TPS3823-25DBVR

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The TPS3823-25DBVR is a type of power management integrated circuit (PMIC), specifically assigned to the supervisors category. It is a member of Texas Instruments (TI)\'s TPS38xx family, a group of microprocessor supervisory circuits which feature a windowed Watchdog Timer (WDT) with a programmable reset threshold, multiple reset outputs, an input power-good reset function, plus options for manual reset and power-on reset functions. The TPS38xx family provides accurate supply voltage monitoring and voltage-level detection.

The TPS3823-25DBVR provides the following working principle: it monitors power and ground signals, and when a power failure, low-voltage or brown-out situation is detected, the TPS3823-25DBVR delivers reset and warning signals. The TPS3823-25DBVR also features a windowed watchdog timer with programmable reset (opto-coupler) threshold and input power-good reset. An integrated circuit (IC) manually reset (push button) and power-on reset (POR) are also available.

The TPS3823-25DBVR supports an extended temperature range of -40 to +105ᵒC and is typically used in automotive, industrial control and communications equipment. The chip is available in TDPAJ and SSOBC packages, both with adjustable and fixed threshold ranges. The TPS3823-25DBVR simplifies the design of voltage supervision and device resetting requirements in applications such as industrial, military, medical and communication systems.

The Pulse Width Modulation (PWM) output of the TPS3823-25DBVR can be used as a status indicator for indicating the condition of the system. It can also be used to provide a dynamic power-management scheme for efficiently managing the power supply of the system. When the TPS3823-25DBVR detects a low-voltage situation, it will disable the PWM output, so that the microcontroller can reduce or shut off certain parts of the system safely.

The TPS3823-25DBVR has adjustable and fixed reset thresholds, which are nominally set at 1.07 V and 1.235 V. These reset thresholds can be adjusted to cater to the needs of different applications. The reset duration is adjustable up to 500 ms, giving the system designer control over the length of reset protection. The reset circuit is also protected by a two-level watchdog timer with adjustable timeout intervals.

Overall, the TPS3823-25DBVR offers a cost-effective solution for programmable reset thresholds and reset duration, enabling developers to reliably monitor power and protect their systems from voltage drop or power supply failure events. It offers a flexibility in reset scheduling and reset protection, reducing design time and ensuring system stability and safety.

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