TPS3619-33DGK

Product Overview

Category

The TPS3619-33DGK belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and controlling the voltage levels in electronic circuits.

Characteristics

• Voltage supervision: The TPS3619-33DGK ensures that the voltage remains within a specified range.
• Reset function: It provides a reset signal when the voltage falls below a predetermined threshold.
• Low power consumption: The device operates with low power consumption, making it suitable for battery-powered applications.
• Wide operating temperature range: It can operate reliably across a wide temperature range.
• Small package size: The TPS3619-33DGK comes in a compact package, saving space on the circuit board.

Package and Quantity

The TPS3619-33DGK is available in a small SOT-23 package. It is typically sold in reels containing a specific quantity, such as 3000 units per reel.

Specifications

• Input voltage range: 2.5V to 6.5V
• Output voltage: 3.3V
• Operating temperature range: -40°C to +85°C
• Quiescent current: 10µA (typical)
• Power-on reset time: 20ms (typical)

Pin Configuration

The TPS3619-33DGK has the following pin configuration:

1. GND (Ground)
2. VDD (Power supply input)
3. MR (Manual reset input)
4. RESET (Reset output)

Functional Features

1. Voltage Monitoring: The TPS3619-33DGK continuously monitors the input voltage to ensure it remains within the desired range.
2. Reset Signal Generation: When the input voltage falls below the threshold, the device generates a reset signal to initiate a system reset.
3. Manual Reset: The MR pin allows for manual reset control, enabling the user to manually trigger a system reset.
4. Power-On Reset Delay: The TPS3619-33DGK incorporates a power-on reset delay to ensure stable operation during power-up.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring ensures reliable system operation.
• Low power consumption extends battery life in portable applications.
• Small package size saves space on the circuit board.
• Wide operating temperature range enables usage in various environments.

Disadvantages

• Limited output voltage options (only 3.3V in this case).
• Lack of adjustable threshold voltage limits customization options.

Working Principles

The TPS3619-33DGK operates by comparing the input voltage with an internal reference voltage. If the input voltage falls below the specified threshold, the device generates a reset signal. This signal remains active until the input voltage rises above the threshold again. The manual reset feature allows the user to override the automatic reset function.

Application Field Plans

The TPS3619-33DGK finds application in various electronic systems where voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Microcontrollers: Ensuring stable operation by monitoring the supply voltage and initiating a reset if necessary.
2. Battery-Powered Devices: Extending battery life by efficiently managing power consumption and providing reset functionality.
3. Industrial Control Systems: Monitoring critical voltages in control systems to prevent malfunctions or damage.
4. Automotive Electronics: Safeguarding sensitive electronic components from voltage fluctuations and initiating resets when required.

Alternative Models

Several alternative models offer similar functionality to the TPS3619-33DGK. Some notable alternatives include:

1. MAX823: Voltage supervisor with adjustable threshold voltage and various output options.
2. ADM6315: Microprocessor supervisory circuit with a watchdog timer and adjustable reset timeout.
3. MCP101: Low-power voltage supervisor with a wide input voltage range and adjustable reset threshold.

These alternative models provide flexibility in terms of voltage thresholds, output options, and additional features, allowing users to choose the most suitable option for their specific application requirements.

In conclusion, the TPS3619-33DGK is a voltage supervisor that offers accurate voltage monitoring, reset functionality, low power consumption, and a compact package size. It finds applications in various electronic systems, ensuring stable operation and protecting sensitive components from voltage fluctuations. While it has some limitations, alternative models provide customization options to meet specific needs.