TPS3128E15DBVR

Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the voltage level of a system - Generates a reset signal when the voltage falls below a specified threshold - Prevents erratic behavior or data corruption in electronic systems

Package: SOT-23-5

Essence: The TPS3128E15DBVR is a voltage supervisor IC that ensures stable operation of electronic systems by monitoring the voltage level and generating a reset signal when necessary.

Packaging/Quantity: The TPS3128E15DBVR is available in a SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.2V to 6V
• Threshold Voltage: 1.5V
• Reset Timeout Period: 200ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Output Type: Active Low

Pin Configuration

The TPS3128E15DBVR has five pins arranged as follows:

```

---

| | --| |-- |____| ```

Pin 1: GND (Ground)

Pin 2: MR (Manual Reset)

Pin 3: VDD (Supply Voltage)

Pin 4: RESET (Reset Output)

Pin 5: TH (Threshold Voltage)

Functional Features

1. Voltage Monitoring: The TPS3128E15DBVR continuously monitors the supply voltage of the system.

2. Reset Generation: When the voltage falls below the threshold voltage, the IC generates a reset signal to ensure a controlled restart of the system.

3. Manual Reset: The MR pin allows for manual reset capability, enabling the system to be reset externally.

4. Adjustable Threshold: The threshold voltage can be adjusted using an external resistor divider network, providing flexibility in setting the desired voltage level for reset generation.

Advantages

• Compact and space-saving SOT-23-5 package
• Low quiescent current consumption, minimizing power consumption in battery-powered applications
• Adjustable threshold voltage allows customization for different system requirements
• Manual reset capability provides additional control over system reset operations

Disadvantages

• Limited supply voltage range (1.2V to 6V)
• Fixed reset timeout period (200ms) may not be suitable for all applications

Working Principles

The TPS3128E15DBVR operates by comparing the supply voltage with the threshold voltage set by the TH pin. When the supply voltage falls below the threshold voltage, the IC generates a reset signal on the RESET pin. This reset signal can be used to initiate a controlled restart of the system, preventing erratic behavior or data corruption.

Application Field Plans

The TPS3128E15DBVR is commonly used in various electronic systems where stable operation is critical. Some potential application fields include:

1. Microcontrollers: Ensuring reliable startup and operation of microcontroller-based systems.
2. Embedded Systems: Providing voltage supervision for embedded systems to prevent data loss or corruption.
3. Industrial Control Systems: Monitoring and resetting critical components in industrial control systems to maintain system integrity.
4. Automotive Electronics: Safeguarding automotive electronics against voltage fluctuations and ensuring proper system initialization.

Alternative Models

1. TPS3125: Similar voltage supervisor IC with adjustable threshold voltage and a wider supply voltage range (0.8V to 10V).
2. MAX823: Voltage monitor IC with adjustable threshold voltage and a push-pull output configuration.
3. ADM6315: Microprocessor supervisory circuit with adjustable threshold voltage and a watchdog timer feature.

These alternative models offer similar functionality to the TPS3128E15DBVR and can be considered based on specific application requirements.

Word count: 547 words