TPS3780ADBVR

Product Overview

Category

The TPS3780ADBVR belongs to the category of integrated circuits (ICs) and specifically falls under the voltage supervisors or monitors.

Use

This product is primarily used for monitoring the voltage levels in electronic systems, ensuring that they remain within specified limits. It provides a reliable means of detecting undervoltage and overvoltage conditions, thereby preventing potential damage to sensitive components.

Characteristics

• Voltage monitoring range: The TPS3780ADBVR can monitor voltages ranging from 1.2V to 5.5V.
• Low quiescent current: It consumes minimal power during operation, making it suitable for battery-powered applications.
• Adjustable threshold levels: The device allows users to set the desired voltage thresholds for triggering alerts or actions.
• Reset delay options: It offers adjustable reset delay times to accommodate different system requirements.
• Small package size: The TPS3780ADBVR is available in a small SOT-23 package, enabling space-efficient designs.

Package and Quantity

The TPS3780ADBVR is packaged in a SOT-23-5 package, which consists of five pins. It is typically sold in reels containing a quantity of 3000 units per reel.

Specifications

• Supply voltage range: 1.2V to 5.5V
• Operating temperature range: -40°C to +125°C
• Quiescent current: 3.5µA (typical)
• Threshold accuracy: ±1.5%
• Reset timeout period: Adjustable from 1ms to 10s

Pin Configuration

The TPS3780ADBVR has the following pin configuration:

```

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| | --| VDD | --| GND | --| RESET | --| TH | --| TL | |_______| ```

• VDD: Power supply input
• GND: Ground reference
• RESET: Output pin for reset signal
• TH: Threshold voltage high input
• TL: Threshold voltage low input

Functional Features

1. Voltage Monitoring: The TPS3780ADBVR continuously monitors the input voltage and compares it with the user-defined threshold levels.
2. Reset Signal Generation: When the voltage exceeds or falls below the set thresholds, the device generates a reset signal to indicate the fault condition.
3. Adjustable Thresholds: Users can configure the threshold voltages using external resistors, allowing flexibility in system design.
4. Reset Delay: The device offers adjustable reset delay times to ensure stability during power-up or transient voltage fluctuations.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various electronic systems.
• Low quiescent current consumption prolongs battery life in portable applications.
• Adjustable threshold levels provide customization options.
• Small package size allows for compact designs.

Disadvantages

• Lack of built-in hysteresis may require additional external components for noise immunity.
• Limited number of pins restricts the number of features that can be integrated into the device.

Working Principles

The TPS3780ADBVR operates by comparing the input voltage with the user-defined threshold levels. If the voltage exceeds the high threshold or falls below the low threshold, the device generates a reset signal. This signal can be used to trigger actions such as system shutdown or fault indication.

The reset delay feature ensures that the reset signal remains active for a specified period, preventing false triggering due to transient voltage fluctuations. The device continuously monitors the voltage, providing reliable protection for sensitive electronic components.

Application Field Plans

The TPS3780ADBVR finds applications in various fields where voltage monitoring is critical. Some potential application areas include:

1. Power Supply Units: The device can be used in power supply units to monitor the input voltage and protect downstream components from overvoltage or undervoltage conditions.
2. Battery-Powered Systems: It is suitable for battery-powered devices, such as portable electronics, where efficient power management and voltage monitoring are essential.
3. Industrial Control Systems: The TPS3780ADBVR can be employed in industrial control systems to ensure stable voltage levels and prevent damage to sensitive equipment.
4. Automotive Electronics: It finds use in automotive applications, providing voltage monitoring for critical systems like engine control units and safety modules.

Alternative Models

1. TPS3700: This IC offers similar voltage monitoring capabilities but with a different pin configuration and package size.
2. MAX823: A voltage supervisor IC from Maxim Integrated, offering comparable features and performance.
3. ADM1176: An alternative voltage supervisor IC from Analog Devices, providing additional diagnostic features.

These alternative models can be considered based on specific application requirements and compatibility with existing designs.

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