TL7705ACDRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Precision monitoring, low power consumption, wide supply voltage range
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Monitors the voltage level of a system and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 18V
• Reset Threshold Voltage: Adjustable from 1.2V to 6.6V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 40µA typical
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TL7705ACDRG4 has a total of 8 pins:

1. VCC: Supply voltage input
2. GND: Ground reference
3. MR: Manual Reset input
4. RESET: Reset output
5. TH: Threshold voltage adjustment pin
6. CT: Timeout period adjustment pin
7. SENSE: Voltage monitoring input
8. NC: No connection

Functional Features

• Precision voltage monitoring with adjustable threshold
• Programmable reset timeout period
• Open-drain reset output
• Manual reset capability
• Low quiescent current for power-sensitive applications
• Wide supply voltage range for versatility

Advantages

• Accurate voltage monitoring ensures reliable system operation
• Adjustable threshold and timeout period provide flexibility in different applications
• Low power consumption helps conserve energy
• Wide supply voltage range allows compatibility with various systems
• Manual reset option adds an extra layer of control and safety

Disadvantages

• Limited to voltage monitoring and reset functionality, not suitable for complex control applications
• Requires external components for threshold and timeout period adjustment
• Not suitable for high-speed or high-frequency applications due to limited response time

Working Principles

The TL7705ACDRG4 operates by continuously monitoring the voltage level at the SENSE pin. When the voltage falls below the threshold set by the TH pin, the internal circuit triggers a reset signal on the RESET pin. The reset signal remains active until the voltage rises above the threshold or the timeout period set by the CT pin elapses.

Detailed Application Field Plans

The TL7705ACDRG4 is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some typical application fields include:

1. Microcontroller-based systems: Ensures proper system initialization and prevents erratic behavior during power-up or brownout conditions.
2. Industrial control systems: Provides supervision and reset capability for critical equipment, preventing damage or data corruption during power fluctuations.
3. Automotive electronics: Monitors battery voltage and initiates a reset if it drops below a safe level, protecting sensitive components and ensuring proper operation.
4. Power supply units: Guards against undervoltage conditions, triggering a reset to protect downstream devices and prevent potential damage.

Detailed and Complete Alternative Models

1. TL7700ACP: Similar voltage supervisor IC with fixed threshold and timeout period.
2. MAX823: Voltage monitor with adjustable threshold and integrated watchdog timer.
3. ADM708: Precision voltage monitor with adjustable threshold and manual reset input.

These alternative models offer similar functionality and can be considered as substitutes for the TL7705ACDRG4 depending on specific requirements and design constraints.

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