TL7757ILPE3

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: 8-pin DIP (Dual In-line Package)
• Essence: Monolithic CMOS IC
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low, Open Drain
• Threshold Voltage Options: Adjustable or Fixed
• Reset Timeout Period: 200ms (typical)

Detailed Pin Configuration

1. GND (Ground)
2. VCC (Supply Voltage)
3. RESET (Active-Low Reset Output)
4. THRESHOLD (Threshold Voltage Input)
5. MR (Manual Reset Input)
6. NC (No Connection)
7. NC (No Connection)
8. NC (No Connection)

Functional Features

• Voltage Monitoring: Monitors the supply voltage and provides a reset signal when it falls below a certain threshold.
• Adjustable Threshold: Allows the user to set the desired threshold voltage using an external resistor divider network.
• Manual Reset: Provides a manual reset input for immediate system reset.
• Power-On Reset Delay: Ensures that the reset output remains active for a specified period after power is applied.

Advantages

• Low Power Consumption: Operates at low power levels, making it suitable for battery-powered applications.
• Precision Monitoring: Provides accurate monitoring of the supply voltage, ensuring reliable system operation.
• Adjustable Threshold: Offers flexibility in setting the threshold voltage to meet specific application requirements.
• Small Package Size: Comes in a compact 8-pin DIP package, saving board space.

Disadvantages

• Limited Reset Timeout Period: The reset output remains active for a fixed period (200ms), which may not be suitable for all applications requiring longer timeout periods.
• No Built-in Hysteresis: Lacks built-in hysteresis, which could lead to potential oscillations or false triggering in noisy environments.

Working Principles

The TL7757ILPE3 is based on a monolithic CMOS IC design. It continuously monitors the supply voltage using an internal voltage reference and comparator circuit. When the supply voltage falls below the threshold set by the THRESHOLD pin, the RESET output is activated, indicating a low-voltage condition. The reset output remains active for the specified timeout period, even if the supply voltage recovers above the threshold during this time.

Detailed Application Field Plans

The TL7757ILPE3 is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some typical application fields include: - Microcontrollers and Microprocessors - Embedded Systems - Power Management Circuits - Industrial Control Systems - Automotive Electronics

Detailed and Complete Alternative Models

1. TL7759ILPE3: Similar to TL7757ILPE3 but with a higher reset timeout period of 400ms.
2. TL7705ACP: Fixed threshold voltage version with a 2.93V threshold.
3. MAX809: Low-power microprocessor reset circuits with adjustable threshold options.

(Note: This list is not exhaustive and other alternative models may exist.)

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