Wednesday 24 October 2007
Regulator
Hernan Alcerreca
Catalyst Semiconductor announced its newest low dropout (LDO) regulator—the CAT6221 300mA, dual-output LDO. The CAT6221 integrates two 300mA regulators in a tiny, 6-lead, 0.8mm height TSOT-23 package, providing a smaller, cost-effective option for mobile phones, battery-powered devices and other portable consumer products requiring two LDOs.
Each LDO in the CAT6221 has an independent enable pin and, combined, offer low quiescent current, 1 percent initial accuracy, and a low typical dropout voltage of 210mV at a 300mA load. Zero shutdown current, a low quiescent current of 100uA reduce power, and small 1uF ceramic output capacitors provide stable operation and minimise board space and component costs.
Additional features include fold-back current limit and protection against short-circuit and thermal overload fault conditions. CAT6221 LDO regulator is available in standard output voltage combinations of 2.8V/1.8V and 3.3V/1.8V. Additional output voltage combinations are available as special orders.
Catalyst Semiconductor
www.catsemi.com.
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