TPS3103E12DBVR

Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Low Power Consumption - Wide Operating Voltage Range - Adjustable Threshold Voltage - Small Package Size

Package: SOT-23-5

Essence: The TPS3103E12DBVR is a voltage supervisor IC that monitors the power supply voltage of electronic devices and provides a reset signal when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3103E12DBVR is available in a tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 6.5V
• Threshold Voltage Range: 0.8V to 5.5V
• Quiescent Current: 1.5µA (typical)
• Reset Timeout Period: 200ms (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS3103E12DBVR has a total of 5 pins:

1. GND: Ground pin
2. VDD: Supply voltage input
3. MR: Manual reset input
4. RESET: Reset output
5. TH: Threshold voltage adjustment pin

Functional Features

• Voltage Monitoring: The TPS3103E12DBVR continuously monitors the supply voltage and compares it with the threshold voltage set by the user.
• Reset Signal Generation: When the supply voltage falls below the threshold voltage, the TPS3103E12DBVR generates a reset signal to indicate a power failure or low voltage condition.
• Adjustable Threshold Voltage: The threshold voltage can be adjusted using an external resistor connected to the TH pin, allowing flexibility in setting the desired voltage level for triggering the reset signal.
• Manual Reset Input: The MR pin allows for a manual reset input, which can be used to override the voltage monitoring and generate a reset signal manually.

Advantages

• Low power consumption makes it suitable for battery-powered devices.
• Wide operating voltage range allows for compatibility with various power supply voltages.
• Adjustable threshold voltage provides flexibility in setting the desired voltage level for triggering the reset signal.
• Small package size (SOT-23-5) enables space-saving designs.

Disadvantages

• Lack of built-in hysteresis may result in potential noise-induced false triggering of the reset signal.
• Limited number of pins may restrict the integration of additional features or functionalities.

Working Principles

The TPS3103E12DBVR operates by continuously monitoring the supply voltage using an internal voltage reference. When the supply voltage falls below the threshold voltage set by the user, the IC generates a reset signal. This reset signal can be used to initiate system shutdown, perform error handling, or trigger other necessary actions.

Detailed Application Field Plans

The TPS3103E12DBVR is commonly used in various electronic devices and systems where reliable voltage monitoring and power failure detection are critical. Some application fields include:

1. Microcontrollers and Microprocessors
2. Embedded Systems
3. Industrial Control Systems
4. Power Management Units
5. Battery-Powered Devices

Detailed and Complete Alternative Models

1. TPS3103E18DBVR: Similar to TPS3103E12DBVR, but with an adjustable threshold voltage range of 1.8V to 5.5V.
2. TPS3103E25DBVR: Similar to TPS3103E12DBVR, but with an adjustable threshold voltage range of 2.5V to 5.5V.
3. TPS3103E33DBVR: Similar to TPS3103E12DBVR, but with an adjustable threshold voltage range of 3.3V to 5.5V.

These alternative models provide options for different threshold voltage requirements in various applications.

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