100V, 2A DC-DC converter offers low quiescent current
The ‘Power by Linear’ LT8361 operates from an input voltage range of 2.8V to 60V, and is suitable 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 device can be configured as either a boost, SEPIC or an inverting converter and has a switching frequency that can be programmed between 300kHz and 2MHz, enabling designers to minimize external component sizes and avoid critical frequency bands, such as AM radio. It also has over 90% efficiency while switching at 2MHz while the 375mΩ power switch delivers efficiencies up to 95%. Burst Mode operation reduces quiescent current to only 9μA while keeping output ripple below 15mVp-p. The combination of a small MSOP-16E package and small external components from the high switching frequency ensures a highly compact footprint while minimizing solution cost.
The LT8361 offers spread spectrum frequency modulation to minimize EMI concerns and a single feedback pin sets the output voltage whether the output is positive or negative, minimizing pin count. Other features include external synchronization, programmable UVLO, frequency foldback and programmable soft-start.
The LT8361EMSE is available in an MSOP-16E package (4 pins removed for high voltage spacing). An industrial temperature (–40°C to 125°C) version, the LT8361IMSE and a high temperature (–40°C to 150°C) version, the LT8361HMSE, are also available. All versions are available from stock with prices starting at $3.36.
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