LTC3130IUDC#PBF

The LTC3130/LTC3130-1 are high efficiency, low noise, 600mA buck-boost converters with wide V₁ₙ and Vₒᵤₜ ranges. For high efficiency operation at light loads, Burst Mode operation can be selected, reducing the quiescent current to just 1.6µA. Converter start-up is achieved from sources as low as 7.5µW. The LTC3130/LTC3130-1 employ an ultralow noise, 1.2MHz PWM architecture that minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. Built-in loop compensation and soft-start reduces external parts count and simplifies the design. Features include an accurate RUN comparator threshold to allow predictable regulator turn-on and a maximum power point control (MPPC) capability that ensures maximum power extraction from non-ideal sources such as photovoltaic panels. The LTC3130-1 includes an internal voltage divider to provide four selectable fixed output voltages. Additional features include a power good output, an external VCC input and thermal shutdown. The LTC3130 and LTC3130-1 are available in thermally enhanced 20-lead 3mm × 4mm QFN and 16-lead MSOP packages.

Applications

• Long - Life, Battery - Operated Instruments
• Low Power Sensors
• Solar Panel Post - Regulator/Charger

Key features

• Regulates Vₒᵤₜ Above, Below or Equal to V₁ₙ
• Wide V₁ₙ Range: 2.4V to 25V
• <1V to 25V (Using EXTVCC Input)
• Vₒᵤₜ Range: 1V to 25V
• Adjustable Output Voltage (LTC3130)
• Four Selectable Fixed Output Voltages (LTC3130 - 1)
• 1.2µA No - Load Input Current in Burst Mode Operation (V₁ₙ = 12V, Vₒᵤₜ = 5V)
• 600mA Output Current in Buck Mode
• Pin - Selectable 850mA/450mA Current Limit (LTC3130)
• Up to 95% Efficiency
• Pin - Selectable Burst Mode Operation
• 1.2MHz Ultralow Noise PWM Frequency
• Accurate RUN Pin Threshold
• Power Good Indicator
• Programmable Maximum Power Point Control
• Iq = 500nA in Shutdown
• Thermally - Enhanced 20 - Lead 3mm × 4mm QFN and 16 - Lead MSOP Packages