TPS25940ARVCT

Product Overview

Category

The TPS25940ARVCT belongs to the category of electronic components, specifically power management integrated circuits (PMICs).

Use

This product is primarily used for overvoltage and overcurrent protection in various electronic systems and devices.

Characteristics

• Overvoltage and overcurrent protection
• Low quiescent current
• Fast response time
• Wide input voltage range
• Adjustable current limit
• Thermal shutdown protection

Package

The TPS25940ARVCT is available in a small outline package (SOP) with 16 pins.

Essence

The essence of this product lies in its ability to safeguard electronic systems from potential damage caused by excessive voltage or current.

Packaging/Quantity

The TPS25940ARVCT is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 18V
• Current Limit Range: 0.5A to 4A
• Quiescent Current: 10µA (typical)
• Response Time: <1µs
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The TPS25940ARVCT features the following pin configuration:

1. EN (Enable)
2. IN (Input Voltage)
3. GND (Ground)
4. PG (Power Good)
5. FLT (Fault)
6. ILIM (Current Limit)
7. VOUT (Output Voltage)
8. VREF (Reference Voltage)
9. SS (Soft Start)
10. FB (Feedback)
11. NC (No Connection)
12. NC (No Connection)
13. NC (No Connection)
14. NC (No Connection)
15. NC (No Connection)
16. NC (No Connection)

Functional Features

• Overvoltage protection: The TPS25940ARVCT monitors the input voltage and disconnects the load when it exceeds a predefined threshold.
• Overcurrent protection: It limits the output current to prevent damage to the system in case of excessive load.
• Power Good indication: The PG pin provides a signal indicating that the output voltage is within the acceptable range.
• Fault detection: The FLT pin signals any fault condition, such as overvoltage or overcurrent events.
• Adjustable current limit: The ILIM pin allows the user to set the desired current limit according to the specific application requirements.
• Soft Start: The SS pin enables a controlled startup sequence, reducing inrush current and minimizing stress on the system.

Advantages and Disadvantages

Advantages

• Robust protection against overvoltage and overcurrent events
• Low quiescent current ensures minimal power consumption
• Fast response time for rapid fault detection and protection activation
• Wide input voltage range accommodates various applications
• Adjustable current limit offers flexibility in system design
• Thermal shutdown protection prevents overheating and damage

Disadvantages

• Limited maximum current limit range may not be suitable for high-power applications
• Lack of integrated communication interface for remote monitoring/control

Working Principles

The TPS25940ARVCT operates based on a combination of voltage and current sensing mechanisms. It continuously monitors the input voltage and compares it to a predefined threshold. If the voltage exceeds this threshold, the device quickly disconnects the load to protect the downstream circuitry. Similarly, the current flowing through the device is monitored, and if it exceeds the set current limit, the TPS25940ARVCT limits the output current to prevent damage.

Detailed Application Field Plans

The TPS25940ARVCT finds applications in various electronic systems where overvoltage and overcurrent protection is crucial. Some potential application fields include:

1. Power supplies: Ensuring the safety of power supply units by protecting against voltage spikes and excessive current draw.
2. Battery charging systems: Safeguarding battery charging circuits from potential damage caused by overvoltage or overcurrent conditions.
3. Industrial automation: Protecting sensitive electronic components in industrial control systems from electrical faults.
4. Automotive electronics: Providing reliable protection for automotive electronic systems, such as infotainment units and engine control modules.

Detailed and Complete Alternative Models

1. TPS25940ARVCR: Similar to TPS25940ARVCT, but available in a different package (QFN).
2. TPS25942ARVCT: A higher current variant with a maximum current limit of 6A.
3. TPS25944ARVCT: Another higher current variant with a maximum current limit of 8A.
4. TPS25946ARVCT: A lower current variant with a maximum current limit of 2A.

These alternative models offer similar functionality but cater to different current requirements in various applications.

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