TI Announces TPS6222x Family of Converters

Texas Instruments Inc. (TI, Dallas, TX) announced a family of 400mA, synchronous dc/dc step-down converters with ultra-low quiescent current and up to 95% power efficiency. The new high-performance power management converters are suited for portable systems powered by single-cell, lithium-ion or three-cell alkaline or nickel metal-hydride batteries.

The TPS6222x family of step-down converters supports an input-voltage range from 2.5V to 6V, an output-voltage range of 6V down to 0.7V, and output current up to 400mA, which can support personal digital assistants, smartphones and wireless LAN applications. The converters operate with a fixed switching frequency of 1.25MHz (typical). To provide additional power savings, the TPS6222x enters a "power-save mode" operation at light-load currents. In this mode the switching frequency is reduced and quiescent current is typically only 15µA.

The TPS6222x step-down dc/dc converters are now available. Pricing for the devices, which come in a five-pin ThinSOT-23 package, are $1.49 each in quantities of 1,000.