LED-driver ICs deliver accurate output power to 12 W
LYTSwitch-2 LED-driver ICs use primary-side control, resulting in cost-effective, single-sided PCBs with low component counts. In addition, driver isolation allows the LEDs to be affixed directly to a metal heat sink, avoiding the added expense of an electrically isolating enclosure that is often required for non-isolated drivers. Accurate constant-current (CC) output tolerance across temperature (better than +/-5% at both low-line and high-line voltages) reduces the need to over-design systems in order to meet requirements such as the U.S. ENERGY STAR minimum-lumens-delivered specification. Designs using LYTSwitch-2 ICs are also highly efficient – up to 90% in typical applications.
LYTSwitch-2 ICs protect the LED load from surges in line voltage, increasing bulb lifetime in regions where the mains voltage is subject to frequent peaks. The constant-current and constant-voltage (CC/CV) control function maintains a constant voltage on the output of the driver during no-load operation, preventing damage to the output filter or shutting down the driver when being tested or installed with no LED string connected.
The LYTSwitch-2 LED-driver ICs can be used as a platform to create products from 1 W to 12 W, and they are ideal for low-cost bulbs, ballasts, down-lights and tubes. Because of the IC’s stability and closely controlled part-to-part variation.
The LED-driver ICs feature over-temperature, over-current and open feedback-loop protection and are simple to design in using Power Integrations ’ PI Expert design software. Devices are packaged in small, cost-efficient SO-8 packages as well as MSOP and eSIP packages for efficient thermal transfer in higher-power applications.
LYTSwitch-2 IC pricing starts at 0.52 for SO-8 devices in 10K quantities.
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