TPS40061PWP

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TPS40061PWP is a DC-DC switching controller from the voltage regulator family of integrated circuits. Usually coupled with an external power switch like FETs or MOSFETs, the device is targeted for applications like the main CPU, I/O chips and memory chips in computer motherboards, laptop power and other industrial power distribution systems. It has a wide operating input voltage range with high switching performance to fulfill all kinds of power management and current requirements.

The chip is based on pulse width modulation (PWM) technique, and its internal feedback architecture allows it to detect the current drawn from the output. With this feedback, the overcurrent loop becomes independent of the output resistance. The TPS40061PWP is also protected against short circuits, inrush current, open and shorted feedback conditions, as well as overvoltage, overcurrent and thermal protection conditions.

The device\'s working principle is based on a switched-mode regulator. This type of regulator circulates a current through an inductor at a constant rate and is switched on and off, typically by a transistor to produce a pulsed waveform. When an inductor is switched off, it stores energy. Once the transistor is turned off, the inductor releases the energy and provides current to the load. To reduce noise and improve the current capacity, a capacitor is usually included in the circuit. The regulator\'s output is further regulated by replacing the constant on-time of the regulator with a continually varying pulse width, resulting in a pulse width modulated waveform.

The TPS40061PWP features a wide operating voltage range of 2.9V to 6V, low current consumption of 12μA (at 5.5V input), and adjustable soft-start time and output current. It provides high-level integrated features such as pulse-by-pulse current limitation, overvoltage protection, undervoltage lockout and over-temperature Shutdown. It can also be configured to generate an overtemperature alert signal.

In summary, the TPS40061PWP is an ideal choice for applications in the fields of main CPU, I/O chips and memory chips in computer motherboards, laptop power and other industrial power distribution systems. With its wide operating voltage range, low current consumption, adjustable soft-start time and output current, and integrated protection features, it can provide a great solution for power management and current requirements.

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