Adjustable LED P ower with an External Current Sense Res istor  Low Harmonic Content (THD und er 20% typically)  SOIC-16 EP Packag e  Flexible LED Forward Voltage Conf iguration  Power Scalability with Mu ltiple Driver ICs  Over-Temperature Protection (OTP) Description The FL779 44 is a direct AC line LED driver with a minimal number of external RC passive components. In normal configuration, o ne resistor is to adjust LED power, and one capacitor is to provide a stable voltage to an .

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July 2016
FL77944
Analog/PWM/Phase-cut Dimmable High Power LED
Direct AC Driver
Features
The simplest Direct AC LED Driver with Only Two
External RC Passive Component
Wide AC Input Range: 90~305 VAC
Four Integrated High-Voltage LED Constant
Current Sinks of up to 150 mA (RMS) Capability
TRIAC Dimmable (Leading/Trailing Edge)
Rheostat Dimmable
Analog/Digital PWM Dimming Function
High Power Factor (above 0.98 typically)
Adjustable LED Power with an External Current
Sense Resistor
Low Harmonic Content (THD under 20% typically)
SOIC-16 EP Package
Flexible LED Forward Voltage Configuration
Power Scalability with Multiple Driver ICs
Over-Temperature Protection (OTP)
Description
The FL77944 is a direct AC line LED driver with a
minimal number of external RC passive components. In
normal configuration, one resistor is to adjust LED
power, and one capacitor is to provide a stable voltage
to an internal biasing shunt regulator.
The FL77944 provides phase-cut dimming with wide
dimming range, smooth dimming control and good
dimmer compatibility. It achieves high efficiency with
high PF and low THD, which makes the FL77944
suitable for high-efficiency LED lighting systems. The
FL77944 has a dedicated DIM pin which can be used
with analog or digital PWM dimming. The FL77944 can
also be used with a rheostat dimmer switch which is
suitable for desktop or indoor lamps.
Operation of FL77944 admits driving higher-wattage
systems, such as street lights and down lights, by
simply parallel connecting the driver ICs.
Applications
General LED Driving Solution for Residential,
Commercial and Industrial Lighting
Ordering Information
Part Number
FL77944MX
Operating
Temperature Range
-40 to 125°C
Package
16-Lead, Small Outline Integrated Circuit
(SOIC) Exposed Dap 150” Narrow Body
Packing
Method
2,500 per Reel
© 2016 Fairchild Semiconductor Corporation
FL77944 • Rev. 1.2
www.fairchildsemi.com

                    
           






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