The TPS61256xC device provides a power supply solution for battery-powered portable
applications. Intended for low-power applications, the TPS61256xC supports up to 800-mA load
current from a battery discharged as low as 2.65 V and allows the use of low cost chip inductor and
With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications
powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions
are available from 3.15 V to 5.0 V.
The TPS61256xC operates at a regulated 3.5-MHz switching frequency and enters power-save
mode operation at light load currents to maintain high efficiency over the entire load current
range. The PFM mode extends the battery life by reducing the quiescent current to 37 µA (typ)
during light load operation.
In addition, the TPS61256xC device can also support the pass-through mode by pulling EN
to low. In this mode, the output voltage follows the input voltage with a voltage drop by the
resistance of the inductor and high-side FET.
The TPS61256xC offers a very small solution size due to minimum amount of external
components. It allows the use of small inductors and input capacitors to achieve a small solution
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