TLV803ZDBZT

Product Overview

• Category: Integrated Circuits
• Use: Voltage Supervisor
• Characteristics: Low Power, Reset Output, Adjustable Threshold, Manual Reset Input
• Package: SOT-23-3
• Essence: Monolithic Voltage Supervisor Circuit
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Options: 1.8V, 2.5V, 3V, 3.3V, 5V
• Reset Timeout Period Options: 20ms, 140ms, 560ms, 1120ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TLV803ZDBZT has three pins:

1. GND (Pin 1): Ground connection.
2. MR (Pin 2): Manual reset input. Pulling this pin low resets the device.
3. RESET (Pin 3): Reset output. This pin goes low when the supply voltage drops below the threshold.

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
• Provides an adjustable threshold option to suit different applications.
• Includes a manual reset input for external reset control.
• Offers a reset timeout period option to prevent false resets during power-up or voltage fluctuations.
• Low power consumption makes it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Small package size allows for space-efficient designs.
• Wide supply voltage range enables compatibility with various systems.
• Adjustable threshold and reset timeout options provide flexibility.
• Low power consumption prolongs battery life.
• Manual reset input allows for external control.

Disadvantages

• Limited number of threshold and timeout period options.
• SOT-23-3 package may be challenging to solder for some users.

Working Principles

The TLV803ZDBZT operates by continuously monitoring the supply voltage. When the voltage drops below the set threshold, the reset output is activated, indicating a power failure or an out-of-range condition. The device remains in this state until the voltage rises above the threshold or a manual reset signal is applied.

Detailed Application Field Plans

The TLV803ZDBZT is commonly used in various applications where reliable voltage monitoring and reset generation are crucial. Some typical application fields include:

1. Microcontrollers: Ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.
2. Embedded Systems: Provides a reliable reset signal to ensure stable operation and prevent data corruption.
3. Battery-Powered Devices: Maximizes battery life by efficiently managing power-on and power-off sequences.
4. Industrial Control Systems: Monitors critical voltages to prevent damage to sensitive components and ensure safe operation.

Detailed and Complete Alternative Models

1. TLV809: Similar voltage supervisor with fixed threshold options and different package options.
2. MAX803: Voltage supervisor with adjustable threshold and additional features like watchdog timer and power-on reset delay.
3. ADM6315: Low-power voltage monitor with adjustable threshold and manual reset input.

These alternative models offer similar functionality to the TLV803ZDBZT and can be considered based on specific requirements and preferences.

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