TI Presents New TPS61107 Converter/Regulator
Texas Instruments Inc. (TI, Dallas, TX) announced a new synchronous step-up, dc/dc converter with a low dropout (LDO) linear regulator that will allow battery capacity to be used more efficiently. Targeting hand-held applications powered by common battery types, the new TPS61107, part of TI's recently announced TPS611x family of dc/dc converter/LDO power management ICs, offers a complete, cost-efficient, power supply solution for systems powered by single- and dual-cell alkaline, NiCd and NiMH batteries.
The TPS61107 features pulse-width modulation switching that results in up to 95-percent conversion efficiency; and two stable output voltages, 3.3V with the boost converter stage and 1.8V with the LDO stage. The TPS61107 can be disabled to minimize battery drain. During shutdown of a portable device, the power load is completely disconnected from the battery. A low-electromagnetic interference mode is implemented in the device to lower the radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The built-in LDO can be used for a second 1.8V output voltage derived either from the boost output or directly from the battery.
The TPS61107 device is available in volume in a 20-pin, thin-shrink, small-outline package (TSSOP), or in a 24-pin, QFN package. Pricing for the TPS61107 is $1.75 per 1,000 units.