TCM812SERCTR

Product Overview

Category: Integrated Circuit (IC)

Use: The TCM812SERCTR is a voltage supervisor IC that monitors the power supply voltage of electronic devices and provides reset signals to ensure proper system operation.

Characteristics: - Voltage monitoring range: 0.8V to 5.0V - Reset threshold accuracy: ±1.5% - Low quiescent current: 2.5µA - Power-on reset delay time: 100ms - Active-low push-pull reset output - Small package size: SOT-23-3 - RoHS compliant

Package: The TCM812SERCTR is available in a small SOT-23-3 package, which is suitable for space-constrained applications.

Essence: This IC acts as a reliable voltage supervisor, ensuring stable operation of electronic devices by monitoring the power supply voltage and generating reset signals when necessary.

Packaging/Quantity: The TCM812SERCTR is typically sold in reels containing 3000 units per reel.

Specifications

• Supply Voltage Range: 0.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Options: 2.93V, 3.08V, 3.30V, 4.38V, and custom options available
• Output Type: Active-low push-pull reset
• Quiescent Current: 2.5µA (typical)
• Power-On Reset Delay Time: 100ms (typical)

Detailed Pin Configuration

The TCM812SERCTR features a standard SOT-23-3 package with the following pin configuration:

┌───┐ RESET | | GND | | VDD |___|

• RESET: Active-low push-pull reset output
• GND: Ground connection
• VDD: Power supply voltage input

Functional Features

1. Voltage Monitoring: The TCM812SERCTR continuously monitors the power supply voltage and compares it with the preset threshold.
2. Reset Generation: When the power supply voltage falls below the threshold, the IC generates an active-low reset signal to initiate system reset.
3. Power-On Reset Delay: The IC incorporates a 100ms delay to ensure stable power-on reset operation during power-up.

Advantages and Disadvantages

Advantages: - Wide operating voltage range allows compatibility with various electronic devices. - Accurate reset threshold ensures reliable system reset. - Low quiescent current minimizes power consumption. - Small package size enables use in space-constrained applications. - RoHS compliance ensures environmental friendliness.

Disadvantages: - Limited reset threshold options may not cover all voltage requirements. - Lack of adjustable reset delay time may limit customization for specific applications.

Working Principles

The TCM812SERCTR operates by comparing the power supply voltage with the preset threshold voltage. If the voltage drops below the threshold, indicating a potential power loss or instability, the IC generates an active-low reset signal. This signal can be used to reset microcontrollers, digital logic circuits, or other electronic devices, ensuring proper system operation.

Detailed Application Field Plans

The TCM812SERCTR is widely used in various electronic systems that require reliable power supply monitoring and reset functionality. Some common application fields include:

1. Microcontroller Systems: The IC provides essential voltage supervision and reset capabilities for microcontroller-based systems, preventing erratic behavior during power fluctuations.
2. Industrial Control Systems: It ensures stable operation of industrial control systems by monitoring the power supply voltage and initiating system reset when necessary.
3. Automotive Electronics: The TCM812SERCTR is suitable for automotive applications, where voltage monitoring and reset functionality are crucial for maintaining system integrity.
4. Consumer Electronics: It finds application in consumer electronic devices such as smart home systems, IoT devices, and portable electronics, ensuring reliable operation and preventing data corruption.

Detailed and Complete Alternative Models

1. TCM809SERCTR: Similar to the TCM812SERCTR, but with a different package (SOT-23-5) and additional features like manual reset input and adjustable reset delay time.
2. MAX809SERCTR: A voltage supervisor IC with similar characteristics and package (SOT-23-3), offering adjustable reset threshold options and low power consumption.
3. ADM708SERCTR: This IC provides voltage monitoring and reset functions in a SOT-23-3 package, with an extended operating temperature range and adjustable reset delay time.

These alternative models offer similar functionality to the TCM812SERCTR and can be considered based on specific requirements and design constraints.

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