The TPS2505 device provides an integrated solution to meet USB 5-V power requirements
from a 1.8-V to 5.25-V input supply. The features include a 5.1-V, 1100-mA boost converter, a
200-mA, 3.3-V LDO linear regulator and dual USB 2.0 compliant power outputs with independent output
switch enable, current limit, and overcurrent fault reporting.
The 1.8-V to 5.25-V input can be supplied by sources including DC-DC regulated supplies
(for example, 3.3 V), or batteries such as single cell Li+, two-cell or three-cell NiCd, NiMH or
The output trip current for the dual USB switches can be programmed through external
resistors from as low as 100 mA to as high as 1100 mA.
An auxiliary 5.1-V output is provided, where the total current supplied by the USB
outputs and the auxiliary by cannot exceed 1100 mA.