TPS389030QDSERQ1

Product Overview

Category

The TPS389030QDSERQ1 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 and supervising voltage levels in electronic systems. It ensures that the voltage remains within a specified range, triggering appropriate actions when it goes beyond the set limits.

Characteristics

• Voltage monitoring: The TPS389030QDSERQ1 can monitor voltages in the range of 0.4V to 5.5V.
• Low power consumption: It operates with low quiescent current, making it suitable for battery-powered applications.
• Wide temperature range: The device can function reliably across a wide temperature range, from -40°C to 125°C.
• Adjustable threshold: The voltage threshold for triggering an alert or action can be adjusted using external resistors.
• Reset output options: The TPS389030QDSERQ1 provides both active-low and active-high reset outputs.

Package and Quantity

The TPS389030QDSERQ1 is available in a small surface-mount package, such as a 6-pin SOT-23. It is typically sold in reels containing a specific quantity, usually around 3000 units per reel.

Specifications

• Supply voltage range: 0.4V to 5.5V
• Quiescent current: 2.5µA (typical)
• Threshold accuracy: ±0.8%
• Reset timeout period: 200ms (typical)
• Operating temperature range: -40°C to 125°C

Pin Configuration

The TPS389030QDSERQ1 has six pins arranged as follows:

```

---

| | --| VDD |-- --| GND |-- --| MR |-- --| RESET |-- --| VIT |-- |_______| ```

1. VDD: Power supply input
2. GND: Ground reference
3. MR: Manual reset input (active-low)
4. RESET: Reset output (active-low or active-high, depending on configuration)
5. VIT: Voltage input for monitoring
6. NC: No connection (unused pin)

Functional Features

• Undervoltage detection: The TPS389030QDSERQ1 can detect when the monitored voltage falls below a specified threshold.
• Reset generation: Upon detecting an undervoltage condition, the device generates a reset signal to initiate appropriate actions in the system.
• Adjustable threshold: The voltage threshold for triggering a reset can be adjusted using external resistors.
• Manual reset option: The MR pin allows for manual resetting of the device, overriding the automatic reset generation.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various electronic systems.
• Low power consumption makes it suitable for battery-powered applications.
• Adjustable threshold allows flexibility in voltage monitoring.
• Small package size facilitates space-constrained designs.

Disadvantages

• Limited to voltage monitoring and reset generation, may not suit all system monitoring requirements.
• Requires external resistors for threshold adjustment, adding complexity to the design.

Working Principles

The TPS389030QDSERQ1 operates by continuously monitoring the voltage applied to the VIT pin. It compares this voltage against a preset threshold level. If the voltage falls below the threshold, indicating an undervoltage condition, the device generates a reset signal. This reset signal can be used to trigger appropriate actions, such as restarting the system or initiating a safe shutdown.

The threshold level can be adjusted by connecting external resistors to the device's threshold adjustment pins. This allows customization of the voltage range for triggering a reset.

Application Field Plans

The TPS389030QDSERQ1 finds applications in various electronic systems where voltage monitoring and reset generation are critical. Some potential application fields include:

1. Battery-powered devices: Ensuring proper operation and preventing damage due to undervoltage conditions.
2. Automotive electronics: Monitoring voltage levels in vehicle systems to prevent malfunctions or accidents.
3. Industrial control systems: Providing reliable voltage supervision in industrial automation and control applications.
4. Medical equipment: Safeguarding critical medical devices by monitoring voltage levels and initiating appropriate actions when necessary.

Alternative Models

For those seeking alternative options, the following integrated circuits can be considered as alternatives to the TPS389030QDSERQ1:

1. MAX823: Voltage monitor with adjustable threshold and manual reset option.
2. LTC2910: Precision voltage supervisor with programmable threshold and wide operating temperature range.
3. ADM6315: Microprocessor supervisory circuit with adjustable threshold and watchdog timer functionality.

These alternative models offer similar features and functionalities, providing flexibility in choosing the most suitable voltage supervisor for specific applications