TPS3837E18DBVTG4

Product Overview

Category

The TPS3837E18DBVTG4 belongs to the category of voltage supervisors.

Use

This product is primarily used for monitoring and supervising the voltage levels in electronic systems.

Characteristics

• Voltage threshold: 1.8V
• Accuracy: ±1%
• Low quiescent current: 1.5µA (typical)
• Wide operating temperature range: -40°C to +125°C
• Power-on reset delay time: 200ms (typical)

Package

The TPS3837E18DBVTG4 comes in a small SOT-23-5 package, which is suitable for space-constrained applications.

Essence

The essence of the TPS3837E18DBVTG4 is its ability to provide accurate voltage monitoring and reset generation in various electronic systems.

Packaging/Quantity

This product is typically available in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Supply voltage range: 1.6V to 6.5V
• Reset threshold options: 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
• Open-drain output
• Low supply current: 1.5µA (typical)
• Power-on reset delay time: 200ms (typical)
• Operating temperature range: -40°C to +125°C

Detailed Pin Configuration

The TPS3837E18DBVTG4 has the following pin configuration:

```

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| | --| VDD | --| GND | --| RESET | --| MR | --| N/C | |_______| ```

• VDD: Supply voltage input
• GND: Ground reference
• RESET: Open-drain reset output
• MR: Manual reset input
• N/C: No connection

Functional Features

1. Voltage Monitoring: The TPS3837E18DBVTG4 continuously monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
2. Power-On Reset: Upon power-up, the device ensures a stable reset output for a defined delay time to allow the system to initialize properly.
3. Manual Reset: The manual reset input (MR) allows external control over the reset function, enabling system reset without relying solely on the monitored voltage level.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring with ±1% accuracy
• Low quiescent current consumption
• Wide operating temperature range for versatile applications
• Small package size suitable for space-constrained designs
• Manual reset capability for enhanced control

Disadvantages

• Limited reset threshold options available
• Open-drain output may require additional circuitry for certain applications

Working Principles

The TPS3837E18DBVTG4 operates by comparing the supply voltage against the preset threshold. When the voltage drops below the threshold, the reset output is activated, indicating a low-voltage condition. The power-on reset delay ensures that the reset output remains active for a defined period after power-up, allowing the system to stabilize before normal operation resumes. The manual reset input provides an additional means of triggering a system reset, independent of the monitored voltage level.

Detailed Application Field Plans

The TPS3837E18DBVTG4 finds applications in various electronic systems where accurate voltage monitoring and reset generation are critical. Some potential application fields include:

1. Microcontrollers: Ensuring proper initialization and reliable operation of microcontroller-based systems.
2. Industrial Control Systems: Monitoring power supply voltages in industrial automation and control systems to prevent malfunctions.
3. Battery-Powered Devices: Protecting battery-powered devices from undervoltage conditions, preventing damage to sensitive components.
4. Automotive Electronics: Providing voltage supervision in automotive applications, such as engine control units and infotainment systems.

Detailed and Complete Alternative Models

1. TPS3837E25DBVTG4: Similar to TPS3837E18DBVTG4 but with a 2.5V reset threshold.
2. TPS3837E30DBVTG4: Similar to TPS3837E18DBVTG4 but with a 3.0V reset threshold.
3. TPS3837E33DBVTG4: Similar to TPS3837E18DBVTG4 but with a 3.3V reset threshold.
4. TPS3837E50DBVTG4: Similar to TPS3837E18DBVTG4 but with a 5.0V reset threshold.

These alternative models provide flexibility in choosing the appropriate reset threshold for specific system requirements.

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