Boost regulator with 2.4A switch for battery-powered rails
The TPS612562CYFFT is a step-up (boost) regulator from Texas Instruments, delivering a fixed 5.2V output from an input range of 2.3V to 5.5V. The integrated switch is rated for 2.4A, which sets the ceiling for the output load current — at 5.2V out, the available load current depends on input voltage and efficiency, but the switch rating gives a hard limit for inductor and diode selection. Switching at 3.5MHz lets the designer use a smaller inductor — typically 1 µH to 2.2 µH — which saves board area in space-constrained designs like portable instruments, battery-powered sensors, or single-cell Li-ion to 5V rail converters. The synchronous rectifier improves efficiency at moderate to heavy loads compared to a diode-based boost, reducing heat dissipation in the 9-DSBGA package.
Input range and output tolerance for rail budgeting
Maximum input of 5.5V covers regulated 5V rails but does not tolerate 12V or higher — confirm the upstream supply never exceeds 5.5V. Output is fixed at 5.2V, not adjustable. For higher ambient, consider the automotive-grade LM53625LQURNLRQ1 which is a buck, not a boost — different topology entirely.
This means multi-year production plans are safe without an obsolescence watch. The part is ROHS3 compliant.