TPS3106K33DBVR

Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the voltage level of a power supply - Generates a reset signal when the voltage falls below a specified threshold - Prevents system malfunction due to low voltage conditions

Package: SOT-23-5

Essence: The TPS3106K33DBVR is a voltage supervisor IC that ensures proper functioning of electronic systems by monitoring the power supply voltage and generating a reset signal when it drops below a predetermined threshold.

Packaging/Quantity: The TPS3106K33DBVR is available in a SOT-23-5 package. It is typically sold in reels or tubes, with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.8V to 6V
• Threshold Voltage: 3.3V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS3106K33DBVR has five pins arranged as follows:

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Pin 1: GND (Ground)

Pin 2: VDD (Supply Voltage)

Pin 3: MR (Manual Reset Input)

Pin 4: RESET (Reset Output)

Pin 5: TH (Threshold Voltage Setting)

Functional Features

1. Voltage Monitoring: The TPS3106K33DBVR continuously monitors the supply voltage and compares it with the threshold voltage.
2. Reset Signal Generation: When the supply voltage drops below the threshold voltage, the TPS3106K33DBVR generates a reset signal to indicate a low voltage condition.
3. Adjustable Timeout Period: The reset timeout period can be adjusted using an external capacitor, allowing flexibility in system response time.
4. Manual Reset Input: The MR pin allows for manual resetting of the device, overriding the automatic reset function.

Advantages and Disadvantages

Advantages: - Compact SOT-23-5 package enables space-saving designs - Wide supply voltage range accommodates various applications - Low quiescent current minimizes power consumption - Adjustable reset timeout period provides flexibility

Disadvantages: - Limited threshold voltage options (only 3.3V available) - Manual reset input may require additional circuitry for implementation

Working Principles

The TPS3106K33DBVR 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 internal comparator triggers the generation of a reset signal on the RESET pin. This reset signal can be used to initiate system recovery or perform other necessary actions.

The reset timeout period determines how long the reset signal remains active after the supply voltage returns to normal. This timeout period can be adjusted using an external capacitor connected to the TH pin.

Detailed Application Field Plans

The TPS3106K33DBVR is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are critical. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper operation and prevents data corruption during power supply fluctuations.
2. Embedded Systems: Protects sensitive components from damage caused by low voltage conditions.
3. Battery-Powered Devices: Monitors battery voltage to prevent deep discharge and extend battery life.
4. Industrial Control Systems: Provides voltage supervision for control units, preventing system malfunctions due to power supply issues.
5. Automotive Electronics: Ensures stable power supply for critical automotive systems, such as engine control units and safety modules.

Detailed and Complete Alternative Models

1. TPS3103K33DBVR: Similar to TPS3106K33DBVR but with a fixed reset timeout period of 100ms.
2. TPS3106E09DBVR: Offers a different threshold voltage of 0.9V, suitable for low-power applications.
3. TPS3808G01DBVR: Provides additional features like adjustable hysteresis and watchdog functionality.

These alternative models offer similar voltage monitoring and reset capabilities, but with slight variations in specifications and features. The choice of the appropriate model depends on the specific requirements of the application.

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