TPS3808G33DBVT

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PMIC - Supervisors are used in a wide range of applications to improve the reliability, stability, and intelligence of a system’s power supply. TPS3808G33DBVT is a supervisor from Texas Instruments that provides monitoring, management, and sequencing of up to four supplies from 1.54V to 5.5V. In this article, the application field and working principle of the TPS3808G33DBVT will be discussed.

Features of TPS3808G33DBVT

The TPS3808G33DBVT has an extended input voltage range of 1.54V to 5.5V, making it particularly well suited for applications such as those in automotive and industrial needs that require working over wide supply voltage ranges. Additionally, it allows the user to easily program the accurate trip points of the supply monitoring, allowing the designer to fine-tune their system’s power consumption to a great degree. The TPS3808G33DBVT also features very low power consumption when in a stand-by state due to its Active Low Power (ALR) mode.

The TPS3808G33DBVT also features up to four supply monitoring, which is available on a single package and in two different versions: the low-side version and the CPP (collector-connected to the power supply) version, which provides for an absolute measurement of the power supply. The TPS3808G33DBVT also features a single-channel watchdog timer, providing system protection with a precise timer out, an adjustable window and an active low output.

Applications of TPS3808G33DBVT

The TPS3808G33DBVT is well suited for automotive, industrial, white goods and consumer applications due to its wide input voltage range, low power consumption and low cost. The TPS3808G33DBVT is also suitable for applications requiring precision monitoring and sequencing, for example in battery charging applications. Applications where limited board space is of main concern, the TPS3808G33DBVT can provide a solution by combining many functions in one package.

Working Principle

The TPS3808G33DBVT provides a system power rail monitor and control by sensing the state of the power rail, monitoring the system input and output, and monitoring critical timing events for power-up and power-down sequencing. It monitors the status of four power supplies and provides a reset signal to the system to indicate when one of the power supply voltages has moved outside its programmed trip points.

The TPS3808G33DBVT provides a wide range of features that enable system designers to implement various features, such as power-fail protection, system reset on power-fail, power-on reset, brown-out reset, and undervoltage lockout. It also features a single-channel watchdog timer, providing system protection with a precise timer-out, an adjustable window and an active-low output.

Conclusion

The TPS3808G33DBVT from Texas Instruments provides a wide range of features and benefits, making it well suited for monitoring, management, and sequencing in automotive, industrial, white goods, and consumer applications. Its wide input voltage range and low power consumption make it particularly well suited for applications with high accuracy and limited space, and its single-channel watchdog timer provides system protection. The TPS3808G33DBVT is an ideal choice for system designers looking for cost-effective power supply monitoring and sequencing.

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