TPS3820-33DBVR

Product Overview

Category

The TPS3820-33DBVR belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and supervising the voltage levels in electronic systems.

Characteristics

• Low-power consumption
• Wide operating voltage range
• High accuracy
• Small package size
• Reset timeout delay feature

Package

The TPS3820-33DBVR is available in a small SOT-23 package.

Essence

The essence of the TPS3820-33DBVR lies in its ability to provide accurate voltage monitoring and reset generation in electronic systems.

Packaging/Quantity

The TPS3820-33DBVR is typically sold in reels, with each reel containing a specific quantity of devices. The exact quantity may vary depending on the manufacturer.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Reset Threshold Voltage: 3.08V
• Reset Timeout Delay: Adjustable (typically 200ms)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

The TPS3820-33DBVR has the following pin configuration:

```

---

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

• VDD: Power supply input
• GND: Ground reference
• MR: Manual reset input
• RESET: Reset output

Functional Features

1. Voltage Monitoring: The TPS3820-33DBVR continuously monitors the input voltage and compares it with the preset threshold voltage.
2. Reset Generation: If the monitored voltage falls below the threshold, the TPS3820-33DBVR generates a reset signal to initiate system recovery.
3. Reset Timeout Delay: The device includes an adjustable reset timeout delay, allowing for customization based on specific system requirements.
4. Manual Reset: The MR pin provides the option for manual reset initiation.

Advantages and Disadvantages

Advantages

• Low-power consumption ensures minimal impact on overall system energy efficiency.
• Wide operating voltage range makes it compatible with various electronic systems.
• High accuracy in voltage monitoring enhances system reliability.
• Small package size enables space-saving integration into compact designs.
• Reset timeout delay feature allows flexibility in system recovery timing.

Disadvantages

• Lack of built-in protection features against voltage spikes or transients.
• Limited availability of alternative models from different manufacturers.

Working Principles

The TPS3820-33DBVR operates by continuously monitoring the input voltage using an internal voltage reference. When the monitored voltage falls below the preset threshold, the device triggers a reset signal. The reset timeout delay ensures that the reset signal remains active for a specific duration, allowing the system to recover before resuming normal operation.

Detailed Application Field Plans

The TPS3820-33DBVR finds applications in various electronic systems where voltage monitoring and reliable reset generation are crucial. Some potential application fields include:

1. Microcontrollers: Ensuring proper system initialization and recovery in microcontroller-based systems.
2. Industrial Control Systems: Monitoring power supply voltages in industrial control systems to prevent malfunctions and ensure safe operation.
3. Automotive Electronics: Providing voltage supervision in automotive electronics to enhance system reliability and prevent damage due to voltage fluctuations.
4. Battery-Powered Devices: Monitoring battery voltage levels in portable devices to optimize power management and prevent unexpected shutdowns.

Detailed and Complete Alternative Models

While the TPS3820-33DBVR is a popular choice for voltage supervision, there are alternative models available from different manufacturers. Some notable alternatives include:

1. MAX823: Manufactured by Maxim Integrated, the MAX823 offers similar voltage monitoring and reset generation capabilities.
2. ADM6315: Produced by Analog Devices, the ADM6315 provides accurate voltage supervision with adjustable reset timeout delay.
3. MCP130: Microchip's MCP130 series offers a range of voltage supervisors with various features and package options.

These alternative models provide similar functionality to the TPS3820-33DBVR and can be considered based on specific application requirements.

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