TPS3808G15DRVT

Basic Information Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Precision, Programmable Delay Time
• Package: SOT-23-5
• Essence: Monitors and Resets System Voltage Levels
• Packaging/Quantity: Tape & Reel (3000 pieces per reel)

Specifications

The TPS3808G15DRVT is a voltage supervisor IC designed to monitor and reset system voltage levels. It operates with low power consumption and offers precision monitoring capabilities. The device comes in a compact SOT-23-5 package, making it suitable for space-constrained applications.

Key specifications of the TPS3808G15DRVT include:

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 1.575V, 2.32V, 2.63V, 3.08V, 4.38V, and 4.63V
• Programmable Delay Time: 200ms, 400ms, 600ms, or 1200ms
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS3808G15DRVT features a five-pin configuration as follows:

1. GND: Ground connection.
2. VDD: Positive supply voltage input.
3. MR: Manual Reset input. Pulling this pin low forces a reset.
4. RESET: Open-drain output that asserts low when the monitored voltage falls below the threshold.
5. N/C: No Connection. This pin should be left unconnected.

Functional Features

The TPS3808G15DRVT offers the following functional features:

1. Voltage Monitoring: Monitors the system voltage and asserts a reset signal when it falls below the programmed threshold.
2. Programmable Delay Time: Allows users to set the delay time before asserting the reset signal, providing flexibility in system design.
3. Manual Reset: Provides an option for manual reset by pulling the MR pin low.
4. Open-Drain Output: The RESET pin is an open-drain output, allowing easy interfacing with other devices.

Advantages and Disadvantages

Advantages of using the TPS3808G15DRVT include:

• Low power consumption, making it suitable for battery-powered applications.
• Precision monitoring ensures accurate detection of voltage levels.
• Programmable delay time allows customization based on specific system requirements.
• Compact package size enables usage in space-constrained designs.

Disadvantages of the TPS3808G15DRVT include:

• Limited threshold voltage options may not cover all voltage level monitoring needs.
• Lack of integrated hysteresis circuitry may require additional external components for noise immunity.

Working Principles

The TPS3808G15DRVT operates by continuously monitoring the system voltage through its VDD pin. When the voltage falls below the programmed threshold, the device asserts a reset signal on the RESET pin. The reset signal remains active until the voltage rises above the threshold or a manual reset is triggered by pulling the MR pin low.

The programmable delay time feature allows designers to introduce a delay between the voltage falling below the threshold and the assertion of the reset signal. This delay can be useful in preventing false resets due to temporary voltage fluctuations.

Detailed Application Field Plans

The TPS3808G15DRVT finds application in various fields, including:

1. Battery-Powered Devices: It ensures proper system shutdown when the battery voltage drops below a critical level, preventing data loss or damage.
2. Industrial Control Systems: It provides voltage monitoring and reset functionality in industrial automation systems, ensuring reliable operation.
3. Automotive Electronics: It monitors critical voltage levels in automotive applications, triggering appropriate actions to protect sensitive components.

Detailed and Complete Alternative Models

Alternative models that offer similar functionality to the TPS3808G15DRVT include:

1. MAX809: Voltage Supervisors with Programmable Reset Delay.
2. ADM6315: Precision Voltage Monitors with Manual Reset Option.
3. MCP1316: Low-Power Voltage Detectors with Adjustable Thresholds.

These alternative models provide options for designers based on specific requirements and preferences.

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