TLV803SDBZT - Voltage Supervisor IC by Texas Instruments

The TLV803SDBZT from Texas Instruments is a compact, low-power voltage supervisor designed to monitor voltages in a wide range of electronic applications. This integrated circuit (IC) ensures that microprocessors, microcontrollers, and other voltage-sensitive devices operate within their proper voltage supply limits, enhancing system reliability and preventing potential damage due to unexpected voltage fluctuations.

This voltage supervisor IC features a fixed-sense threshold voltage of 2.93V which makes it ideal for 3.3V systems. Once the supply voltage (V_CC) falls below the threshold, the TLV803SDBZT asserts a reset signal, holding the connected microprocessor in a reset state until V_CC returns to an acceptable level. The reset output remains active for a preset delay time after V_CC has risen above the threshold, ensuring system stability.

The TLV803SDBZT comes in a small, 3-pin SOT-23 package, making it suitable for space-constrained applications. Its low quiescent current of 3 µA (typical) is particularly beneficial in portable and battery-powered devices, where power conservation is crucial. The device also features a built-in hysteresis to prevent false triggering due to transient conditions on the monitored supply line.

Key features of the TLV803SDBZT include:

• Supply voltage supervision range: 2.93V fixed threshold
• Low quiescent current: 3 µA (typical)
• Reset delay time: 200 ms (minimum)
• Open-drain active-low RESET output
• Built-in hysteresis for noise immunity
• Operating temperature range: -40°C to +125°C
• Package: 3-pin SOT-23

The TLV803SDBZT is an excellent choice for applications requiring precise voltage monitoring, such as IoT devices, portable electronics, automotive systems, and industrial controls. Its ease of use, combined with Texas Instruments' reputation for quality and reliability, makes it a trusted component for safeguarding critical system operations against undervoltage conditions.