TI TPS2501DRCR

The TPS2500 and TPS2501 provide 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 Hi-Speed USB compliant power output, 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 (e.g., 3.3 V), or batteries such as single-cell Li+ or three-cell NiCd, NiMH, or alkaline. The USB power-switch current limit is programmable via an external resistor from as low as 130 mA to as high as 1400 mA (typical). Two standard USB ports can be supported from a single TPS2500 or TPS2501 at the 1400-mA setting. Additionally, the boost converter output is available as an auxiliary 5.1 V output to power additional loads. The total current supplied by the USB output and the auxiliary cannot exceed 1 148 mA at VIN = 3 V.

• Integrated Synchronous Boost Converter and USB Current-Limit Power Switch
• Light-Load, High-Efficiency Eco-mode™ Control Scheme (TPS2500) or Constant Frequency (TPS2501)
• 1.8-V to 5.25-V Input Voltage (2.2-V Minimum Start-Up Voltage)
• Adjustable USB Current Limit – 130 mA to 1400 mA (Typical)
• Accurate ±20% Current Limit at 1.4-A Setting
• Powers up to Two Standard USB Ports
• Auxiliary 5.1-V Output
• Fast Overcurrent-Response Time – 5 μs Typical
• Small 3 mm × 3 mm × 0.9 mm SON-10 Package
• 15-kV / 8-kV System-Level ESD Capable
• UL Listed • File No. E169910

• Portable Applications Using Single Li+ Cell
• USB Hosts Without Native 5-V Supplies