The TPS6211x devices are a family of low-noise synchronous step-down DC-DC converters
that are ideally suited for systems powered from a 2- to 4-cell Li-ion battery or from a 12-V or
15-V rail.
The TPS6211x devices are synchronous pulse width modulation (PWM) converters with
integrated N- and P-channel power MOSFET switches. Synchronous rectification is used to increase
efficiency and to reduce external component count. To achieve highest efficiency over a wide
load-current range, the converter enters a power-saving, pulse frequency modulation (PFM) mode at
light load currents. Operating frequency is typically 1 MHz, allowing the use of small inductor and
capacitor values. The device can be synchronized to an external clock signal in the range of 0.8
MHz to 1.4 MHz. For low-noise operation, the converter can be operated in PWM-only mode. In
shutdown mode, the current consumption is reduced to less than 2 µA. The TPS6211x family of devices
are available in the 16-pin (RSA) VQFN package, and operate over a free-air temperature range of
–40°C to 85°C.
