TPS3803-01DCKR: A Reliable Voltage Supervisor IC

The TPS3803-01DCKR is a voltage supervisor IC from Texas Instruments (TI) that provides circuit initialization and timing supervision primarily for DSPs (Digital Signal Processors) and processor-based systems. This device ensures the stable operation of electronic systems by monitoring the power supply voltage and asserting a reset signal if the voltage drops below a predefined threshold.

Key Features

• Adjustable Threshold Voltage: The TPS3803-01DCKR features an adjustable sense input, allowing users to configure the threshold voltage according to their specific requirements. This flexibility makes it suitable for a wide range of applications with different power supply needs.
• Open-Drain Reset Output: The device has an active-low, open-drain reset output. This means that when the supply voltage drops below the threshold, the reset output is pulled low, signaling the system to reset. The open-drain configuration allows multiple devices to be connected in parallel, providing additional design flexibility.
• Compact Package: The TPS3803-01DCKR comes in a five-pin SC-70 package, which is compact and suitable for space-constrained applications. Its small size and surface-mount technology (SMT) compatibility make it easy to integrate into modern electronic devices.
• Wide Operating Temperature Range: This IC is characterized for operation over a temperature range of -40°C to 125°C, ensuring reliable performance in various environmental conditions.
• Low Supply Current: With a typical supply current of 3 µA at VDD = 3.3 V, the TPS3803-01DCKR consumes minimal power, making it suitable for portable and battery-powered equipment.
• High Threshold Voltage Accuracy: The device offers high ±1.5% threshold voltage accuracy, ensuring precise monitoring of the power supply voltage.

Applications

Due to its reliable performance and compact packaging, the TPS3803-01DCKR is widely used in various applications, including:

• DSPs and Processor-Based Systems: These systems require stable power supply voltage to ensure correct operation. The TPS3803-01DCKR provides circuit initialization and timing supervision, ensuring that the system resets if the power supply voltage drops below the threshold.
• Wireless Communication Systems: In wireless communication systems, the stability of the power supply is crucial for maintaining communication quality. The TPS3803-01DCKR helps to ensure this stability by monitoring the power supply voltage and asserting a reset signal if necessary.
• Portable and Battery-Powered Equipment: These devices often have limited power budgets and require efficient power management. The low supply current and compact packaging of the TPS3803-01DCKR make it an ideal choice for these applications.

In summary, the TPS3803-01DCKR is a reliable voltage supervisor IC from Texas Instruments that offers adjustable threshold voltage, open-drain reset output, compact packaging, wide operating temperature range, low supply current, and high threshold voltage accuracy. Its versatile features make it suitable for a wide range of applications, including DSPs, processor-based systems, wireless communication systems, and portable and battery-powered equipment.