Intersil Corp. announced the release of a new family of 2A integrated FET step down dc-dc switching regulators that support wide operating input voltages and can handle transient spikes up to 100V.
The ISL8560 supports an input voltage range of 9 to 60V with programmable output voltages from 1.21 to 55V while the ISL8540 has an input voltage range of 9 to 40V with a programmable output voltage range of 1.21 to 35V. This flexibility makes them well suited for a variety of applications such as high voltage industrial and automotive power applications. These devices also have the capability to manage transient spikes of up to 100V for 400ms, adding critical protection against spikes.
The ISL8540 and ISL8560 are claimed to provide industry-leading features including separate EN and Power Good for output sequencing, adjustable switching frequency and external frequency synchronization from 100 to 600kHz. Both devices contain protection features such as over-temperature, undervoltage, pulse-by-pulse overcurrent and hiccup-mode short circuit protections. All of these features are said to add flexibility, increase efficiency and improve system reliability against adverse fault conditions.
The ISL8540 and ISL8560 include an integrated BOOT diode and high-side, integrated power DMOS low-resistance transistor capable of supporting up to 2A continuous load current to improve efficiency and accelerate switching speeds. The internal reference of 1.21V is accurate to ±1% over industrial temperature range (-40 to +85°C). These features, along with input voltages to support 12, 24V, 36, 48 and 60V applications, is claimed to make these devices the industry’s most 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.
The ISL8540 is currently available in a 20-lead HTSSOP package starting at $2.79 per device in quantities of 1,000. The ISL8560 is available now in a 20-lead 6mm x 6mm Pb-free QFN package starting at $2.97 per device in quantities of 1,000.