LTC3115-1 Datasheet | Linear Technology

Features nn Wide VIN Range: 2.7V to 40V nn Wide VOUT Range: 2.7V to 40V nn 1A Output Current for VIN ≥ 3.6V, VOUT = 5V nn 2A Output Current in Step-Down Operation for VIN ≥ 6V nn Programmable Frequency: 100k Hz to 2MHz nn Synchronizable Up to 2MHz with an External Clock nn Up to 95% Efficiency nn 30µA No-Load Quiescent Current in Burst Mode® Operation nn Ultralow Noise Buck-Boost PWM nn Internal Soft-Start nn 3µA Supply Current in Shutdown nn Programmable Input Undervoltage Lockout nn Small 4mm × 5mm × 0.75mm DFN Package nn Thermally Enhanced 20-Lead TSSOP Package nn AEC-Q100 Qualified for Automotive Applications APPLICATIONS nn 24V/28V Industrial Applications nn Automotive Power Systems nn Tele, Servers and Networking Equipment nn Fire Wire Regulator nn Multiple Power Source Supplies 40V, 2A Synchronous Buck-Boost DC/DC Converter DESCRIPTION The LTC®3115-1 is a high voltage monolithic synchronous buck-boost DC/DC converter. Its wide 2.7V to 40V input and output voltage ranges make it well suited to a wide variety of automotive and industrial applications. A proprietary low noise switching algorithm optimizes efficiency with input voltages that are above, below or even equal to the output voltage and ensures seamless transitions between operational modes. Programmable frequency PWM mode operation provides low noise, high efficiency operation and the ability to synchronize switching to an external clock. Switching frequencies up to 2MHz are supported to allow use of small value inductors for miniaturization of the application circuit. Pin selectable Burst Mode operation reduces standby current and improves light load efficiency which, bined with a 3µA shutdown current, make the LTC3115-1 ideally suited for battery-powered applications. Additional Features include output disconnect in shutdown, short-circuit protection and internal soft-start. The LTC3115-1 is available in thermally enhanced 16-lead 4mm × 5mm × 0.75mm DFN and 20‑lead TSSOP...