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.
Eco-mode, PowerPAD are trademarks of Texas Instruments.
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|Vin (Min) (V)|
|Vin (Max) (V)|
|Number of Switches|
|Iout @ Vin=3V (max) (A)|
|Current Limit (A)|
|Current Limit Accuracy @ 1.4A (%)|
|Current Limit Topology|
|Boost Switch Current Limit (typ) (A)|
|Continuous Current (Max) (A)|
|Eco-Mode Light-Load Efficiency|
|Switching Frequency (Typ) (kHz)|
|USB Switch rDS(on) (mOhms)|
|Operating Temperature Range (C)|