LTC3130 Datasheet

• Regulates V_OUT Above, Below or Equal to V_IN
• Wide V_IN Range: 2.4V to 25V, <1V to 25V (Using EXTV_CC Input)
• V_OUT Range: 1V to 25V
• Adjustable Output Voltage (LTC3130)
• 1.2µA No-Load Input Current in Burst Mode^® Operation (V_IN = 12V, V_OUT = 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 n Power Good Indicator
• Programmable Maximum Power Point Control
• I_Q = 500nA in Shutdown
• Thermally-Enhanced 20-Lead 3mm × 4mm QFN and 16-Lead MSOP Packages

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

The LTC3130 are high efficiency, low noise, 600mA buck-boost converters with wide V_IN and V_OUT ranges. For high efficiency operation at light loads, BurstMode operation can be selected, reducing the quiescent current to just 1.6µA. Converter start-up is achieved from sources as low as 7.5µW.

TheLTC3130 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.

Additional features include a power good output, an external V_CC input and thermal shutdown.

The LTC3130 are available in thermally-enhanced 20-lead 3mm × 4mm QFN and 16-lead MSOP packages.