Diodes Releases New LED Drivers for Single Cell Applications

Diodes has launched two new LED drivers, namely, ZXLD381 and ZXLD383 that offer simple solutions to LED lights. The LED drivers help to drive low power LEDs having high brightness that consume power from a single rechargeable battery or a solar cell.

The LED drivers are PFM DC-DC converters that feature a low saturation transistor for voltage switching. Hence, the drivers require only an inductor to offer LED illumination with high efficiency. The ZXLD381 and ZXLD383 LED drivers have the ability to work under a minimum input voltage of 0.9 V and deliver a maximum output of 80 mA. The LED drivers provide constant current for both single and multiple LEDs, however depending on the external inductor value.

As the LED drivers can provide up to 93% efficiency, they enable the extension of the battery life under various lighting applications. Along with the features of the ZXLD381, the ZXLD383 LED driver incorporates a dual function enable input. The input offers an inhibit control as well as a low-voltage drop isolation diode for charging the batteries in garden lights. The ZXLD383 driver is suitable for applications in solar-powered walkaway and garden lamps, as it eradicates the need to employ an external photocell array isolation diode.