TLC7733QPWRG4

Product Overview

Category: Integrated Circuits (ICs)

Use: The TLC7733QPWRG4 is a voltage supervisor and reset IC that monitors the power supply voltage of a system. It provides a reset signal to the microcontroller or other digital logic when the voltage drops below a certain threshold, ensuring proper operation and preventing data corruption.

Characteristics: - Low-power consumption - Wide operating voltage range - Adjustable reset threshold - Precision voltage reference - Power-on reset delay time - Open-drain output - Small package size

Package: The TLC7733QPWRG4 is available in a small 8-pin TSSOP package, which makes it suitable for space-constrained applications.

Essence: The essence of the TLC7733QPWRG4 is its ability to monitor the power supply voltage and provide a reliable reset signal to the system, ensuring stable and error-free operation.

Packaging/Quantity: The TLC7733QPWRG4 is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Reset Threshold Voltage Range: 1.2V to 4.6V
• Power-On Reset Delay Time: 200ms (typical)
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The TLC7733QPWRG4 has the following pin configuration:

```

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| | --| VDD | --| GND | --| MR | --| RESET | --| THRESHOLD | --| OUT | --| NC | |___________| ```

Functional Features

1. Voltage Monitoring: The TLC7733QPWRG4 continuously monitors the power supply voltage and compares it to the user-adjustable threshold voltage.
2. Reset Generation: When the power supply voltage drops below the threshold, the TLC7733QPWRG4 asserts the reset signal, ensuring a controlled system reset.
3. Precision Voltage Reference: The integrated precision voltage reference ensures accurate monitoring of the power supply voltage.
4. Power-On Reset Delay: The TLC7733QPWRG4 provides a power-on reset delay time of 200ms, allowing the power supply voltage to stabilize before asserting the reset signal.
5. Open-Drain Output: The open-drain output allows for flexibility in connecting to different microcontrollers or digital logic circuits.

Advantages and Disadvantages

Advantages: - Low-power consumption makes it suitable for battery-powered applications. - Wide operating voltage range allows for compatibility with various power supply voltages. - Adjustable reset threshold provides flexibility in setting the desired voltage level for triggering the reset signal. - Small package size enables usage in space-constrained designs.

Disadvantages: - Lack of built-in hysteresis may result in multiple reset signals if the power supply voltage fluctuates around the threshold voltage. - Limited number of pins may restrict the integration of additional features in complex systems.

Working Principles

The TLC7733QPWRG4 operates by comparing the power supply voltage with the user-adjustable threshold voltage. When the power supply voltage falls below the threshold, the internal comparator triggers the reset signal, which remains asserted until the power supply voltage rises above the threshold again. The precision voltage reference ensures accurate voltage monitoring, while the power-on reset delay provides a stable reset signal during power-up.

Application Field Plans

The TLC7733QPWRG4 is widely used in various applications where reliable voltage monitoring and reset functionality are required. Some of the common application fields include:

1. Microcontroller Systems: The TLC7733QPWRG4 is commonly used in microcontroller-based systems to ensure proper operation and prevent data corruption during power supply voltage fluctuations.
2. Industrial Control Systems: It finds applications in industrial control systems, where stable operation is critical for process control and safety.
3. Automotive Electronics: The TLC7733QPWRG4 is suitable for automotive electronics, providing reset functionality to microcontrollers and other digital logic circuits in vehicles.
4. Consumer Electronics: It can be found in consumer electronic devices such as smart home appliances, ensuring reliable operation and preventing system crashes.

Alternative Models

• TLV803M: This voltage supervisor IC offers similar features and performance as the TLC7733QPWRG4, with a slightly different pin configuration.
• MAX809: Another alternative, the MAX809, provides voltage monitoring and reset functionality in a different package size and pin configuration.

These alternative models can be considered based on specific design requirements and availability.

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