The TPS6220x devices are a family of high-efficiency synchronous step-down converters
ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The
devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.
With an output voltage range of 6 V down to 0.7 V and up to 300 mA output current, the
devices are ideal to power low voltage DSPs and processors used in PDAs, pocket PCs, and smart
phones. Under nominal load current, the devices operate with a fixed switching frequency of
typically 1 MHz. At light load currents, the part enters the power save mode operation; the
switching frequency is reduced and the quiescent current is typically only 15 µA; therefore, it
achieves the highest efficiency over the entire load current range. The TPS6220x needs only three
small external components. Together with the SOT23 package, a minimum system solution size is
achieved. An advanced fast response voltage mode control scheme achieves superior line and load
regulation with small ceramic input and output capacitors.
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