TLC7733ID

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Programmable Delay
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Monitors and controls voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Output Type: Active Low/Open Drain
• Adjustable Delay Time Range: 1ms to 10s
• Quiescent Current: 20µA (typical)

Detailed Pin Configuration

The TLC7733ID has a total of 8 pins:

1. GND: Ground reference for the IC.
2. VDD: Positive supply voltage input.
3. RESET: Active low/open drain output indicating system reset.
4. THRESH: Threshold voltage input for monitoring.
5. DELAY: Delay time programming pin.
6. CT: Capacitor connection for delay time adjustment.
7. SENSE: Sense voltage input for monitoring.
8. OUT: Output pin for monitoring voltage level.

Functional Features

• Voltage Monitoring: The TLC7733ID continuously monitors the voltage level at the SENSE pin and compares it with the threshold voltage set at the THRESH pin.
• Programmable Delay: The delay time between the voltage crossing the threshold and the RESET signal can be adjusted using an external capacitor connected to the CT pin.
• Precision Monitoring: The device provides accurate voltage monitoring with a typical threshold accuracy of ±1%.
• Low Power Consumption: With a quiescent current of only 20µA, the TLC7733ID is designed for low-power applications.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Adjustable delay time provides flexibility in system reset timing.
• Low quiescent current minimizes power consumption.
• Accurate voltage monitoring ensures reliable system operation.

Disadvantages

• The SOIC package may not be suitable for space-constrained applications.
• Limited to monitoring a single voltage level.

Working Principles

The TLC7733ID operates by comparing the voltage at the SENSE pin with the threshold voltage set at the THRESH pin. When the voltage at the SENSE pin falls below the threshold, the RESET pin is activated, indicating a system reset. The delay between the voltage crossing the threshold and the RESET signal can be adjusted using an external capacitor connected to the CT pin.

Detailed Application Field Plans

The TLC7733ID is commonly used in various electronic systems where precise voltage monitoring and system reset functionality are required. Some application fields include:

1. Power Supply Monitoring: Ensuring stable power supply voltages in microcontrollers, digital circuits, and communication devices.
2. Battery Management: Monitoring battery voltage levels in portable devices, ensuring safe operation and preventing over-discharge.
3. Industrial Control Systems: Providing voltage supervision in industrial automation systems, protecting sensitive equipment from voltage fluctuations.
4. Automotive Electronics: Monitoring critical voltage levels in automotive systems, triggering system resets in case of voltage anomalies.

Detailed and Complete Alternative Models

1. TL7705ACP: Voltage supervisor IC with fixed delay time and adjustable threshold voltage.
2. MAX823: Microprocessor supervisory circuit with adjustable delay time and watchdog timer functionality.
3. LTC2917: Precision voltage monitor with adjustable threshold voltage and programmable delay.

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