Intersil recently announced the release of a new family of high efficiency, 2 A integrated FET step-down DC-DC switching regulators that support wide operating input voltages and can handle transient spikes up to 100 V.
The ISL8560 supports an input voltage range of 9 V to 60 V with programmable output voltages from 1,21 V to 55 V, while the ISL8540 has an input voltage range of 9 V to 40 V with a programmable output voltage range of 1,21 V to 35 V. This high flexibility makes them suitable for a variety of applications such as high voltage industrial, telecom/datacom and automotive power applications. These devices also have the capability to manage transient spikes of up to 100 V for 400 ms.
The ISL8540 and ISL8560 provide features such as separate EN and Power Good for output sequencing, adjustable switching frequency and external frequency synchronisation from 100 kHz to 600 kHz. Both devices contain protection features such as over-temperature, under-voltage, pulse-by-pulse hiccup mode, over-current and short circuit protection.
The ISL8540 and ISL8560 include an integrated BOOT diode and high-side, integrated power DMOS low-resistance transistor capable of supporting up to 2 A continuous load current to improve efficiency and accelerate switching speeds. The internal reference of 1,21 V is accurate to ±1% over the industrial temperature range of -40°øC to +85°C. These features, along with input voltages to support 12 V, 24 V, 36 V and 48 V applications, make the devices flexible and easy-to-use, plug-and-play power solutions for most point-of-load applications.
The ISL8540 is available in a 20-lead HTSSOP package while the ISL8560 comes in a 20-lead QFN. Both devices meet Pb-free plus anneal standards and are RoHS compliant.
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