The ZLED7020 and the ZLED7030 family of LED driver ICs operate at up to 98% efficiency, thus helping to achieve the highest possible lumen-per-watt output in high brightness LED applications. Both parts feature dimming over a 1,200:1 range and can drive LEDs with up to 1.2 A of current from a power supply as high as 40 V. The ZLED7030, specifically, offers a 2/3-step dimming switch with three configurable options eliminating the need for an external dimmer control.
Both devices include the 40-V switching transistor on-chip and offer high-side current sensing. Requiring only a current-sense resistor, a diode, an inductor and a capacitor for a complete driver both devices help to minimize the BOM. Built-in safeguards protect high-current and high-brightness LEDs with thermal-shutdown, open-circuit, and short-circuit protection. Operating from –40° to 105°C, the ZLED7020 comes in a SOT89-5 package and the ZLED7030 comes in a SOP-8 package. (Ea/5,000: ZLED7020, 0.57€; ZLED7030, 0.90€ — available now.)
By Christina Nickolas
ZMDI , Dresden , Germany
Information 49-351-8822-0
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