TPS2501中文资料0.13-1.4A adj. ILIMIT, 1.8-5.25V, 80mΩ USB power switch + boost converter in constant frequency数据手册TI规格书

描述 Description

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 1148  mA at VIN = 3 V.

特性 Features

• Integrated Synchronous Boost Converter and USB Current-Limit Power Switch
• 1.8-V to 5.25-V Input Voltage (2.2-V Minimum Start-Up Voltage)
• 130 mA to 1400 mA (Typical)
• Accurate 20% Current Limit at 1.4-A Setting
• Auxiliary 5.1-V Output
• Small 3-mm × 3-mm × 0.9-mm SON-10 Package
• UL Listed - File No. E169910
• Portable Applications Using Single Li+ Cell
• USB Hosts Without Native 5-V Supplies

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