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TPS2500 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2500 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 42 page 1 FEATURES APPLICATIONS DESCRIPTION S0380-02 2.2 H m 1.8-V to 5.25-V Input 10 F m IN EN ILIM GND R ILIM PGND POWER PAD USB FAULT ENUSB AUX SW R FAULT 120 F m (1) 5 V USB Power 22 F m Data Data 5 V Auxiliary Load Power, 100 mA (2) USB FAULT Flag 5 V USB Port #1 500 mA 5 V USB Port #2 500 mA TYPICAL APPLICATION CIRCUIT IO(AUX) − Output Auxiliary Current − mA 0.77 0.79 0.81 0.83 0.85 0.87 0.89 0.91 0.93 0.95 0.97 0 300 600 900 1200 1500 G001 VIN = 1.8 V VIN = 4.5 V VIN = 3.3 V TPS2500, TPS2501 www.ti.com................................................................................................................................................ SLVS886A – OCTOBER 2008 – REVISED AUGUST 2009 INTEGRATED USB POWER SWITCH WITH BOOST CONVERTER • Portable Applications Using Single Li+ Cell 23 • Integrated Synchronous Boost Converter and USB Current-Limit Power Switch • USB Hosts Without Native 5-V Supplies • Light-Load, High-Efficiency Eco-mode™ Control Scheme (TPS2500) or Constant Frequency (TPS2501) 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 Voltage (2.2-V Minimum 1.8-V to 5.25-V input supply. The features include a Start-Up Voltage) Hi-Speed USB compliant power output, output switch • Adjustable USB Current Limit enable, current limit, and overcurrent fault reporting. – 130 mA to 1400 mA (Typical) The 1.8-V to 5.25-V input can be supplied by sources • Accurate 20% Current Limit at 1.4-A Setting including dc/dc regulated supplies (e.g., 3.3 V), or • Powers up to Two Standard USB Ports batteries such as single-cell Li+ or three-cell NiCd, NiMH, or alkaline. • Auxiliary 5.1-V Output • Minimal External Components Required The USB power-switch current limit is programmable via an external resistor from as low as 130 mA to as • Fast Overcurrent-Response Time – 5 µs high as 1400 mA (typical). Two standard USB ports Typical can be supported from a single TPS2500 or TPS2501 • Small 3-mm × 3-mm × 0.9-mm SON-10 Package at the 1400-mA setting. • 15-kV / 8-kV System-Level ESD Capable 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. BOOST EFFICIENCY vs OUTPUT AUXILIARY CURRENT (1) Requirement for USB applications only; downstream facing ports should be bypassed with 120 µF minimum per hub. (2) Additional current can be supplied from AUX if <1 A is required for USB ports; total current should not exceed 1.1 A at VIN = 3 V. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Eco-mode, PowerPAD are trademarks of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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