CAT3200／CAT3200-5 Charge-pump Driving White LED Circuit

Published:2011/7/13 7:34:00 Author:Michel | Keyword: Charge-pump, Driving, White LED Circuit | From:SeekIC

CAT3200 and CAT3200-5 are switch capacitor boost converter and it can output adjustable voltage with low noise.CAT3200-5's output voltage is fixed on 5 V, CAT3200 uses external resistance and the output voltage can be adjusted.Charge-pump with fixed frequency,2MHz is allowed to use small ceramic capacitors and a wider power supply input voltage range (2.7 ~ 4.5 V) can support up to 100 mA maximum output current.Shut-off control input function allows devices to enter closed mode, which makes the source current reduce to less than 1μA.In short-circuit or overload condition, the device gets turn-back current limit protection and overheating protection.In addition, soft start and the conversion rate control surge current when power is on.



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