The TPS6211x devices are a family of low-noise synchronous step-down DC-DC converters from Texas Instruments that are ideally suited for systems powered from a 2-cell Li-ion battery or from a 12 V or 15 V rail.
The TPS6211x is a synchronous PWM converter 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 synchronised 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 the shutdown mode, the current consumption is reduced to less than 2 μA.
The 95% efficient devices can supply an output current up to 1,5 A. Output voltage is 1,2 to 16 V adj. or 3,3 V or 5 V fixed (input voltage 3,1 to 17 V).
The TPS6211x is available in the 16-pin (RSA) QFN package, and operates over a free-air temperature range of -40 to 85°C.
For more information contact Rodney Farrow, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected]
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