TLV809I50DBVR

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Operating Voltage Range - Adjustable Reset Threshold - Open Drain Output - Small Package Size

Package: SOT-23-5

Essence: TLV809I50DBVR is a voltage supervisor IC that monitors the power supply voltage and provides a reset signal to the microcontroller or other digital devices when the voltage drops below a certain threshold.

Packaging/Quantity: TLV809I50DBVR is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.0V to 10.0V
• Reset Threshold Voltage: Adjustable from 1.2V to 5.0V
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Open Drain
• Output Active Low
• Power-On Reset Delay Time: 200ms (typical)

Pin Configuration

TLV809I50DBVR has a SOT-23-5 package with the following pin configuration:

```

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| | --| RST|-- --| GND|-- --| VDD|-- --| MR |-- |____| ```

Pin Description: - RST: Reset Output - GND: Ground - VDD: Supply Voltage - MR: Manual Reset Input

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the set threshold.
• The reset output is an open drain, allowing for flexibility in connecting to different microcontrollers or digital devices.
• The reset threshold voltage can be adjusted using an external resistor divider network.
• Provides a manual reset input for immediate system reset.

Advantages and Disadvantages

Advantages: - Low power consumption, suitable for battery-powered applications. - Wide operating voltage range allows for compatibility with various supply voltages. - Adjustable reset threshold provides flexibility in different voltage monitoring scenarios. - Small package size enables space-saving designs.

Disadvantages: - The open drain output requires an external pull-up resistor for proper operation. - Limited number of pins may restrict the integration of additional features.

Working Principles

TLV809I50DBVR operates by comparing the supply voltage with the set threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a power failure or low voltage condition. The reset output remains active until the supply voltage rises above the threshold again.

The manual reset input allows for an immediate system reset, overriding the voltage monitoring function. This can be useful during system testing or when a controlled reset is required.

Detailed Application Field Plans

TLV809I50DBVR finds applications in various fields where reliable voltage monitoring and reset functionality are essential. Some examples include:

1. Microcontroller Systems: TLV809I50DBVR ensures proper system initialization and prevents erratic behavior due to insufficient power supply voltage.

2. Industrial Control Systems: Voltage supervision is critical in industrial control systems to ensure safe and reliable operation. TLV809I50DBVR provides an effective solution for monitoring power supply voltage.

3. Automotive Electronics: In automotive applications, TLV809I50DBVR helps protect sensitive electronic components from voltage fluctuations and ensures proper functioning of critical systems.

4. Battery-Powered Devices: TLV809I50DBVR's low power consumption makes it suitable for battery-powered devices such as portable medical equipment, IoT devices, and wearable devices.

Detailed and Complete Alternative Models

Some alternative models to TLV809I50DBVR that offer similar functionality include:

1. MAX809: Voltage Supervisors with Adjustable Reset Threshold and Open Drain Output.
2. TPS3808: Programmable Voltage Supervisors with Manual Reset Input and Adjustable Reset Threshold.
3. ADM811: Microprocessor Supervisory Circuits with Adjustable Reset Threshold and Active-Low Reset Output.

These alternative models provide options for different voltage ranges, package sizes, and additional features, allowing designers to choose the most suitable solution for their specific requirements.

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