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Programmable LED driver ICs enable digital dimming, wireless control and sensor control

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By eeNews Europe


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The first device from the smarteXite family, the iW6401, supports multiple dimming interfaces, including digital dimming via a simple main on/off switch, the new Ledotron digital dimming protocol and toggle-switch based dimming. All dimming-curves can be memory-configured to enable a highly optimised end-user lighting experience. The integrated digital loadline transmission (DLT) receiver in the iW6401 supports the Ledotron IEC 62756-1 dimming protocol, making it the world’s first single-chip plug-and-play Ledotron solution.

Using a standard I2C digital interface, the iW6401 can serve as a frontend for wireless communication modules like low-energy Bluetooth, Wi-Fi or ZigBee. Additionally, intelligent sensor devices enabling colour- or proximity-sensing can be directly connected. When such a peripheral device is used, the integrated power management unit in the iW6401 provides a stable power source, reducing the external component count and cost. The iW6401 is claimed to be the world’s first programmable AC/DC retrofit LED lamp driver IC, allowing engineers to design and configure the bulb design via software with an optimised bill of material.

SmarteXite supports final stage digital calibration on the production line where the bulb manufacturers can reconfigure the illumination calibration settings like brightness and colour via the A/C mains terminals. This allows lower tolerance LEDs to be used with less binning or waste of LED’s. Additionally, using this final stage calibration feature, the adjustment of the LED currents can be done even in the installed state, making the smarteXite platform also ideal for Zhaga compliant power supplies. The iW6401 can be configured to actively manage the lamp temperature using either an on-chip or off-chip temperature sensor together with configurable state temperature control.

Visit Dialog Semiconductor at www.dialog-semiconductor.com

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