Infineon TLE7273-2GV50: A 5V Low-Dropout Voltage Regulator for Automotive Applications

In the demanding world of automotive electronics, where components must operate reliably under extreme temperatures, voltage fluctuations, and harsh electromagnetic conditions, power management becomes a critical design challenge. Addressing this need, Infineon Technologies has developed the TLE7273-2GV50, a sophisticated 5V low-dropout (LDO) voltage regulator engineered specifically for the rigorous requirements of automotive applications.

The core function of the TLE7273-2GV50 is to provide a clean, stable, and precisely regulated 5V output from a vehicle's battery voltage, which can typically range from as low as 5.5V during cranking to over 40V during load-dump events. Its low-dropout voltage is a key feature, enabling it to continue regulating its output even when the input voltage dips very close to 5V. This ensures uninterrupted power to critical microcontrollers (MCUs), sensors, and system-on-chips (SoCs), preventing malfunctions or resets during low-battery conditions.

Beyond basic regulation, the TLE7273-2GV50 is packed with protective features that are essential for automotive robustness. It boasts integrated protection against over-current, over-temperature, and reverse polarity. Furthermore, it is designed to withstand high-voltage transients as outlined in the ISO 7672 pulse test standards, making it resilient against the electrical noise prevalent in automotive environments. A dedicated enable pin allows for external control of the regulator, facilitating smart power management strategies to reduce quiescent current and meet the strictest energy consumption targets in modern vehicles.

The device is offered in a compact, space-saving PG-SOT223-4 package, which is suitable for automated assembly processes. Its AEC-Q100 qualification guarantees its performance and reliability across the automotive temperature range of -40°C to +150°C junction temperature, making it an ideal choice for applications such as:

Engine Control Units (ECUs)

Transmission Control Modules

Body Control Modules (BCMs)

Advanced Driver-Assistance Systems (ADAS) sensors

ICGOOFIND: The Infineon TLE7273-2GV50 stands out as a highly reliable and protected LDO solution that delivers exceptional performance for powering the brain of automotive systems. Its combination of low dropout, comprehensive protection suite, and automotive-grade qualification makes it a superior choice for designers seeking to enhance the durability and functionality of their electronic control units.

Keywords: Automotive LDO Regulator, 5V Voltage Regulator, Low-Dropout Voltage, ISO 7672 Compliance, AEC-Q100 Qualified.