Boost regulator for 5V rails from 2.5V to 4.85V input
The TPS61256YFFT is a fixed 5V output boost converter from Texas Instruments, designed to step up input voltages from 2.5V up to 4.85V. The internal switch is rated for 2.4A continuous, which sets the practical output current ceiling — at 5V out, expect roughly 1A to 1.2A depending on input voltage and efficiency. The 3.5 MHz switching frequency allows the use of small inductors and ceramic capacitors, shrinking the total solution footprint.
Synchronous rectification and industrial temperature range
The device integrates a synchronous rectifier, improving efficiency compared to a diode-based boost. The 9-DSBGA package requires careful PCB layout for fine-pitch solder joints and thermal management.
The base product number TPS61256 covers multiple output voltage variants and package options, so the YFFT suffix identifies the 9-DSBGA package and tape-and-reel delivery. ROHS3 compliant.