The TPS6125xA device provides a power supply solution for battery-powered portable
applications. With the input voltage ranging from 2.3 V to 5.5 V, the device supports the
applications powered by the Li-Ion batteries with the extended voltage range. Different fixed
output voltage versions are available of 4.5 V, 4.7 V, 5 V and 5.2 V. The TPS6125xA supports up to
1500-mA load current from a battery discharged as low as 3 V.
The TPS6125xA operates at typical 3.8-MHz switching frequency. The TPS6125xA could be
flexibly configured at the Auto PFM mode, forced PWM mode or ultrasonic mode. The Auto PFM mode
could benefit with the high efficiency at the light load. The forced PWM operation can make the
switching frequency be constant crossing the whole load range. The ultrasonic mode keeps the
switching frequency always larger than 25 kHz at any load condition to avoid the acoustic
TPS6125xA has a built-in 600-µs soft start to avoid the inrush current at startup. When
the output is shorted, the device enters into the hiccup mode and recovers automatically after the
short releases. During the shutdown, the load is completely disconnected from the input end with
maximum 1.3-uA current being consumed.
The TPS6125xA comes in a 9-ball 1.2-mm x 1.3-mm WCSP package and offers a very small
solution size with the minimum amount of external components.
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