TLC7701MPWREP

Product Overview

Category: Integrated Circuits (ICs)

Use: The TLC7701MPWREP is a voltage supervisor and reset generator IC. It is designed to monitor the power supply voltage of electronic systems and provide a reset signal when the voltage falls below a certain threshold.

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

Package: The TLC7701MPWREP is available in a miniature SOT-23-5 package, which is compact and suitable for space-constrained applications.

Essence: The essence of the TLC7701MPWREP is its ability to ensure reliable operation of electronic systems by monitoring the power supply voltage and generating a reset signal when necessary.

Packaging/Quantity: The TLC7701MPWREP is typically sold in reels or tubes containing a quantity of 3000 units per package.

Specifications

• Supply Voltage Range: 1.8V to 6V
• Reset Threshold Voltage: Adjustable from 0.4V to VDD-0.2V
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Open-drain
• Power-On Reset Delay: 200ms (typical)

Detailed Pin Configuration

The TLC7701MPWREP has a total of five pins:

1. GND: Ground connection.
2. VDD: Positive power supply input.
3. RESET: Open-drain reset output.
4. THRESHOLD: Input pin to set the reset threshold voltage.
5. MR: Master Reset input for manual reset control.

Functional Features

1. Voltage Monitoring: The TLC7701MPWREP continuously monitors the power supply voltage and compares it with the user-adjustable threshold voltage.
2. Reset Generation: When the power supply voltage falls below the threshold, the TLC7701MPWREP generates a reset signal on the RESET pin.
3. Precision Reference: The IC incorporates a precision voltage reference to ensure accurate monitoring and reliable reset generation.
4. Open-Drain Output: The RESET pin is an open-drain output, allowing easy interfacing with other devices.
5. Adjustable Threshold: The threshold voltage can be set using an external resistor divider connected to the THRESHOLD pin.
6. Manual Reset Control: The MR pin allows manual control of the reset function, overriding the automatic monitoring.

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered applications. - Wide operating voltage range enables compatibility with various systems. - Adjustable reset threshold provides flexibility for different voltage levels. - Small package size allows for space-saving designs. - Precision voltage reference ensures accurate monitoring.

Disadvantages: - Lack of built-in hysteresis may lead to potential noise-induced false triggering. - Limited number of pins may restrict additional functionality in complex systems.

Working Principles

The TLC7701MPWREP operates by comparing the power supply voltage with the user-defined threshold voltage. When the power supply voltage drops below the threshold, the internal circuitry triggers the reset function, pulling the RESET pin low. This reset signal can be used to initialize or restart the system, ensuring proper operation even under low voltage conditions.

Detailed Application Field Plans

The TLC7701MPWREP finds applications in various electronic systems where reliable power supply monitoring and reset generation are crucial. Some specific application fields include:

1. Microcontrollers: Ensures proper initialization and reliable operation of microcontroller-based systems.
2. Embedded Systems: Provides a reset signal to restart embedded systems in case of power supply voltage fluctuations.
3. Industrial Control Systems: Monitors power supply voltage in industrial control systems, preventing malfunctions due to voltage drops.
4. Automotive Electronics: Ensures stable operation of automotive electronic systems by generating resets during voltage dips or transients.
5. Battery-Powered Devices: Protects battery-powered devices from operating at low voltages, preserving battery life and preventing data corruption.

Detailed and Complete Alternative Models

1. TLC7703MPWREP: Similar to TLC7701MPWREP but with three threshold voltage options.
2. MAX823LCPA+: Voltage supervisor IC with adjustable reset threshold and push-pull output.
3. ADM708RARZ: Microprocessor supervisory circuit with adjustable reset threshold and watchdog timer.
4. MIC803-29D2VC3TR: Low-power voltage monitor with fixed reset threshold and open-drain output.
5. TC54VN2902ECB713: Precision voltage detector with adjustable reset threshold and active-low reset output.

These alternative models offer similar functionality and can be considered