0.3V startup — what it means for battery-powered designs
The TPS61200DRCR is a boost converter that starts up from an input as low as 0.3V and regulates down to that same floor, making it a fit for single-cell alkaline, NiMH, or lithium chemistries where the cell voltage sags below 1V under load. With a 1.2A switch current limit and synchronous rectification, it delivers useful output current from a depleted cell without the forward-drop penalty of an external Schottky diode.
Adjustable output and switching frequency
Output is adjustable from a 1.8V minimum up to 5.5V maximum, matching the input ceiling — the feedback divider sets the regulation point, so the same part works for 3.3V rails or 5V USB outputs. The switching frequency runs between 1.25 MHz and 1.65 MHz, which keeps the inductor in the 2.2 µH to 4.7 µH range — small enough for the 10-VSON (3x3 mm) footprint.