LM5152-Q1

The LM5152-Q1 is a high-efficiency, wide-input voltage buck-boost converter designed for automotive and industrial applications. It supports an input voltage range from 4.5 V to 60 V, making it suitable for harsh environments where supply voltages can vary significantly. The device integrates a high-side N-channel MOSFET driver and features a synchronous rectification architecture that enhances efficiency across a broad load range. This converter operates in both buck and boost modes seamlessly, maintaining regulation regardless of whether the input voltage is above or below the output voltage. Its peak current-mode control topology ensures fast transient response and stable operation under dynamic load conditions. The internal compensation network simplifies design while maintaining optimal loop stability without external components. Designed with automotive-grade reliability, the LM5152-Q1 meets AEC-Q100 Grade 1 qualification standards, ensuring robust performance in temperature extremes from –40°C to +125°C. It includes comprehensive protection features such as over-current protection (OCP), thermal shutdown, undervoltage lockout (UVLO), and short-circuit protection, which enhance system safety and longevity. The device supports a programmable switching frequency between 100 kHz and 1 MHz, allowing designers to optimize efficiency and reduce external component size. It also offers adjustable soft-start and enable functionality for controlled power-up sequences and system integration flexibility. The compact 28-pin HTSSOP package provides efficient thermal dissipation and easy PCB layout. Common applications include automotive battery-powered systems, ADAS (Advanced Driver Assistance Systems), infotainment units, and industrial power supplies requiring stable output from fluctuating input sources. It is ideal for use in 12V, 24V, and 48V automotive platforms, as well as in distributed power architectures where multiple voltage rails must be derived efficiently from a single source. With its integrated gate drivers, low quiescent current, and high switching frequency capability, the LM5152-Q1 delivers high power density and minimal external component count, reducing board space and overall system cost. It is particularly suited for designs demanding high reliability, efficiency, and compliance with stringent automotive standards.