Texas Instruments

TPS3103K33DBVRG4

TPS3103K33DBVRG4 Description

The TPS3103K33DBVRG4 is a precision voltage supervisor IC from Texas Instruments, designed to monitor single-voltage power supplies in electronic systems. Housed in a compact SOT23-6 package, this obsolete but reliable component ensures system integrity by generating a reset signal when the supply voltage falls below the fixed threshold of 2.941V. With an open-drain or open-collector output, it provides flexibility for interfacing with various logic levels. The device features a 65ms minimum reset timeout, ensuring stable operation during power-up or brownout conditions. Compliant with ROHS3 and REACH standards, it is suitable for environmentally conscious designs.

TPS3103K33DBVRG4 Features

• Fixed Threshold Voltage: Precisely monitors 3.3V rails with a 2.941V threshold, ensuring accurate power-fail detection.
• Open-Drain Output: Allows easy integration with different logic families and pull-up voltages.
• 65ms Reset Timeout: Guarantees sufficient delay for MCU/MPU stabilization after power recovery.
• Low Power Consumption: Optimized for energy-sensitive applications.
• Surface-Mount SOT23-6 Package: Saves board space in compact designs.
• RoHS3 & REACH Compliant: Meets stringent environmental regulations.

TPS3103K33DBVRG4 Applications

• Embedded Systems: Ensures reliable microcontroller reset in industrial and consumer electronics.
• Battery-Powered Devices: Protects against undervoltage in portable equipment.
• Automotive Electronics: Monitors power rails in infotainment or control modules (though obsolescence may limit new designs).
• IoT & Wearables: Provides voltage supervision in space-constrained, low-power applications.

Conclusion of TPS3103K33DBVRG4

The TPS3103K33DBVRG4 is a robust, single-channel voltage supervisor ideal for systems requiring precise power monitoring. Its fixed threshold, open-drain output, and compact footprint make it a versatile choice for legacy or cost-sensitive designs. While marked obsolete, its reliability in undervoltage protection ensures continued relevance in maintenance or long-lifecycle applications. Engineers should evaluate alternative TI supervisors for new designs while considering this IC for proven performance in existing systems.