The TLE4274DV50ATMA2 is a high-performance low-dropout (LDO) voltage regulator manufactured by Infineon Technologies. Designed to provide a stable 5V output with a maximum current of 400mA, this regulator is widely used in automotive, industrial, and consumer electronics applications. With advanced features such as short-circuit protection, overtemperature shutdown, and reverse polarity protection, the TLE4274DV50ATMA2 ensures reliable and safe operation in various power management circuits.
This article provides an in-depth overview of the TLE4274DV50ATMA2, covering its specifications, features, applications, circuit design, and real-world use cases. Additionally, we include a circuit diagram for reference.
Technical Specifications
The TLE4274DV50ATMA2 comes with a range of technical specifications that make it ideal for demanding power supply applications:
| Parameter | Specification |
|---|
| Output Voltage | 5V ±2% |
| Maximum Output Current | 400mA |
| Input Voltage Range | Up to 40V |
| Dropout Voltage | 0.5V max at 250mA |
| Quiescent Current | 220µA |
| Operating Temperature | -40°C to 150°C |
| Package Type | TO-252 (DPAK), 3-pin |
| Protections | Short-circuit, thermal, reverse polarity |
Key Features of TLE4274DV50ATMA2
Low Dropout Voltage: With a dropout voltage of just 0.5V at 250mA, this regulator efficiently maintains a stable 5V output.
Wide Input Voltage Range: Supports input voltages up to 40V, making it suitable for high-voltage applications.
High Load Regulation: Ensures a steady output even under fluctuating load conditions.
Short-Circuit Protection: Automatically limits current to prevent damage in case of a short circuit.
Thermal Shutdown: The device turns off when overheating is detected, ensuring protection from excessive thermal conditions.
Reverse Polarity Protection: Protects the regulator and connected components in case of incorrect polarity.
Automotive-Grade Reliability: Designed for harsh environments, making it ideal for automotive and industrial applications.
Applications of TLE4274DV50ATMA2
The TLE4274DV50ATMA2 is widely used across multiple industries due to its reliability and robust design. Some common applications include:
1. Automotive Electronics ??
Engine Control Units (ECUs)
Infotainment Systems
Advanced Driver Assistance Systems (ADAS)
Sensor Power Supply in Vehicles
2. Industrial Automation ??
3. Consumer Electronics ??
IoT Devices and Smart Home Applications
Security Systems and Surveillance Cameras
Networking Equipment (Routers, Modems, Gateways)
4. Battery-Powered Applications ??
Circuit Diagram for TLE4274DV50ATMA2
The following basic circuit diagram demonstrates how to use the TLE4274DV50ATMA2 LDO Voltage Regulators in a 5V voltage regulation circuit:
### Components Required:
TLE4274DV50ATMA2 (LDO Voltage Regulator)
10µF Capacitor (C1) - Input Stabilization
10µF Capacitor (C2) - Output Stabilization
Power Source (9V - 40V DC Input)
Load (5V circuit)
Vin (9V-40V)
|
C1 (10µF)
|
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| |
| TLE4274DV50ATMA2|
| |
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|
C2 (10µF)
|
Vout (5V)
This setup ensures a smooth 5V regulated output, which can be used for various electronic applications.
Use Case Scenario
Automotive ECU Power Supply System
One of the most common applications of the TLE4274DV50ATMA2 is in Engine Control Units (ECUs). Modern vehicles rely on ECUs to control engine functions, fuel injection, and diagnostics. These ECUs require a stable 5V power supply to ensure proper operation of microcontrollers and sensors.
Challenges:
Fluctuating Vehicle Battery Voltage: The automotive battery voltage can vary significantly, ranging from 9V to 16V under normal conditions and up to 40V in transient situations.
Electrical Noise and Spikes: Various components in the vehicle generate noise that can affect power management stability.
Reliability Requirements: Automotive electronics must operate reliably in extreme temperatures and harsh conditions.
Solution Using TLE4274DV50ATMA2:
The regulator efficiently converts the fluctuating battery voltage (9V-40V) to a stable 5V output.
Low dropout voltage ensures minimal energy loss, improving efficiency.
Built-in protections (thermal, short-circuit, reverse polarity) enhance safety and reliability.
Suitable for high-temperature environments (-40°C to 150°C).
Why Choose TLE4274DV50ATMA2 Over Other Voltage Regulators?
| Feature | TLE4274DV50ATMA2 | Standard LDO Regulators |
| Output Voltage | 5V | Varies (3.3V, 5V, etc.) |
| Max Output Current | 400mA | 100mA - 500mA |
| Input Voltage Range | Up to 40V | 12V - 24V |
| Dropout Voltage | 0.5V max @ 250mA | 1V - 2V |
| Thermal Shutdown | Yes | Varies |
| Short-Circuit Protection | Yes | Limited |
| Reverse Polarity Protection | Yes | No |
| Automotive-Grade Reliability | Yes | No |
This comparison highlights why the TLE4274DV50ATMA2 is the preferred choice for high-reliability applications requiring stable 5V power with robust protections.
Conclusion
The TLE4274DV50ATMA2 LDO Voltage Regulator by Infineon is an essential component for power regulation in automotive, industrial, and consumer electronics. With features like low dropout voltage, wide input voltage range, and comprehensive protection mechanisms, it ensures a stable and reliable 5V output for sensitive electronic circuits.
If you need a high-quality voltage regulator for automotive ECUs, industrial automation systems, or battery-powered devices, the TLE4274DV50ATMA2 is an excellent choice.
Get yours today from leading distributors in the USA, India, Australia, Europe, and beyond!
Download TLE4274DV50ATMA2 Datasheet (PDF)
To access detailed technical information, electrical characteristics, and design guidelines, download the TLE4274DV50ATMA2 datasheet from Infineon’s official website or authorized distributors.
FAQs on TLE4274DV50ATMA2 LDO Voltage Regulator
1. What is the TLE4274DV50ATMA2?
The TLE4274DV50ATMA2 is a low-dropout (LDO) linear voltage regulator by Infineon that provides a stable 5V output with a maximum current of 0.4A, designed for automotive, industrial, and consumer electronics applications.
2. What are the key features of the TLE4274DV50ATMA2?
- Output Voltage: 5V ±2%
- Maximum Output Current: 400mA
- Dropout Voltage: 0.5V (max) at 250mA
- Input Voltage Range: Up to 40V
- Protection: Short-circuit protection, overtemperature shutdown, and reverse polarity protection
- Package: 3-pin TO-252 (DPAK)
3. What are the typical applications of this voltage regulator?
The TLE4274DV50ATMA2 is used in:
- Automotive electronics (ECUs, infotainment, sensors)
- Industrial automation (PLCs, HMIs, motor controllers)
- Consumer electronics (security systems, networking equipment, IoT devices)
4. How does the TLE4274DV50ATMA2 work in a circuit?
It takes an input voltage (up to 40V) and regulates it down to 5V output. A capacitor at the input stabilizes voltage fluctuations, while an output capacitor ensures a steady output.
5. Does this voltage regulator require external components?
Yes, input (10µF) and output capacitors (10µF) are recommended to ensure stability and performance.
6. What protection features does the TLE4274DV50ATMA2 offer?
It includes short-circuit protection, overtemperature shutdown, and reverse polarity protection to enhance safety and longevity.
7. Where can I buy the TLE4274DV50ATMA2?
It is available from authorized distributors and online electronics retailers in the USA, India, Australia, Europe, and worldwide.
8. Is there a datasheet available for the TLE4274DV50ATMA2?
Yes, you can download the TLE4274DV50ATMA2 datasheet from Infineon’s official website or authorized distributor websites.
9. Can this regulator be used in battery-powered applications?
Yes, it is suitable for battery-operated systems where a stable 5V output is required.
10. How does the TLE4274DV50ATMA2 compare to other 5V LDO regulators?
It offers low quiescent current, high input voltage tolerance, and robust protection features, making it ideal for automotive and industrial applications compared to standard LDOs.