The onboard switching regulator is a highly efficient synchronous boost converter, with greater than 94 percent efficiency for 3.3V inputs at typical USB current ranges. The TPS2500 features a pulse-skipping mode for high efficiency at light loads, while the TPS2501 employs fixed-frequency operation across the load range for EMI sensitive designs. Both devices are designed for battery powered portable devices, set top boxes, printers or any USB application without native 5V supply.
Key features and benefits of the TPS2500
* Integrated boost converter and switch saves space and optimizes designs
* Wide Vin range of 1.8 – 5.25V is optimized for single-cell Li-ion battery applications
* The auxiliary 5.1V output eliminates the need for additional 5V DC/DC supply
* Current limiting range from 0.13 – 1.4 A is the optimal current range for USB-powered applications