The TPS6280x device family is a step down converter with 2.3µA typical quiescent current
featuring highest efficiency and using smallest solution size. TIs DCS-Control™ topology enables
the device to operate with tiny inductors and capacitors up to a 4 MHz switching frequency. At
light load conditions it seamlessly enters Power Save Mode to reduce switching cycles and
maintaining high efficiency.
Conncecting the VSEL/MODE pin to GND selects a 1.2V fixed output voltage. With only one
external resistor connected to VSEL/MODE pin, 16 internally set output voltages can be selected. An
integrated R2D (resistor to digital) converter reads out the external resistor and sets the output
voltage. The same device part number can be used for different applications and voltage rails just
by changing a single resistor. Furthermore, the internally set output voltage provides better
accuracy compared to a traditional external resistor divider network. Once the device has started
up, the DC/DC converter can enter Forced PWM Mode by applying a high level at the VSEL/MODE pin. In
this operating mode, the device runs at typically 4MHz switch frequency enabling lowest output
voltage ripple. The TPS6280x device series comes in a tiny 6pin WCSP package with 0.35mm pitch.
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