TL7733BCDRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision Monitoring, Adjustable Thresholds
• Package: SOIC-8
• Essence: Ensures reliable power supply by monitoring voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 3.6V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Output Type: Active-Low, Open Drain
• Reset Timeout Period: 200ms (minimum)

Detailed Pin Configuration

The TL7733BCDRE4 has a standard SOIC-8 pin configuration:

1. GND: Ground connection
2. VCC: Positive supply voltage input
3. RESET: Active-low reset output
4. THRESHOLD: Threshold voltage selection pin
5. MR: Manual reset input
6. NC: No connection
7. NC: No connection
8. NC: No connection

Functional Features

• Monitors the supply voltage and asserts the reset signal when it falls below the threshold voltage.
• Provides an active-low reset output that remains asserted until the supply voltage rises above the threshold voltage for a specified timeout period.
• Offers adjustable threshold voltage options to suit different applications.
• Low quiescent current consumption ensures minimal power usage.

Advantages and Disadvantages

Advantages

• Precise voltage monitoring helps prevent system malfunction due to low supply voltage.
• Adjustable threshold voltage allows customization for specific requirements.
• Low power consumption extends battery life in portable devices.
• Small package size enables space-efficient designs.

Disadvantages

• Limited to monitoring single supply voltage.
• Manual reset input may require additional external components for proper functionality in some applications.

Working Principles

The TL7733BCDRE4 operates by continuously monitoring the supply voltage using an internal voltage reference and comparator. When the supply voltage drops below the selected threshold voltage, the reset output is asserted low. The reset signal remains active until the supply voltage rises above the threshold voltage for the specified timeout period. This ensures that the system is not released from the reset state prematurely due to temporary voltage fluctuations.

Detailed Application Field Plans

The TL7733BCDRE4 finds applications in various fields where reliable power supply monitoring is crucial. Some potential application areas include:

1. Microcontroller Systems: Ensures stable operation of microcontrollers by monitoring the supply voltage and initiating a reset if it falls below the specified threshold.
2. Industrial Control Systems: Provides voltage supervision in industrial control systems to prevent malfunctions caused by insufficient power supply.
3. Automotive Electronics: Monitors the vehicle's electrical system to ensure proper functioning of critical components and prevent damage due to voltage fluctuations.
4. Battery-Powered Devices: Protects battery-powered devices from operating at low voltages, prolonging battery life and preventing data loss.

Detailed and Complete Alternative Models

1. TL7705ACP: Voltage supervisor with fixed 4.55V threshold voltage, available in PDIP-8 package.
2. TL7712ACP: Dual voltage supervisor with adjustable threshold voltages, available in PDIP-8 package.
3. TL7702ACP: Voltage supervisor with fixed 2.93V threshold voltage, available in PDIP-8 package.
4. TL7700ACP: Voltage supervisor with fixed 4.38V threshold voltage, available in PDIP-8 package.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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