tps2500.pdf tps2501
| FEATURES | APPLICATIONS |
| Integrated Synchronous Boost Converter and " | Portable Applications Using Single Li+ Cell " |
| 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 |
| 1.8-V to 5.25-V Input Voltage (2.2-V Minimum " | solution to meet USB 5-V power requirements from a |
| Start-Up Voltage) | 1.8-V to 5.25-V input supply. The features include a |
| 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 " | 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, |
| Auxiliary 5.1-V Output " | NiMH, or alkaline. |
| Fast Overcurrent-Response Time � 5 ms " | The USB power-switch current limit is programmable |
| Typical | via an external resistor from as low as 130 mA to as |
| Small 3-mm × 3-mm × 0.9-mm SON-10 Package " 15-kV / 8-kV System-Level ESD Capable " | 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.
ABSOLUTE MAXIMUM RATINGS (1)
over operating free-air temperature range (unless otherwise noted)
| VALUE | UNIT | ||
| Input voltage range on SW(2), AUX, IN, USB, ENUSB, EN, FAULT, ILIM | �0.3 to 7 | V | |
| FAULT sink current | 25 | mA | |
| ILIM source current | 1 | mA | |
| TJ | Junction temperature range | �40 to 150 | °C |
| ESD � HBM | 2 | kV | |
| ESD � CDM | 500 | V | |
| ESD � system level (contact/air)(3) | 8月15日 | kV |
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