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Analog Devices’ 2MHz boost/SEPIC/inverter features 4A, 60V power switch and 9µA IQ

Analog Devices, has launched the Power by Linear LT8364, a current mode, 2MHz step-up DC/DC converter with an internal 4A, 60V switch.

The device operates from an input voltage range of 2.8V to 60V, and is intended for applications with input sources ranging from a single-cell Li-Ion battery to multicell battery stacks, automotive inputs, telecom power supplies and industrial power rails.

The LT8364 can be configured as either a boost, SEPIC or an inverting converter and its switching frequency can be programmed between 300kHz and 2MHz, enabling designers to reduce external component sizes and avoid critical frequency bands, such as AM radio.

It also offers over 90% efficiency while switching at 2MHz. Burst Mode operation reduces quiescent current to only 9μA while keeping output ripple below 15mVp-p. The combination of a small 4mm x 3mm DFN or high voltage MSOP-16E package and tiny externals means that it has a highly compact footprint, while at the same time minimising cost.

The LT8364’s 100mΩ power switch delivers efficiencies of over 95%. It also offers spread spectrum frequency modulation to minimise EMI concerns. A single feedback pin sets the output voltage whether the output is positive or negative, minimising pin count.

Other features include external synchronisation, programmable UVLO, frequency foldback and programmable soft-start.

The LT8364EDE is available in a 4mm x 3mm DFN-12 package and the LT8364EMSE is available in a high voltage MSOP-16E (4 pins removed for high voltage spacing). Industrial temperature (̶ 40°C to 125°C) versions (LT8364IDE and LT8364IMSE), and high temperature (̶ 40°C to 150°C) versions (LT8364HDE and LT8364HMSE) are also available.

Author
Neil Tyler

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