Analog Devices, Inc., which recently acquired Linear Technology Corp., has announced the LT8362, a current mode, 2 MHz step-up DC/DC converter with an internal 2 A, 60 V switch. It operates from an input voltage range of 2.8 V to 60 V, 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 300 kHz and 2 MHz, enabling designers to minimize external component sizes and avoid critical frequency bands, such as AM radio. Furthermore, it offers more than 90 percent efficiency while switching at 2 MHz. Burst Mode operation reduces quiescent current to 9 μA while keeping output ripple below 15 mV P-P. The combination of a 3 mm by 3 mm DFN or high voltage MSOP-16E package and tiny externals ensures a highly compact footprint while minimizing solution cost.
The LT8362’s 165 mΩ switch delivers efficiencies of more than 95 percent. 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 fold back and programmable soft-start.
The LT8362EDD is available in a 3 mm by 3 mm DFN-10 package and the LT8362EMSE is available in a high voltage MSOP-16E (4 pins removed for high voltage). Pricing starts at $2.95 each for 1,000- piece quantities. Industrial temperature (-40°C to 125°C) versions, the LT8362IDD and the LT8362IMSE, are also available. High temperature (-40°C to 150°C) versions, the LT8362HDD and the LT8362HMSE, are also available.