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Power management ICs for 32bit control MCUs

30 Nov 2011

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Texas Instruments Inc. (TI) has introduced a complete power management solution for TI's C2000 real-time control, 32bit microcontrollers (MCUs), and other DSP and FPGA processors. The TPS75005 power circuit comes in a thermally enhanced 5x5mm QFN package, combining two low-noise, 500mA low-dropout linear regulators (LDOs) and three supply voltage supervisors to provide ±5 percent power-rail accuracy for TI's F2833x, F2823x, F281x, F2801x and F280x microcontroller series.

The TPS75005 supports input voltages from 3.5V to 6.5V, and provides two power outputs controlled by an integrated sequencer circuit. A single EN logic input signal ensures the power-up and power-down requirements of the C2000 MCUs. The sequencer includes a soft-start for both LDOs to avoid inrush current. A third rail monitor also provides general power management functions, such as monitoring the input voltage.

The ICs are now available for volume orders in 20-pin, 5x5mm QFN packages. Prices start at $1.90 in 1,000-unit quantities. Designers can also use TPS75005's PSpice transient model simulation tool to speed design.




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