Infineon TLE4275GV33ATMA1 3V Low-Drop Voltage Regulator: Features and Applications

The Infineon TLE4275GV33ATMA1 is a monolithic integrated low-drop voltage regulator designed to deliver a fixed 3.3V output with a maximum output current of 450mA. Engineered for robust performance in automotive and industrial environments, this IC combines high accuracy, low quiescent current, and comprehensive protection features, making it a reliable solution for powering sensitive electronic control units (ECUs), sensors, and microcontrollers.

Key Features

One of the standout attributes of the TLE4275 is its very low dropout voltage, typically 300mV at 400mA load current, which allows it to maintain regulation even when the input voltage is only slightly above the output level. This is crucial in automotive applications where battery voltage can sag during cranking. The device boasts high accuracy with ±2% output voltage tolerance over the entire temperature range, ensuring stable power for precision analog and digital circuits.

The regulator features an extremely low quiescent current of typically 40µA in ON mode, which is vital for reducing power consumption in always-on systems, thereby helping to meet stringent automotive energy requirements. It also includes a wide input voltage range from 5.5V to 45V, offering protection against load dump and transients common in 12V and 24V vehicle systems.

A suite of integrated protection mechanisms enhances its reliability. These include short-circuit protection, current limitation, and overtemperature shutdown. Furthermore, the device incorporates a reset circuit with a programmable delay time, which can monitor the output voltage and generate a reset signal for a microcontroller if the output falls below a threshold, ensuring safe system operation.

Primary Applications

The TLE4275GV33ATMA1 is predominantly used in automotive electronics, such as body control modules, instrument clusters, and infotainment systems. Its ability to withstand harsh conditions makes it equally suitable for industrial control systems, sensor interfaces, and battery-powered portable equipment requiring a stable voltage rail.

ICGOODFIND: The Infineon TLE4275GV33ATMA1 is a highly robust and efficient low-dropout regulator, offering exceptional accuracy, low power consumption, and comprehensive built-in protection. It is an ideal choice for designers seeking a reliable power management solution for demanding automotive and industrial applications.

Keywords: Low-Dropout Regulator, Automotive Electronics, Voltage Regulation, Quiescent Current, Protection Features