LTC3129-1 Series

15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3μA Quiescent Current

Catalog

15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3μA Quiescent Current

Part	Topology	Output Type	Current - Output	Output Configuration	Voltage - Output (Min/Fixed)	Supplier Device Package	Mounting Type	Frequency - Switching	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Function	Package / Case	Package / Case	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Max) [Max]
Analog Devices LTC3129EMSE-1#TRPBF	Buck-Boost	Programmable	200 mA	Positive	2.5 V	16-MSOP-EP	Surface Mount	1.2 MHz	15 V	1.92 V	Step-Up/Step-Down	16-TFSOP Exposed Pad	0.118 in 3 mm	1	-40 °C	125 ¯C
Analog Devices LTC3129EUD#PBF	Buck-Boost	Adjustable	200 mA	Positive	1.4 V	16-QFN (3x3)	Surface Mount	1.2 MHz	15 V	1.92 V	Step-Up/Step-Down	16-WFQFN Exposed Pad		1	-40 °C	125 ¯C	15.75 V
Analog Devices LTC3129IMSE#TRPBF	Buck-Boost	Adjustable	200 mA	Positive	1.4 V	16-MSOP-EP	Surface Mount	1.2 MHz	15 V	1.92 V	Step-Up/Step-Down	16-TFSOP Exposed Pad	0.118 in 3 mm	1	-40 °C	125 ¯C	15.75 V
Analog Devices LTC3129IUD#PBF	Buck-Boost	Adjustable	200 mA	Positive	1.4 V	16-QFN (3x3)	Surface Mount	1.2 MHz	15 V	1.92 V	Step-Up/Step-Down	16-WFQFN Exposed Pad		1	-40 °C	125 ¯C	15.75 V
Analog Devices LTC3129IUD#TRPBF	Buck-Boost	Adjustable	200 mA	Positive	1.4 V	16-QFN (3x3)	Surface Mount	1.2 MHz	15 V	1.92 V	Step-Up/Step-Down	16-WFQFN Exposed Pad		1	-40 °C	125 ¯C	15.75 V
Analog Devices LTC3129IUD-1#PBF	Buck-Boost	Programmable	200 mA	Positive	2.5 V	16-QFN (3x3)	Surface Mount	1.2 MHz	15 V	1.92 V	Step-Up/Step-Down	16-WFQFN Exposed Pad		1	-40 °C	125 ¯C

Catalog

15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3μA Quiescent Current

Key Features

• Regulates VOUTAbove, Below or Equal to VIN

• Wide VINRange: 2.42V to 15V, 1.92V to 15V After Start-Up (Bootstrapped)

• Fixed Output Voltage with Eight User-Selectable Settings from 2.5V to 15V

• 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

Description

The LTC3129-1 is a high efficiency, 200mA buck-boost DC/DC converter with a wide VINand VOUTrange. 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 LTC3129-1 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. To further reduce part count and improve light load efficiency, the LTC3129-1 includes an internal voltage divider to provide eight selectable fixed output voltages.Additional features include a power good output, less than 10nA of shutdown current and thermal shutdown.The LTC3129-1 is available in thermally enhanced 3mm × 3mm QFN and 16-lead MSOP packages. For an adjustable output voltage, see the functionally equivalent LTC3129.Output VoltageLTC3129Adjustable 1.4V to 15.75V via resistor dividerLTC3129-18 pin programmable output voltages from 2.5V to 15VApplicationsIndustrial Wireless Sensor NodesPost-Regulator for Harvested EnergySolar Panel Post-Regulator/ChargerIntrinsically Safe Power SuppliesWireless MicrophonesAvionics-Grade Wireless Headsets