Infineon TLE4279GM: A 5-V Low-Drop Voltage Regulator for Automotive and Industrial Applications
The demand for robust and reliable voltage regulation is paramount in automotive and industrial electronics, where systems must operate flawlessly under harsh conditions. Addressing this need, the Infineon TLE4279GM stands out as a high-performance 5-V low-dropout (LDO) voltage regulator designed to deliver exceptional stability and efficiency. This device integrates advanced protection features and a wide operational range, making it a cornerstone for power management in critical applications.
Key Features and Technical Highlights
The TLE4279GM is engineered to provide a fixed 5-V output with a maximum output current of 450 mA. Its low dropout voltage—typically 200 mV at 150 mA—ensures efficient operation even when the input voltage is close to the output level, minimizing power dissipation and enhancing energy efficiency. The device operates over a broad input voltage range from 5.5 V to 42 V, accommodating voltage spikes common in automotive environments, such as load dump conditions.
A standout feature is its ultra-low quiescent current, which drops to a mere 18 µA in standby mode. This is particularly beneficial for automotive applications where minimizing power consumption during ignition-off phases is crucial for battery longevity. Additionally, the regulator boasts high accuracy, with output voltage tolerance within ±2% under varying load and temperature conditions.
Robust Protection for Demanding Environments
The TLE4279GM is built to withstand the rigors of automotive and industrial settings. It includes comprehensive protection mechanisms such as overtemperature shutdown, short-circuit protection, and reverse polarity protection. The integrated overvoltage protection (up to 45 V) safeguards connected components from potential damage due to transient voltage surges. Moreover, the device features an enable pin that allows for external control, facilitating power management in multi-voltage systems.
Automotive-Grade Reliability
Qualified according to AEC-Q100 standards, the TLE4279GM meets the stringent requirements for automotive electronics. Its ability to operate in a temperature range from -40 °C to 150 °C ensures performance stability under extreme conditions, from cold cranking in vehicles to high-temperature industrial processes. The regulator’s internal current limiting and thermal overload protection further enhance its durability, preventing failure during fault conditions.
Application Versatility
This LDO regulator is ideal for powering microcontrollers, sensors, and actuators in automotive control units, including engine management systems, infotainment, and advanced driver-assistance systems (ADAS). In industrial contexts, it supports programmable logic controllers (PLCs), factory automation, and instrumentation by providing a clean, stable voltage supply amidst electrical noise and fluctuations.
The Infineon TLE4279GM exemplifies innovation in voltage regulation, combining efficiency, robustness, and versatility. Its low dropout, minimal quiescent current, and extensive protection features make it an optimal choice for developers seeking reliability in challenging automotive and industrial environments.
Keywords: Low-Dropout Regulator, Automotive Electronics, Voltage Regulation, AEC-Q100, Power Management.
