DC/DC Converter
Linear Technology, which was recently bought by Analog Devices Inc, has launched the LT8362, a current mode, 2MHz step-up DC/DC converter with an internal 2A, 60V switch. It operates from an input voltage range of 2.8V to 60V, suitable for applications with input sources ranging from a single-cell Li-Ion battery to automotive and industrial inputs.
The LT8362 can be configured as either a boost, SEPIC or an inverting converter. Its switching frequency can be programmed between 300kHz and 2MHz, enabling designers to minimize external component sizes and avoid critical frequency bands, such as AM radio. Furthermore, it 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 3mm x 3mm DFN or high voltage MSOP-16E package and tiny externals ensures a highly compact footprint while minimizing solution cost.
The LT8362’s 165mΩ switch delivers efficiencies of over 95%. It also offers spread spectrum frequency modulation to minimize EMI concerns. 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, internal soft-start, frequency foldback and programmable soft-start.
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