TPS3125J12DBVTG4

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Power management integrated circuits (PMICs) are devices that provide power regulation and control solutions for electronics systems. They are designed with specific, dedicated functions to regulate, supervise, and condition power in electronic systems where the power usually comes from the external sources or from storage. PMICs comprise a variety of components such as regulators, supervisors, transceivers and converters, to ensure efficient power operations in the most efficient way possible. To ensure the smooth operation of these devices, it is important to take a look at their working principles and application fields. In this article, we will discuss the TPS3125J12DBVTG4 - a device in the series of PMICs that belongs to the Supervisors category.

What is the TPS3125J12DBVTG4

The TPS3125J12DBVTG4 is a robust, easy-to-use voltage supervisor with high currents and high-voltage operation. It consists of a precision voltage reference, a comparator and an n-channel MOSFET with integrated gate drive. It is designed and optimized for quick power-on/off control and reset generation. It can operate from voltage inputs as high as a 5.5V to as low as a 2.6V, making it extremely versatile and able to be applied to a wide variety of applications.

What are its applications?

The TPS3125J12DBVTG4 can be used in a wide variety of applications, ranging from consumer electronics and automotive applications to industrial, medical and communications systems. It can be used to provide reset signals for microprocessor systems, detect over and under-voltage conditions, and provide power on/off control. It can also be used in surge protection applications, as well as over temperature, and over current conditions. Additionally, it can be used to monitor system voltages, signal low voltage conditions and provide programmable, electronic circuit fuse protection.

How does it work?

The TPS3125J12DBVTG4 monitors an input voltage and generates an output LOW signal when the input voltage drops below the threshold voltage (VTH). The output LOW signal can be used to reset microcontrollers or turn off power supplies. The output is also active-low, meaning it will be asserted (LOW) when the input voltage is below VTH, and de-asserted (HIGH) when the input voltage is above VTH. The output signal is debounced with an internal timer, so the reset signal is delayed a few milliseconds after the input voltage has crossed the threshold.

The TPS3125J12DBVTG4 also features a power-on reset (POR) circuit that helps ensure the electronic system is in a known state each time it is powered on. This POR circuit is enabled when the POR pin is pulled low, and can be activated on any rising voltage edge. Once the POR has been activated, the device will stay activated for as long as it is powered, until the POR pin is pulled low again.

What are the advantages of the TPS3125J12DBVTG4?

The TPS3125J12DBVTG4 provides a wide input range of 2.6V to 5.5V and can be used with either high or low output voltage applications. It also has a high current capability (30mA POR, 15mA regular), and includes an adjustable output threshold voltage (2.2V to 5.5V). The device is packaged in a compact, thermally enhanced 8-pin WSON package, making it easy to integrate into systems with a small footprint. In addition, the device features a low quiescent current of 2μA (without POR) and low input-to-output offsets of less than ±10mV, making it ideal for low power applications.

Overall, the TPS3125J12DBVTG4 is a robust, versatile voltage supervisor with high accuracy, high current capability, and small footprint. It can be used in a variety of applications, including reset circuitry for microprocessors, power on/off control, surge protection, over temperature, over current, and other monitoring applications. Its wide input voltage range and small package size make it easy to integrate into systems with minimal overhead, while its low quiescent current and low input-to-output offset make it a great choice for low power applications.

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