Wednesday, December 5, 2012

tps2500.pdf download Texas Instruments TI pdf datasheet

tps2500.pdf tps2501
 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.
over operating free-air temperature range (unless otherwise noted)
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 

DatasheetDoc-Texas Instruments TI pdf datasheet download


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