TPS3838J25DBVR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	100 ms Minimum
Voltage - Threshold:	2.25V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	TPS3838J25

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1. Introduction

The TPS3838J25DBVR is an advanced power management integrated circuit (PMIC) specifically designed to provide superior system safety and protection against unexpected power faults, such as overvoltage, undervoltage, over-current and short circuit conditions. It is typically used in electronic systems that require high levels of reliability and robustness, such as industrial, automotive, medical and telecommunications systems. This device is a member of Texas Instruments\' Supervisors product family, which provides a full range of PMICs (switches, sequencers, hot-swapped, supervisory) for various system applications.

2. Features and Benefits

The TPS3838J25DBVR offers a variety of features and benefits that make it a popular choice for critically-protected systems. Its main features include:• High-accuracy voltage monitoring and reset threshold: The user-programmable reset threshold ensures an accurate trip point over industrial temperature and load operating ranges.• Wide input-voltage range: This PMIC can operate from 3.0 V to 5.5 V, making it suitable for a variety of systems.• Open-drain reset: This device provides an open-drain reset option, which enables it to work in systems with open-drain reset designs.• Low power consumption: The TPS3838J25DBVR consumes only 19.2 µA in its normal operation mode and only 0.46 µA in its ultra-low-power mode. This low power consumption minimizes power consumption, contributing to the overall energy efficiency of the system.• Flexible reset configurations: This device features a variety of reset configurations, including single-shot, cycle-by-cycle and one-shot technology, allowing it to support a wide range of system requirements.• Enhanced thermal performance: The device\'s robust design and optimized layout enable it to operate reliably in extreme temperatures (–40 °C to +125 °C).

3. Application Field and Working Principle

The TPS3838J25DBVR is typically used in systems which require safety and protection against unexpected power faults, such as overvoltage, undervoltage, over-current and short circuits. Its wide operational voltage range and robust thermal performance make it ideal for mission-critical applications, such as industrial, automotive, medical and telecommunications systems.The working principle of the TPS3838J25DBVR is fairly simple. The device monitors the voltage level of the system, and when the voltage reaches a certain level (programmable by the user), it triggers an active-low reset signal to reset the system. The length of the reset pulse depends on the configuration that is set. When the reset pulse length has expired, the device then re-enables the supply voltage. In addition, the device also features various reset configurations, such as single-shot, cycle-by-cycle and one-shot technology, allowing it to support different system requirements.

4. Conclusion

The TPS3838J25DBVR is a highly versatile PMIC specifically designed to provide superior system safety and protection against unexpected power faults. It is suitable for a wide range of industrial, automotive, medical and telecommunications systems, and its robust and reliable design makes it ideal for mission-critical applications that require high levels of protection. With its wide input voltage range and advanced reset configurations, the TPS3838J25DBVR is an excellent choice for applications where system safety and reliability are critical.

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