TPS3828-50DBVTG4

Product Overview

Category

The TPS3828-50DBVTG4 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 supervision range: 0.5V to 5.5V
• Low quiescent current: 6µA (typical)
• Precision voltage threshold: ±2%
• Power-on reset delay time: 200ms (typical)
• Manual reset input
• Watchdog timer
• Small package size: SOT-23-6
• RoHS compliant

Package and Quantity

The TPS3828-50DBVTG4 is available in a small SOT-23-6 package. It is typically sold in reels containing a quantity of 3000 units.

Specifications

• Supply voltage range: 0.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Power-on reset threshold accuracy: ±2%
• Watchdog timeout period: 1.6s (typical)
• Manual reset input threshold voltage: 0.3V (typical)
• Quiescent current: 6µA (typical)

Pin Configuration

The TPS3828-50DBVTG4 has the following pin configuration:

```

---

| | --| VDD | --| GND | --| MR | --| RESET | --| WDI | |___________| ```

• VDD: Supply voltage input
• GND: Ground reference
• MR: Manual reset input
• RESET: Reset output
• WDI: Watchdog input

Functional Features

1. Voltage Supervision: The TPS3828-50DBVTG4 continuously monitors the supply voltage and asserts the reset output 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 Input: The MR pin allows an external signal to assert a reset condition, overriding the internal voltage monitoring.
4. Watchdog Timer: The integrated watchdog timer requires periodic input pulses to prevent system lock-up. If the pulses are not received within the specified timeout period, the reset output is asserted.
5. Low Quiescent Current: The device operates with a low quiescent current of 6µA, minimizing power consumption.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Precision voltage threshold ensures accurate voltage monitoring.
• Small package size enables space-saving designs.
• Low quiescent current reduces power consumption.
• Manual reset input provides flexibility in system control.

Disadvantages

• Watchdog timeout period may not be suitable for all applications.
• Limited number of alternative models available in the market.

Working Principles

The TPS3828-50DBVTG4 works by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the specified threshold, the reset output is asserted, indicating a voltage fault condition. The power-on reset delay ensures that the reset output remains stable during system initialization. The manual reset input allows an external signal to override the internal voltage monitoring and assert a reset condition. The integrated watchdog timer requires periodic input pulses to prevent system lock-up. If the pulses are not received within the specified timeout period, the reset output is asserted.

Application Field Plans

The TPS3828-50DBVTG4 finds applications in various electronic systems where voltage monitoring and supervision are critical. Some potential application fields include:

1. Microcontrollers: Ensuring proper reset functionality during power-up and voltage fluctuations.
2. Embedded Systems: Monitoring supply voltage to prevent data corruption or system malfunction.
3. Industrial Control Systems: Providing reliable reset signals for critical control circuits.
4. Automotive Electronics: Safeguarding sensitive components from voltage variations.
5. Telecommunications Equipment: Maintaining stable operation by monitoring power supply integrity.

Alternative Models

While the TPS3828-50DBVTG4 is a popular choice, there are alternative models available in the market that offer similar functionality. Some notable alternatives include:

1. TPS3839-33DBVR
2. MAX809T
3. ADM6315
4. MCP130

These alternative models provide comparable voltage supervision capabilities and can be considered based on specific application requirements.

In conclusion, the TPS3828-50DBVTG4 is a voltage supervisor with precise voltage threshold monitoring, low quiescent current, and various functional features. It finds applications in diverse fields such as microcontrollers, embedded