TPS3808G12DRVTG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

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

Package: SOT-23-6

Essence: The TPS3808G12DRVTG4 is a voltage supervisor IC that monitors the power supply voltage of electronic systems. It ensures proper system operation by generating a reset signal when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3808G12DRVTG4 is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V, 4.63V, 4.88V, 5.13V, 5.38V
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Open Drain
• Reset Timeout Period: 200ms (typical)

Pin Configuration

The TPS3808G12DRVTG4 has a total of six pins arranged as follows:

____ VDD| |GND RST| |N/C GND| |MR N/C| |VDD |____|

• VDD: Power supply input
• GND: Ground reference
• RST: Reset output
• MR: Manual reset input
• N/C: No connection

Functional Features

1. Voltage Monitoring: The TPS3808G12DRVTG4 continuously monitors the supply voltage and asserts the reset output when it falls below the programmed threshold.
2. Adjustable Threshold Voltage: The device offers multiple threshold voltage options, allowing flexibility in system design.
3. Manual Reset Input: The MR pin provides a means to manually assert a reset signal, overriding the voltage monitoring function.
4. Open Drain Output: The reset output is an open drain, which allows for easy interfacing with other devices.
5. Low Power Consumption: With a quiescent current of only 1.5µA, the TPS3808G12DRVTG4 minimizes power consumption.

Advantages and Disadvantages

Advantages: - Wide supply voltage range enables compatibility with various systems. - Adjustable threshold voltage provides flexibility in voltage monitoring. - Small package size (SOT-23-6) saves board space. - Low power consumption helps prolong battery life. - Open drain output facilitates easy integration with other components.

Disadvantages: - Limited number of threshold voltage options available. - Lack of built-in hysteresis may lead to potential oscillations near the threshold voltage.

Working Principles

The TPS3808G12DRVTG4 operates by comparing the supply voltage against the programmed threshold voltage. When the supply voltage drops below the threshold, the reset output is asserted, indicating a power failure or low voltage condition. The reset output remains active until the supply voltage rises above the threshold and a timeout period elapses.

Detailed Application Field Plans

The TPS3808G12DRVTG4 finds applications in various electronic systems where reliable voltage monitoring is crucial. Some potential application fields include:

1. Microcontrollers: Ensuring proper operation and preventing data corruption during power fluctuations.
2. Industrial Control Systems: Monitoring power supply integrity in critical control systems.
3. Automotive Electronics: Protecting sensitive components from voltage drops and ensuring safe operation.
4. Battery-Powered Devices: Preventing excessive discharge and preserving battery life.

Detailed and Complete Alternative Models

1. TPS3808G01: Fixed threshold voltage supervisor with similar features.
2. TPS3808G33: Voltage supervisor with a higher threshold voltage range.
3. TPS3808G25: Voltage supervisor with a lower threshold voltage range.
4. TPS3808G15: Voltage supervisor with an intermediate threshold voltage option.

These alternative models offer different threshold voltage options and may better suit specific system requirements.

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