TPS51216RUKT Integrated Circuits (ICs)

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The PMIC (power management IC) family of voltage regulators provides a wide range of solutions for special purposes. One such device is the TPS51216RUKT, an integrated switch mode regulator designed for applications where space is constrained and input/output voltage variations are expected. This particular device provides 5V regulated output (8A max for 2.5V to 5.5V input voltage) and is optimized for high efficiency and output ripple performance.

The TPS51216RUKT includes multiple features to further enhance its flexibility. First, it features an integrated synchronous buck boost controller that enables automatic buck-boost transition as the input voltage changes. This allows the device to maintain a 5V regulated output at low input voltage levels. Second, a Constant Output Voltage (COP) mode of operation is also available, which enables the output voltage to be maintained for a predetermined amount of time when the input voltage drops below a certain threshold. This feature makes the TPS51216RUKT well-suited for use in applications where the conditions of low input voltage and high output current are expected. Furthermore, the device includes digital soft-start, foldback current limit, UVLO, and thermal shutdown features.

The TPS51216RUKT is provided in a compact TSSOP-16 package. The small size of the package makes the device suitable for use in applications where space is constrained. In addition to this, the device is provided with a high-frequency switching frequency of 1.2 MHz, making it especially suited for applications where high processing speeds are necessary. Finally, since the device uses an external synchronous rectifier instead of an internal switch, an external Schottky diode is not required, providing an additional space saving advantage.

The TPS51216RUKT is designed for use in applications such as automotive, consumer, communications, and multimedia, among others, where current limitations and output voltage precision are desired. Its wide operating temperature range of -40°C to +125°C makes the device suitable for a variety of environmental conditions.

In terms of its working principle, the TPS51216RUKT uses a synchronous buck-boost voltage regulation technique. The device features an internal high-side n-channel MOSFET switch, an external synchronous boost rectifier, and a precision internal reference. When the input voltage is higher than the output voltage, the MOSFET is switched on and the device operates in buck mode. In this mode, the input voltage is regulated to the output voltage by adjusting the duty cycle of the MOSFET. When the input voltage is lower than the output voltage, the device enters boost mode, in which the device enters the synchronous boost regulator and the output voltage is generated through the synchronous boost rectifier. In this mode, the duty cycle of the MOSFET determines the output voltage.

Overall, the TPS51216RUKT is an excellent power management solution for applications where space and power requirements are of utmost importance. Its wide operating temperature range and compact package size make it ideal for use in places where traditional voltage regulators may not be suitable. Furthermore, its advanced features such as input voltage monitoring, automatic buck-boost transition, and COP mode of operation make it flexible and customizable in a wide range of applications.

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