TPS2421-1DDA

Product Overview

Category

The TPS2421-1DDA belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various electronic devices and systems to regulate and control power supply, ensuring efficient and reliable operation.

Characteristics

• The TPS2421-1DDA offers high precision and accuracy in power management.
• It provides protection against overvoltage, undervoltage, and overcurrent conditions.
• This IC has a low quiescent current, making it suitable for battery-powered applications.
• It supports a wide input voltage range, allowing flexibility in different power supply configurations.

Package

The TPS2421-1DDA is available in a small outline package (SOP) or a thin shrink small outline package (TSSOP), which ensures easy integration into various circuit designs.

Essence

The essence of the TPS2421-1DDA lies in its ability to efficiently manage power supply, protecting sensitive components from potential damage caused by voltage fluctuations or excessive current.

Packaging/Quantity

The TPS2421-1DDA is typically packaged in reels or tubes, with quantities varying depending on the manufacturer's specifications. Common packaging options include 2500 units per reel or 100 units per tube.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 0.8V to 6V
• Quiescent Current: 10µA
• Operating Temperature Range: -40°C to 125°C
• Maximum Output Current: 1A
• Overvoltage Protection Threshold: Adjustable
• Undervoltage Protection Threshold: Adjustable
• Overcurrent Protection Threshold: Adjustable

Detailed Pin Configuration

The TPS2421-1DDA features a standard pin configuration, as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. VOUT: Output voltage pin
5. FB: Feedback pin
6. OCSET: Overcurrent protection threshold setting pin

Functional Features

• Overvoltage Protection: The TPS2421-1DDA monitors the input voltage and automatically shuts down the output when it exceeds the set threshold, protecting downstream components.
• Undervoltage Protection: This IC also safeguards against low input voltage conditions, preventing potential damage to the system.
• Overcurrent Protection: By monitoring the output current, the TPS2421-1DDA can limit or shut down the power supply if the current exceeds the predefined threshold, ensuring safe operation.
• Enable Control: The enable pin allows for easy on/off control of the power supply, conserving energy and extending battery life.

Advantages and Disadvantages

Advantages

• High precision and accuracy in power management
• Wide input voltage range for versatile applications
• Efficient protection against overvoltage, undervoltage, and overcurrent conditions
• Low quiescent current for battery-powered devices

Disadvantages

• Limited maximum output current (1A)
• Requires external components for complete power management solution

Working Principles

The TPS2421-1DDA operates based on a feedback control loop that continuously monitors the input and output voltages and currents. It compares these values with the predefined thresholds and takes appropriate actions to regulate the power supply. By adjusting the duty cycle of an internal switch, the IC maintains the desired output voltage while providing protection against various fault conditions.

Detailed Application Field Plans

The TPS2421-1DDA finds applications in a wide range of electronic systems, including but not limited to: - Mobile devices - Portable medical equipment - Industrial automation systems - Automotive electronics - Power banks and chargers

Detailed and Complete Alternative Models

1. TPS2420-1DDA: Similar to the TPS2421-1DDA, but without adjustable overvoltage protection threshold.
2. TPS2422-1DDA: Offers higher maximum output current (2A) while maintaining similar features and characteristics.
3. TPS2421-2DDA: Dual-channel version of the TPS2421-1DDA, suitable for applications requiring multiple power supply outputs.

These alternative models provide options with varying specifications to cater to different design requirements.

In conclusion, the TPS2421-1DDA is a versatile integrated circuit designed for efficient power management, offering protection against voltage fluctuations and overcurrent conditions. Its wide range of applications and availability of alternative models make it a popular choice among electronic system designers.