TPS2505B1

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS2505 SPAS093C – DECEMBER 2009 – REVISED SEPTEMBER 2015 TPS2505 Integrated Dual USB Switches, Boost Converter and LDO 1 Features 1 Integrated Synchronous Boost Converter, LDO, and Dual USB Current-Limited Switches 1.8-V to 5.25-V Input Voltage (2.2-V Minimum Start-Up Voltage) Adjustable Independent USB Current Limit – 100 mA to 1100 mA Auxiliary 5.1-V Output 3.3-V Linear Regulator Output Inrush Current < 100 mA Minimal External Components Required Deglitched Independent Fault Reporting Small 5-mm × 5-mm QFN-20 Package Industrial Temperature Range 2 Applications Portable Applications Using Single Li+ Cell Bus Powered USB Hosts USB Hosts Without Native 5-V Supplies Computer Peripherals 3 Description 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 alkaline. 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 110...