500mA Low Dropout Regulator In Thin SOT-23 Package

An alternative to Micrel’s MIC5219 and MIC5319 LDO regulators, the CAT6219 offers a lower quiescent current combined with a low typical dropout voltage of 300mV at a 500mA load. Additionally, an external bypass capacitor reduces overall output noise making the device ideal for low noise applications. Many LDOs incorporating a bypass capacitor pay the penalty of slow “start up.” However, Catalyst’s device is designed with a “quick start” feature, which ensures a fast turn-on time of less than 150us and further optimizes the CAT6219 for low-power applications.

The CAT6219 is designed to eliminate battery drain when not in use by entering a “zero” current shutdown mode. Additionally, the device offers a low typical quiescent current of 55uA and protection against short-circuit and thermal overload fault conditions.

The CAT6219 low dropout regulator is priced at $0.28 each in 10,000 piece quantities. Samples are available now. Projected lead-time for production quantities is currently 6 to 8 weeks ARO.