TPS3824-33DBVT

Product Overview

Category

The TPS3824-33DBVT belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage threshold: 3.3V
• Low quiescent current: 10µA (typical)
• Wide operating temperature range: -40°C to +125°C
• Adjustable power-on reset delay time
• Open-drain output
• Small package size: SOT-23-5

Package and Quantity

The TPS3824-33DBVT is available in a small SOT-23-5 package. It is typically sold in reels of 3000 units.

Specifications

• Supply voltage range: 1.6V to 6V
• Reset threshold accuracy: ±2%
• Power-on reset delay time options: 100ms, 200ms, 400ms, or 800ms
• Operating current: 10µA (typical)
• Output type: Open-drain
• Maximum output sink current: 10mA

Pin Configuration

The TPS3824-33DBVT has five pins arranged as follows:

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Pin 1: GND (Ground) Pin 2: MR (Manual Reset) Pin 3: VDD (Supply Voltage) Pin 4: RESET (Reset Output) Pin 5: NC (No Connection)

Functional Features

• Power-on reset generation
• Monitoring of supply voltage
• Manual reset input
• Open-drain reset output
• Adjustable reset delay time

Advantages and Disadvantages

Advantages

• Low quiescent current consumption
• Wide operating temperature range
• Adjustable power-on reset delay time
• Small package size for space-constrained applications

Disadvantages

• Limited maximum output sink current (10mA)
• No internal pull-up resistor on the reset output pin

Working Principles

The TPS3824-33DBVT operates by continuously monitoring the supply voltage. When the voltage drops below the preset threshold of 3.3V, the device generates a reset signal on the RESET pin. The reset signal remains active until the supply voltage rises above the threshold and the reset delay time elapses.

Detailed Application Field Plans

The TPS3824-33DBVT is commonly used in various electronic systems where reliable voltage monitoring is crucial. Some typical application fields include:

1. Microcontrollers: Ensuring proper reset and initialization during power-up.
2. Communication Systems: Monitoring power supply stability to prevent data corruption.
3. Industrial Control Systems: Providing reliable reset functionality for critical control units.
4. Automotive Electronics: Ensuring safe operation by monitoring supply voltage levels.
5. Battery-Powered Devices: Preventing damage due to undervoltage conditions.

Detailed Alternative Models

1. TPS3820-33DBVR: Similar specifications but with a fixed 3.3V threshold.
2. TPS3839K33DBVR: Higher accuracy with ±1% threshold accuracy.
3. MAX823LEUK+: Adjustable reset delay time with a higher operating voltage range.

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

In conclusion, the TPS3824-33DBVT is a voltage supervisor that provides reliable monitoring and reset functionality for electronic systems. Its low quiescent current, wide operating temperature range, and adjustable reset delay time make it suitable for various applications. However, its limited maximum output sink current and lack of an internal pull-up resistor should be taken into consideration.