ACT801
Product Brief, 22-Oct-12
Active Direct Drive™ LED Driver
FEATURES
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Highest Efficiency Solution Up to 8W
High Power Factor (> 0.90)
Low Total Harmonic Distortion
Low Component Count
Low EMI
Low Crest Factor
No Flicker
Low Strobe Light Motion Effect
No Electrolytic Capacitor
No Magnetic Components
Over Temperature Protection
Over Current Protection
Brightness Stability over AC Line Voltage
Variation
EP (Exposed Pad) Package
GENERAL DESCRIPTION
The ACT801 are LED driver ICs based on Active-
Semi's Patented Active Direct Drive
TM
Technology
and Patent-Pending Active Valley Fill
TM
that
adaptively drives a string of variable-weighted LED
segments up to 8W directly from an AC line voltage
with very few total components. By adaptively
modulating the variable-segment-weighted LED
string voltage to match the varying AC line voltage,
the Active Direct Drive
TM
Technology results in the
ACT801 having highest efficiency, high power
factor (> 0.90), and low total harmonic distortion.
The high efficiency and high performance make the
ACT801 ideal for advanced energy saving solid
state lighting applications and eases thermal
design.
With very few external components, the ACT801
ensures high reliability and long life time for LED-
based luminaire designs. In addition, the IC protects
the LEDs from over current, and over temperature
conditions. The ACT801 are optimized to operate at
100-120VAC and non-dimmable application up to
8W.
The ACT801 also incorporate Active-Semi's Patent-
Pending Active Valley Fill
TM
Technology for
maintaining smooth light output for the full AC cycle,
enabling the LEDs to operate without noticeable
flicker or strobe light motion effects. These devices
drive the LED string without high frequency
switching.
The ACT801 are available in the SOP-16EP
package.
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Space-Saving, Thermally-Enhanced SOP-16
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ACT801 for 100-120VAC Application
APPLICATIONS
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Solid State Lighting (SSL)
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LED Light Bulbs
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Replacement of Lamps for 100-120VAC
TYPICAL APPLICATION DIAGRAM
Innovative Power
TM
-1-
Active Direct Drive™ and Active Valley Fill™ are trademarks of Active-Semi
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
