MB39C603

Phase Dimmable PSR LED Driver IC

for LED Lighting

Cypress Semiconductor Corporation

•

198 Champion Court

•

San Jose

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408-943-2600

Document Number: 002-08450 Rev. *B

Revised May 22, 2017

Description

MB39C603 is a Primary Side Regulation (PSR) LED driver IC for LED lighting. Using the information of the primary peak current and

the transformer-energy-zero time, it is able to deliver a well regulated current to the secondary side without using an opto-coupler in

an isolated flyback topology. Operating in critical conduction mode, a smaller transformer is required. In addition, MB39C603 has a

built-in phase dimmable circuit and can constitute flicker less lighting systems for phase dimming with low-component count. It is

most suitable for the general lighting applications, for example replacement of commercial and residential incandescent lamps.

Features



Dimming curve based on conduction angle



Dimmer hold current control



Under voltage lock out (UVLO)



Over voltage protection (OVP)



Over current protection (OCP)



Over temperature protection (OTP)

Applications