TPS2104DBVT

Product Overview

Category

The TPS2104DBVT belongs to the category of integrated circuits (ICs) and specifically falls under the voltage supervisors or voltage monitors category.

Use

This product is primarily used for monitoring and supervising voltage levels in electronic systems. It ensures that the voltage remains within a specified range, triggering appropriate actions if the voltage exceeds or falls below the set threshold.

Characteristics

• Voltage monitoring: The TPS2104DBVT can monitor voltages in the range of 0.8V to 5.5V.
• Adjustable threshold: The voltage threshold can be set using external resistors, allowing flexibility in different applications.
• Low power consumption: This IC has low quiescent current, making it suitable for battery-powered devices.
• Wide operating temperature range: The TPS2104DBVT can operate in temperatures ranging from -40°C to 125°C.

Package and Quantity

The TPS2104DBVT is available in a small SOT-23 package. It is typically sold in reels containing a quantity of 3000 units per reel.

Specifications

• Supply voltage range: 1.2V to 6.5V
• Threshold voltage accuracy: ±1.5%
• Quiescent current: 10µA (typical)
• Power-on reset delay time: 200ms (typical)
• Output type: Active-low, open-drain

Pin Configuration

The TPS2104DBVT has a total of three pins:

1. GND: Ground pin, connected to the system ground.
2. VDD: Supply voltage pin, connected to the positive supply voltage.
3. RESET: Output pin that indicates the status of the monitored voltage. It is an active-low, open-drain output.

Functional Features

• Undervoltage detection: The TPS2104DBVT can detect when the voltage falls below a set threshold, triggering the RESET pin to go low.
• Overvoltage detection: Similarly, it can detect when the voltage exceeds the set threshold, causing the RESET pin to go low.
• Power-on reset: The IC provides a power-on reset signal that remains active for a specific delay time after the supply voltage reaches the threshold level.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems.
• Adjustable threshold enables customization for different applications.
• Low power consumption makes it suitable for battery-powered devices.
• Small package size saves board space.

Disadvantages

• Lack of built-in hysteresis may lead to potential oscillations near the threshold voltage.
• Limited output drive capability restricts its use in high-current applications.

Working Principles

The TPS2104DBVT operates by comparing the monitored voltage with a reference voltage internally generated. When the monitored voltage falls below or exceeds the set threshold, the IC triggers the RESET pin accordingly. This functionality ensures proper system operation within the desired voltage range.

Application Field Plans

The TPS2104DBVT finds applications in various electronic systems where voltage monitoring is critical. Some potential application fields include:

1. Battery-powered devices: Ensuring safe operation and preventing damage due to undervoltage conditions.
2. Industrial control systems: Monitoring voltage levels in critical components to prevent malfunctions or failures.
3. Automotive electronics: Protecting sensitive electronic components from overvoltage events.
4. Telecommunications equipment: Maintaining stable voltage levels to ensure reliable communication.

Alternative Models

For those seeking alternative options, the following models provide similar functionality to the TPS2104DBVT:

1. TPS2101DBVR
2. TPS2102DBVT
3. TPS2103DBVR

These models offer comparable voltage monitoring capabilities and package options, providing flexibility in choosing the most suitable solution for specific applications.

In conclusion, the TPS2104DBVT is an integrated circuit used for voltage monitoring in electronic systems. Its adjustable threshold, low power consumption, and wide operating temperature range make it a versatile choice for various applications. However, potential drawbacks include the lack of built-in hysteresis and limited output drive capability. Nonetheless, its working principles and application field plans demonstrate its usefulness in ensuring stable voltage levels and protecting sensitive components.