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The ISL85033 is a wide Vin dual output standard buck regulator with integrated high-side FETs. The input voltage range of 4.5 to 28V makes this part ideal for a wide range of applications such as set-top boxes, LCD TVs, and telecom servers. Each channel of the ISL85033 can support a continuous load current of 3 A while operating 180° out-of-phase from each other to significantly reduce the input filter requirements. The IC integrates current mode control, enabling fast transient response and in turn limiting the output capacitance needed. In addition to features like adjustable switching frequency in the range of 200 kHz to 2 MHz, independent power-good and enable, adjustable soft-start to limit in-rush current, and enable monotonic start-up, the ISL85033 also provides the customer with the capability of current sharing both channels to generate a single 6 A output. The IC is available in a small 28-lead 4 mm x 4 mm QFN package providing high power density at a lower overall solution cost compared to multiple, discrete single output ICs.

PTM Published on: 2016-01-19