The device targets end equipment such as network switches/routers, servers, storage, base stations, FPGA and DSP power as well as factory automation and security cameras. The synchronous buck converter operates over a wide input voltage range of 4.5 to 19V, making it suitable for distributed 12V PoL applications. The solution offers three settings for switching frequency: 400, 565 or 790kHz, and the output voltage can be selected from 0.7 to 3.3V via nine different settings. An internal divider is used for true 1% VOUT accuracy setting from 0.7 to 1.2V. The current limit can be selected to support three application requirements: 3, 4 or 5A. The MIC24046-H provides hiccup-mode short circuit protection. Other features include internal soft-start, safe pre-biased start-up and thermal shutdown.
“New generation telecomms and datacomms systems are pushing the limits of power density requirements such that applications now require a flexible and high performance DC/DC solution in a smaller footprint,” commented Brian Hedayati, Vice President of Marketing for high performance and linear power solutions, Micrel. “Micrel’s MIC26046-H provides high efficiency and design flexibility. The output voltage, current limit and switching frequencies are pin-selectable and do not require external components thereby dramatically simplifying the design and allowing the same device to be used for multiple power supply rails.”
The device, which has a junction temperature range of -40 to +125°C, is available in volume with pricing starting at $1.33 for 1,000 quantities. This is the first of a series in a product family.