TLV803SDBZT

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Reset Threshold Voltage - Manual Reset Input - Open Drain Output - Small Package Size

Package: SOT-23-5

Essence: The TLV803SDBZT is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other devices when the voltage falls below a certain threshold.

Packaging/Quantity: The TLV803SDBZT is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: 2.32V, 2.93V, 3.08V, 4.38V
• Quiescent Current: 1.5µA (typical)
• Manual Reset Input Voltage: 0.8V (minimum)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TLV803SDBZT has a total of 5 pins:

1. GND: Ground pin
2. MR: Manual Reset input pin
3. VDD: Positive power supply pin
4. RESET: Open drain reset output pin
5. VOUT: Voltage monitor output pin

Functional Features

• Voltage Monitoring: The TLV803SDBZT continuously monitors the supply voltage and asserts the reset signal when it falls below the set threshold.
• Adjustable Reset Threshold: The reset threshold voltage can be adjusted by selecting the appropriate resistor values connected to the MR pin.
• Manual Reset Input: The MR pin allows for a manual reset input, which can be used to force a system reset.
• Open Drain Output: The RESET pin is an open drain output, allowing it to be connected to other devices with different voltage levels.
• Low Power Consumption: The TLV803SDBZT operates with low quiescent current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows for compatibility with various systems. - Adjustable reset threshold provides flexibility in setting the desired voltage level for triggering a reset. - Low power consumption helps conserve battery life in portable devices. - Small package size (SOT-23-5) enables space-saving designs.

Disadvantages: - Lack of built-in hysteresis may result in potential noise-related issues during voltage transitions. - Limited number of available reset threshold voltage options may not cover all specific application requirements.

Working Principles

The TLV803SDBZT works by comparing the supply voltage with the set threshold voltage. When the supply voltage drops below the threshold, the internal comparator triggers the reset signal, which pulls the RESET pin low. This reset signal can be used to initiate a system reset or perform other necessary actions.

Detailed Application Field Plans

The TLV803SDBZT is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some typical application fields include:

1. Microcontroller Systems: The TLV803SDBZT ensures proper operation of microcontroller-based systems by providing a reset signal when the supply voltage falls below the specified threshold.
2. Embedded Systems: It is widely used in embedded systems to monitor the power supply voltage and initiate a reset if necessary, ensuring stable and reliable operation.
3. Battery-Powered Devices: The low power consumption of the TLV803SDBZT makes it suitable for battery-powered devices, such as portable electronics and IoT devices, where efficient power management is crucial.
4. Industrial Control Systems: The TLV803SDBZT finds applications in industrial control systems to monitor the power supply voltage and ensure safe operation by initiating a reset in case of voltage fluctuations or failures.

Detailed and Complete Alternative Models

1. TLV803M: Similar to TLV803SDBZT, but available in an SOT-23-6 package with an additional RESET pin for improved flexibility.
2. TLV809: Offers similar voltage monitoring and reset functionality, but with a wider range of available reset threshold voltage options.
3. MAX803: An alternative from Maxim Integrated, providing voltage supervision and reset generation capabilities with various package options.

These alternative models offer similar features and can be considered based on specific application requirements and preferences.

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