Buck regulator for low-power rail generation
The TPS62746YFPT is a DCS-Control™ step-down (buck) converter delivering 300 mA from a 2.15 V to 5.5 V input rail.
Output voltage selection and thermal envelope
Output is programmable to 1.2 V or 1.8 V via a logic pin — no external divider resistors. The part integrates a synchronous rectifier, so the efficiency curve holds up across light loads without an external Schottky.
8-pin DSBGA (0.5 mm pitch) — the exposed die-attach pad is the thermal path. A 2-layer board with a small ground-plane island under the package is adequate at 300 mA; keep the input and output caps within 2 mm of the respective balls to keep the switch-node loop tight.
