The LTC3129IUD#PBF is a high efficiency, 200mA buck-boost DC/DC converter with a wide VIN and VOUT range. It includes an accurate RUN pin threshold to allow predictable regulator turn-on and a maximum power point control (MPPC) capability that ensures maximum power extraction from non-ideal power sources such as photovoltaic panels.
The LTC3129IUD#PBF employs an ultralow noise, 1.2MHz PWM switching architecture that minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. Built-in loop compensation and soft-start simplify the design. For high efficiency operation at light loads, automatic Burst Mode operation can be selected, reducing the quiescent current to just 1.3μA.
Additional features include a power good output, less than 10nA of shutdown current and thermal shutdown.
The LTC3129IUD#PBF is available in thermally enhanced 3mm × 3mm QFN and 16-lead MSOP packages. For fixed output voltage options, see the functionally equivalent LTC3129-1, which eliminates the need for an external feedback divider.
Output VoltageLTC3129Adjustable 1.4V to 15.75V via resistor dividerLTC3129-18 pin programmable output voltages from 2.5V to 15VFeature
- Regulates VOUT Above, Below or Equal to VIN
- Wide VIN Range: 2.42V to 15V, 1.92V to 15V After Start-Up (Bootstrapped)
- Wide VOUT Range: 1.4V to 15.75V
- 200mA Output Current in Buck Mode
- Single Inductor
- 1.3μA Quiescent Current
- Programmable Maximum Power Point Control
- 1.2MHz Ultralow Noise PWM
- Current Mode Control
- Pin Selectable Burst Mode® Operation
- Up to 95% Efficiency
- Accurate RUN Pin Threshold
- Power Good Indicator
- 10nA Shutdown Current
- Thermally Enhanced 3mm × 3mm QFN and 16-Lead MSOP Packages
Applications
- Industrial Wireless Sensor Nodes
- Post-Regulator for Harvested Energy
- Solar Panel Post-Regulator/Charger
- Intrinsically Safe Power Supplies
- Wireless Microphones
- Avionics-Grade Wireless Headsets
(Picture: Pinout)
