Texas Instruments (TI) is the newest power switching regulator with the lowest quiescent current.
Texas Instruments (TI) today introduced the TPS62840, an ultra-low power switching regulator with an operating quiescent current (IQ) of 60 nA, which is only one-third that of similar devices in the industry. It delivers 80% extreme light-load efficiency at 1-μA load, allowing designers to extend the battery life of their systems or use fewer or smaller batteries to reduce their overall power solution size and cut costs. In addition, the new DC/DC converters offer a wide input voltage (VIN) range of 1.8 V to 6.5 V and are capable of supporting a wide range of chemical batteries and configurations.
Thanks to these features and their optional features, the TPS62840 helps engineers overcome key design challenges in battery-powered and continuously operating industrial and personal electronics applications, including narrowband IoT, grid infrastructure equipment and wearable devices all require greater flexibility and precision, widen the wireless range, and reduce electromagnetic interference (EMI).
The 60-nA IQ step-down converter enhances battery efficiency in a variety of industrial and personal electronics applications and reduces the size of the overall power solution.
The TPS62840 incorporates TI's highly integrated portfolio of low IQ DC/DC converters, enabling designers to maximize power output with the smallest possible solution size.
Key features and benefits of the TPS62840
Smaller solution size: Engineers can use a new switching regulator to cut their battery count by half or use a smaller battery in their design. For example, the designer used four AAA batteries instead of four AA batteries to save space of 16,980 mm3.
Optional modes improve performance and reduce overall cost: The optional mode and stop feature of the TPS62840 improves noise performance and reduces signal distortion. These advantages can help reduce solution costs because designers can achieve system requirements without having to perform the same functions with more expensive precision signal chain components, sensors, or radio solutions.
The stop pin turns off all switches to reduce EMI or ripple and minimizes distortion that is passed to precision signal chains, measurements, sensors, or wireless connectivity components.
The mode pin allows continuous conduction mode (also known as forced pulse width modulation mode) to improve ripple or noise performance and reduce the effects of transmission in sensitive RF applications.
Longer battery life and extremely low light load efficiency: Lower IQ consumption provides longer battery life for systems with extremely light loads (less than 100μA) and primarily in standby/factory mode (no switching) . The low IQ of the TPS62840 achieves 80% efficiency at 1-μA load, which is 30% higher than comparable devices in the industry.
Flexible VIN widens the range of applications: The TPS62840 has a wide input voltage range of 1.8 VIN-6.5 VIN and accepts a wide range of chemical batteries and configurations, such as two-cell lithium-manganese dioxide (2s-LiMnO2) batteries in series. Single-cell lithium thionyl chloride (1xLiSOCL2) battery, four- and two-cell alkaline batteries, and lithium polymer battery (Li-Po).
Package and availability
TPS62840 pre-samples in the following packages are available at TI stores: 8-pin small outline leadless package (SON), 1.5 mm × 2.0 mm, 6-lead wafer-level chip scale package (WCSP), size 0.97 Mm × 1.47 mm. The 3 mm x 5 mm 8-pin Thermal Enhanced Package (HVSSOP) will be available later this year.
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