Infineon TLE4284DV50ATMA1 5V Low-Drop Voltage Regulator: Features and Applications

The Infineon TLE4284DV50ATMA1 is a monolithic integrated low-drop voltage regulator designed to deliver a precise, fixed 5V output from a higher input voltage. As a critical component in modern electronic systems, it provides the stable and clean power supply required by sensitive microcontrollers, sensors, and logic circuits, ensuring reliable operation even under challenging conditions such as voltage fluctuations in automotive environments.

A standout feature of this regulator is its extremely low dropout voltage. With a maximum dropout of just 450mV at a full load current of 250mA, it can continue to regulate the output voltage effectively even when the input voltage dips very close to 5V. This high efficiency minimizes power loss and is particularly valuable in battery-powered applications or during automotive cranking scenarios, where the input voltage can sag significantly.

The device is engineered for robust performance and high reliability. It incorporates a comprehensive suite of internal protection mechanisms, including current limiting, overtemperature shutdown, and reverse polarity protection. This makes it exceptionally suited for the harsh environment of automotive electronics, safeguarding both the regulator itself and the downstream components it powers from potential damage.

Furthermore, the TLE4284DV50ATMA1 offers excellent output accuracy and low noise performance. Its initial accuracy is typically within ±2%, ensuring a stable reference for precision circuits. Additional features like an enable pin allow for external on/off control, facilitating power management to reduce quiescent current in standby modes. The device is also designed with low quiescent current in operation, which contributes to higher overall system efficiency.

Applications for this voltage regulator are vast and varied. Its primary domain is automotive electronics, where it is used to power:

Body control modules (BCMs)

Instrument clusters and infotainment systems

Sensor modules and airbag control units

Engine control units (ECUs)

Beyond the automotive sector, it is equally effective in industrial control systems, consumer appliances, and any application requiring a stable, protected 5V power rail from an unregulated source like a 12V battery.

ICGOO

The Infineon TLE4284DV50ATMA1 is a highly robust and efficient 5V low-dropout regulator. Its exceptional combination of low dropout voltage, integrated protection features, and automotive-grade reliability makes it an superior choice for designers building systems that must perform reliably in demanding electrical environments.

Keywords:

1. Low-Dropout (LDO) Regulator

2. 5V Output

3. Automotive Grade

4. Reverse Polarity Protection

5. 250mA Current