Description
The TPS62111RSAR devices are a family of low-noisesynchronous step-down DC-DC
converters that areideally suited for systems powered from a 2- to
4-cellLi-ion battery or from a 12-V or 15-V rail.The TPS6211x
devices are synchronous pulse widthmodulation (PWM) converters with
integrated N- andP-channel power MOSFET switches.
Synchronousrectification is used to increase efficiency and
toreduce external component count.
To achieve highestefficiency over a wide load-current range,
theconverter enters a power-saving, pulse frequencymodulation (PFM)
mode at light load currents.Operating frequency is typically 1 MHz,
allowing theuse of small inductor and capacitor values. Thedevice
can be synchronized to an external clocksignal in the range of 0.8
MHz to 1.4 MHz. For low-noise operation, the converter can be
operated inPWM-only mode. in shutdown mode, the currentconsumption
is reduced to less than 2 uA. TheTPS6211x family of devices are
available in the 16pin (RSA) VQFN package, and operate over a
free-air temperature range of -40'C to 85'C.
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