The LM25149QRGYRQ1 is a highly integrated, automotive-grade synchronous buck controller designed by Texas Instruments to deliver efficiency and reliability for automotive power supply applications. This advanced controller is tailored to manage and convert higher voltage batteries to the lower voltages required for various automotive subsystems, making it an essential component in modern vehicles.

Key Features

• Wide Input Voltage Range: The LM25149QRGYRQ1 operates over a broad input voltage range from 3.5V to 42V, accommodating a variety of battery voltages and transient conditions, ensuring consistent performance even under challenging electrical environments.
• High-Efficiency Operation: With its synchronous rectification and advanced control topologies, the device maximizes efficiency, which is crucial for reducing heat dissipation and improving system reliability.
• Robust Thermal Performance: The device is designed with thermal efficiency in mind, featuring a thermally enhanced package that helps to keep the controller operating within safe temperature limits.
• Adjustable Switching Frequency: The switching frequency of the LM25149QRGYRQ1 is adjustable from 100 kHz to 2.2 MHz, allowing designers to optimize the size of external components and the performance for specific applications.
• Enhanced Safety Features: It includes a range of protection features such as overvoltage, overcurrent, and thermal shutdown to ensure the safety and longevity of both the controller and the system it powers.
• Automotive-Qualified: As a Q1 device, it meets the stringent requirements of the automotive industry, including stress tests for reliability and performance across a wide range of temperatures.

Applications

The LM25149QRGYRQ1 is ideal for a variety of automotive applications, including infotainment systems, advanced driver assistance systems (ADAS), body control modules, and other automotive power systems that require a dependable and efficient power source.

Package and Availability

The device is available in a VQFN-20 package, providing a compact footprint for space-constrained automotive applications. For detailed specifications, sample requests, and ordering information, please visit the Texas Instruments website or contact your local TI distributor.