TCM811RERCTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the voltage level of a power supply - Generates a reset signal when the voltage falls below a specified threshold - Prevents erratic behavior or data corruption in electronic systems during power-up and power-down sequences

Package: SOT-23-5

Essence: The TCM811RERCTR is a voltage supervisor IC designed to ensure stable operation of electronic systems by monitoring the power supply voltage.

Packaging/Quantity: The TCM811RERCTR is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V, 4.63V, 4.88V
• Reset Timeout Period Options: 140ms, 280ms, 560ms, 1120ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TCM811RERCTR has a total of five pins:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VDD: Positive power supply input
5. VBAT: Backup battery input for low-power applications

Functional Features

1. Voltage Monitoring: The TCM811RERCTR continuously monitors the power supply voltage and compares it to the preset threshold voltage.
2. Reset Generation: When the power supply voltage falls below the threshold voltage, the TCM811RERCTR generates an active-low reset signal.
3. Manual Reset: The MR pin allows for manual reset capability, enabling external control of the reset signal.
4. Power-On Reset Delay: The TCM811RERCTR includes a power-on reset delay to ensure stable operation during power-up sequences.

Advantages and Disadvantages

Advantages: - Compact SOT-23-5 package for space-constrained applications - Wide supply voltage range allows for versatile use in various systems - Multiple reset threshold and timeout options provide flexibility - Manual reset capability offers additional control

Disadvantages: - Limited backup battery input (VBAT) functionality compared to dedicated supervisor ICs - Lack of adjustable reset threshold voltage limits customization options

Working Principles

The TCM811RERCTR operates by continuously monitoring the power supply voltage using an internal voltage comparator. When the voltage falls below the preset threshold, the internal logic generates an active-low reset signal. This signal remains active until the voltage rises above the threshold or a manual reset is triggered through the MR pin.

Detailed Application Field Plans

The TCM811RERCTR is commonly used in a wide range of electronic systems where stable operation is critical during power-up and power-down sequences. Some typical application fields include:

1. Microcontrollers and Microprocessors: Ensures reliable system initialization and prevents data corruption during power transitions.
2. Communication Systems: Maintains stable operation during power fluctuations, preventing loss of critical data or communication disruptions.
3. Industrial Control Systems: Protects sensitive equipment from erratic behavior caused by unstable power supply conditions.
4. Automotive Electronics: Ensures proper functioning of automotive control units during start-up and shutdown processes.

Detailed and Complete Alternative Models

1. TCM809RERCTR: Similar to TCM811RERCTR but with fixed reset threshold voltage options.
2. MAX811RERCTR: Voltage supervisor IC with similar features and package, offered by a different manufacturer.
3. TL7705AIP: Alternative voltage supervisor IC with adjustable reset threshold voltage and timeout period options.

Note: This is not an exhaustive list of alternative models, but provides a few examples for reference.

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