Reguladores de tensão - Reguladores de comutação

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ISL85003/ISL85003A Synchronous Buck Regulators

Renesas Electronics ISL85003/ISL85003A Synchronous Buck Regulators are synchronous buck regulators with integrated high-side and low-side FETs. The regulator can operate from an input voltage range of 4.5V to 18V while delivering a very efficient continuous 3A current. This is all delivered in a very compact 4x3mm DFN package. The ISL85003 is designed on Intersil's proprietary fab process that is designed to deliver very low R_DS(ON) FET's with an optimized current mode controller wrapped around it. The high-side NFET is designed to have an R_DS(ON) of 65mΩ while the low-side NFET is designed to have an R_DS(ON) of 45mΩ. With these two FET's, the device delivers very high-efficiency power to the load. The ISL85003 can automatically switch between DCM and CCM for light-load efficiency in DCM. The switching frequency in CCM is internally set to 500kHz.

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