Extend battery life with this high-efficiency step-down converter

28-08-2019 | Texas Instruments | Power

The Texas Instruments TPS62840 is a high-efficiency step-down converter with ultra-low operating quiescent current of typically 60nA. The device comprises special circuitry to achieve just 150nA IQ in 100% mode to further extend battery life towards the end of discharge.


The device employs DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8MHz. In Power-Save Mode the device increases the light load efficiency down to a load current range of 1µA and below.


Sixteen predefined output voltages can be chosen by connecting a resistor to pin VSET, making the device adaptable for many applications with a least amount of external components.


The device’s STOP pin instantly removes any switching noise to take a noise-free measurement in test and measurement systems.


The TPS6284x offers an output current of up to 750mA. With an input voltage of 1.8V to 6.5V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2 or 1S Li-Ion/Li-SoCl2.


From IoT to smart meters, and patient monitors to wearables, this device will save the battery life of a device.

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