TPS40222DRPT

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The TPS40222DRPT is a monolithic high-efficiency dc-dc converter that combines an ultra-low quiescent current and an integrated low-side MOSFET switch. It is designed to provide low-noise supplies with low ripple at low input and output voltages. It is ideal for applications such as low power Wi-Fi applications requiring cost-effective, space-saving solutions.

The TPS40222DRPT comes in a 3mm x 3mm, 10-pin TSSOP package and has two switching modes; pulse width modulation (PWM) control and pulse frequency modulation (PFM) control. The PFM mode switches on when the input voltage is below a certain threshold and the PWM mode switches on when the input voltage is higher than a certain threshold. This mode hopping feature helps to conserve energy and improve system efficiency.

TPS40222DRPT has a wide operating temperature range from -40°C to +125°C and operates from a wide input voltage range of 2.5V up to 25V. It provides an adjustable output voltage range between 0.6V and 20V and has an adjustable reference voltage from 0.8V to 2.5V. The maximum output current is 1A and the switching frequency can be adjusted from 200kHz to 2MHz.

The operating principle of TPS40222DRPT is similar to other types of DC-DC switching regulators. It uses an internal voltage reference to compare the input voltage to the output voltage. When the input voltage is greater than the output voltage, the integrated low-side MOSFET switch is turned on, resulting in current being drawn from the input to the output. As the output voltage rises, the internal voltage reference decreases, thus turning off the switch. This action is repeated at very high frequencies, resulting in a regulated output voltage.

This device has many features which make it ideal for applications such as tablets or ultra-mobile PC\'s where space and thermal concerns are important. It has an internal 1.2A power switch, adjustable switching frequency, and programmable soft-start. The 1-Amp switch and robust short circuit protection minimize external components, while the factory-programmed options allow users to create a custom solution. Quiet and smooth operation is ensured by the ripple rejection setting and multiple output current options.

Overall, the TPS40222DRPT is an excellent DC-DC switching regulator designed to provide cost-effective, space-saving solutions. Its wide operating temperature range, programmable switching frequency, integrated low-side MOSFET switch, and low quiescent current make it ideal for a wide range of applications. It is an efficient and reliable choice for providing regulated power in low-power Wi-Fi applications.

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