6.5A switch in a 2.5x2.5 mm boost converter
The TPS61236PRWLT is a step-up (boost) DC-DC converter from Texas Instruments that integrates a 6.5A switch in a 9-VFQFN package measuring just 2.5x2.5 mm. That switch current is the headline number — it determines how much output current you can pull from a given input voltage. At 3.3V input, a 6.5A switch can deliver roughly 1.8A at 5V before hitting the current limit, making this part suitable for USB power banks, portable speakers, and multi-cell Li-ion boost stages.
Input range and battery chemistry fit
The input voltage spans 2.3V to 4.5V. At the low end, 2.3V covers a deeply discharged single Li-ion cell or two alkaline cells in series. The 4.5V maximum input means this is a pure boost topology — it steps up, not down, so the output voltage must always be above the input. With an adjustable output from 2.9V up to 5.5V, the part can generate a regulated 3.3V rail or a 5V rail from a single Li-ion (3.0V to 4.2V range).
The synchronous rectifier improves efficiency at heavy loads.
Lifecycle and sourcing posture
The base product number is TPS61236, and this suffix (PRWLT) denotes the 9-VFQFN package with Tape & Reel delivery.