Sporting a 2.7-V to 40-V input and output range, the Linear Technology LTC3115-1 synchronous buck-boost dc-dc converter delivers up to 2 A of continuous output current from power sources ranging from single-cell Li-ion to 24/28-V industrial rails and 40-V automotive inputs.

Sporting a 2.7-V to 40-V input and output range, the Linear Technology LTC3115-1 synchronous buck-boost dc-dc converter delivers up to 2 A of continuous output current from power sources ranging from single-cell lithium-ion (Li-ion) to 24/28-V industrial rails and 40-V automotive inputs. Switching frequency is user programmable between 100 kHz and 2 MHz and can be synchronized to an external clock. Proprietary third-generation buck-boost pulse-width modulation (PWM) circuitry ensures low noise and high efficiency. The device integrates four internal low on-resistance N-channel MOSFETs to deliver efficiencies of up to 95%. User-selectable burst-mode operation lowers quiescent current to 50 μA and, for noise-sensitive applications, burst-mode operation can be disabled. Additional features include internal soft-start, programmable undervoltage protection, short-circuit protection, and output disconnect. The LTC3115EDHD-1 is available in a 16-lead, 4- by 5-mm dual flat no-lead (DFN) package, and the LTC3115EFE-1 is available in a thermally enhanced 20-lead thin-shrink small-outline package (TSSOP). Pricing starts at $5.35 and $5.55 each/1000, respectively. For more information, visit www.linear.com/product/LTC3115-1.

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Linear Technology
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