Fixed 1.8V rail from 3V to 17V input
The TPS62131RGTT is a synchronous step-down (buck) regulator from the DCS-Control™ family, delivering a fixed 1.8V output at up to 3A continuous current. Input range spans 3V to 17V, covering common 5V, 12V, and 15V buses without external level shifting.
For a new design-in or a BOM fill, this is a current, supported part with no imminent supply disruption.
Thermal and layout notes for the 3x3 QFN
The datasheet recommends a 4-layer PCB with at least 4 vias in the thermal land.
Single-output, positive-configuration regulator
This is a single-output, positive-configuration regulator. The fixed 1.8V output means no external resistor divider is needed for the feedback — just the output capacitor and inductor. The DCS-Control™ architecture provides fast transient response and a seamless transition between PWM and power-save modes at light loads, which matters for battery-powered or low-standby designs.
