TPS2101D

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisor and Reset IC

Characteristics: - Monitors the voltage level of a power supply - Generates a reset signal when the voltage falls below a specified threshold - Ensures proper system initialization and operation

Package: SOIC-8

Essence: The TPS2101D is a voltage supervisor and reset IC designed to monitor the voltage level of a power supply and generate a reset signal when the voltage falls below a specified threshold. It is commonly used in various electronic systems to ensure proper system initialization and operation.

Packaging/Quantity: The TPS2101D is available in a small outline integrated circuit (SOIC) package with 8 pins. It is typically sold in reels or tubes containing multiple units.

Specifications

The TPS2101D has the following specifications:

• Supply Voltage Range: 2.5V to 6.5V
• Threshold Voltage Options: 2.32V, 3.08V, 4.38V, and Adjustable
• Reset Timeout Period: 100ms, 200ms, 400ms, and Adjustable
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Output Type: Active Low Push-Pull

Detailed Pin Configuration

The TPS2101D features the following pin configuration:

1. GND: Ground connection
2. MR: Manual reset input
3. VDD: Positive supply voltage
4. RESET: Reset output
5. TH: Threshold voltage selection
6. CT: Capacitor connection for adjustable threshold and timeout
7. NC: No connection
8. VDDQ: Quiescent supply voltage

Functional Features

The TPS2101D offers the following functional features:

• Voltage Monitoring: Monitors the voltage level of the power supply.
• Reset Generation: Generates a reset signal when the voltage falls below the specified threshold.
• Manual Reset: Allows for manual reset by asserting a low signal on the MR pin.
• Adjustable Threshold and Timeout: Provides flexibility in setting the voltage threshold and reset timeout period.
• Power-On Reset Delay: Ensures proper system initialization by delaying the reset output after power-up.

Advantages and Disadvantages

Advantages: - Compact and easy-to-use IC package - Wide supply voltage range - Multiple threshold voltage options - Adjustable threshold and timeout settings - Low quiescent current consumption

Disadvantages: - Limited number of threshold voltage options - No internal pull-up resistor for the MR pin

Working Principles

The TPS2101D operates by continuously monitoring the voltage level of the power supply. When the voltage falls below the specified threshold, the reset output is asserted low, indicating a system reset condition. The reset signal remains active until the voltage rises above the threshold or a manual reset is triggered through the MR pin. The adjustable threshold and timeout options allow customization to meet specific system requirements.

Detailed Application Field Plans

The TPS2101D finds applications in various electronic systems where voltage monitoring and reset functionality are crucial for proper operation. Some potential application fields include:

1. Microcontrollers and Microprocessors: Ensuring reliable system startup and preventing erratic behavior due to unstable power supply conditions.
2. Communication Systems: Providing a reset mechanism to recover from power supply glitches and ensure stable operation.
3. Industrial Control Systems: Enabling controlled shutdown and restart procedures during power fluctuations or failures.
4. Automotive Electronics: Safeguarding critical components and systems against voltage drops and ensuring proper initialization.

Detailed and Complete Alternative Models

1. TPS2101DCKR: Similar to TPS2101D, but available in a smaller SC-70 package.
2. TPS2101DGKR: Similar to TPS2101D, but with an adjustable threshold and timeout period.
3. TPS2101DGNR: Similar to TPS2101D, but with an active-high reset output.

These alternative models offer similar functionality to the TPS2101D and can be considered based on specific application requirements.

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