Infineon TLE7276-2D: A High-Performance Dual LDO Voltage Regulator for Automotive Applications

In the demanding world of automotive electronics, reliability, efficiency, and robustness are non-negotiable. The Infineon TLE7276-2D stands out as a premier solution, engineered specifically to meet the stringent requirements of modern vehicles. This integrated circuit is a dual low-dropout (LDO) linear voltage regulator that provides two independent, highly stable voltage rails from a common input, making it an ideal power management cornerstone for a wide array of automotive applications.

Key Features and Technical Excellence

The TLE7276-2D is designed with a focus on performance and protection. Its two regulators can deliver a continuous output current of up to 300 mA each, sufficient to power critical systems like sensors, microcontrollers (MCUs), and infotainment components. A remarkably low dropout voltage ensures high efficiency even when the input voltage is only slightly above the output level, which is crucial during cranking scenarios when the vehicle's battery voltage can dip significantly.

A paramount concern in automotive design is system integrity. This LDO incorporates a comprehensive suite of protection features, including:

Overcurrent protection to safeguard the IC and the load during fault conditions.

Overtemperature shutdown to prevent thermal runaway.

Reverse polarity protection at the input, a critical defense against accidental battery misconnection.

Overvoltage protection (including load dump resilience) on the input side, allowing it to withstand the extreme voltage transients common in automotive environments.

Furthermore, the device offers excellent output voltage accuracy (±2%) and very low noise performance, which is essential for noise-sensitive applications like analog sensors and RF modules. The enable function for each channel allows for sophisticated power sequencing and sleep mode management, reducing the overall quiescent current and contributing to lower energy consumption when the vehicle is idle.

Target Applications

The TLE7276-2D's robust design makes it perfectly suited for the harsh automotive environment. It is AEC-Q100 qualified, ensuring it meets the rigorous quality and reliability standards for automotive components. Its primary applications include:

Body Control Modules (BCMs)

Gateway and Telematics Control Units

Infotainment and Cluster Systems

Advanced Driver-Assistance Systems (ADAS) sensors

General power supply for ECUs

ICGOOODFIND

ICGOOODFIND: The Infineon TLE7276-2D is a superior dual LDO regulator that exemplifies the integration of high performance, robust protection, and automotive-grade reliability. It simplifies power architecture design by providing two reliable voltage rails in a single package, reducing board space and component count. For engineers developing systems that must operate flawlessly under the voltage extremes and transients of an automobile, the TLE7276-2D offers a trusted and efficient power management solution.

Keywords:

1. Automotive LDO Regulator

2. Dual Voltage Output

3. High Reliability

4. Load Dump Protection

5. AEC-Q100 Qualified