Cirrus Logic AN403 User Manual
An403, Features, General description
Copyright
Cirrus Logic, Inc. 2014
(All Rights Reserved)
Cirrus Logic, Inc.
3/14/13
UPDATED FOR DIMMER COMPATIBILITY
A1
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DESCRIPTION
DATE
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CRD1616-7W-28V
AN403
Design Example of CS1616
for 7W Dimmer-Compatible SSL Circuit
Features
• Supports Cirrus Logic CS1616
• Quasi-resonant FlybackTopology with Constant-
current Output
• Flicker-free Dimming
• Line Voltage: 207VAC - 253VAC
• Rated Input Power: 7W
• Rated Output Power: 5W
• Efficiency: ~82% at 175mA for 9xLEDs in Series
• Low Component Count
General Description
This application note provides an example of a Solid State
Lighting (SSL) LED lamp circuit designed using Cirrus
Logic’s CS1616, the CRD1616-7W-28V. The CRD1616-
7W-28V reference design demonstrates the performance
of the CS1616 resonant mode AC/DC LED driver IC with a
175mA output driving 9xLEDs in series. It offers best-in-
class dimmer compatibility and minimum dimming
performance with leading-edge, trailing-edge, and digital
dimmers. The form factor is targeted to fit into many LED
bulb applications (A19-type, PAR).
AUG‘14
AN403