Active production — sourcing a 5.4V boost regulator for space-constrained designs
The TPS612564CYFFT is a Texas Instruments step-up boost converter with a fixed 5.4V output, rated for 2.4A switch current at a 3.5MHz switching frequency. It accepts an input range from 2.3V to 5.5V, making it suitable for single-cell Li-Ion or multi-cell alkaline battery-powered systems that need a regulated 5V rail.
The 2.4A switch current rating sets the maximum inductor peak current; for a typical 5.4V output at 3.3V input, this supports load currents around 1.2A to 1.5A depending on efficiency. The 3.5MHz switching frequency allows the use of small, low-profile inductors (typically 1 µH to 2.2 µH) and ceramic capacitors, shrinking the total solution footprint. The synchronous rectifier improves efficiency at light loads, critical for battery-life-sensitive designs.
9-DSBGA package — footprint and assembly considerations
This small footprint demands careful PCB layout — the input and output capacitors should be placed as close as possible to the device bumps to minimise parasitic inductance. The package is RoHS3 compliant and compatible with standard surface-mount assembly processes.