The LTC3127 is a wide VIN range, highly efficient, 1.35MHz fixed frequency buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The LTC3127 features programmable average input current limit, making it ideal for power-limited input sources. The input current limit is programmed with a single resistor and is accurate from 0.2A to 1A of average input current. The topology incorporated provides a continuous transfer function through all operating modes. Other features include <1μA shutdown current, pin-selectable Burst Mode operation and thermal overload protection. The LTC3127 is housed in thermally enhanced 10-lead (3mm × 3mm × 0.75mm) DFN packages and 12-lead MSOP packages. Applications * USB Powered GSM Modems * Supercap Charger * Handheld Test Instruments * PC Card Modems * Wireless Terminals * Programmable (0.2A to 1A) ±4% Accurate Average Input Current Limit * Regulated Output with Input Voltages Above, Below or Equal to the Output * 1.8V to 5.5V (Input) and 1.8V to 5.25V (Output) Voltage Range * 0.6A Continuous Output Current: VIN > 1.8V * 1A Continuous Output Current: VIN > 3V * Single Inductor * Synchronous Rectification: Up to 96% Efficiency * Burst Mode® Operation: IQ = 35μA (Pin Selectable) * Output Disconnect in Shutdown * <1μA Shutdown Current * Small, Thermally Enhanced 10-Lead (3mm × 3mm × 0.75mm) DFN and 12-Lead MSOP Packages https://elecena.pl/product/1021292/1a-buck-boost-dc-dc-converter-with-programmable-input-current-limit 2010-02-10 https://elecena.pl/product/1021292/1a-buck-boost-dc-dc-converter-with-programmable-input-current-limit 2014-06-11 https://elecena.pl/product/1021292/1a-buck-boost-dc-dc-converter-with-programmable-input-current-limit 2025-01-18