LM43601

The LM43601 from Texas Instruments is a synchronous step-down (buck) voltage converter designed for efficient power management. It supports a wide input voltage range from 3.5V to 36V, making it suitable for various power supply applications. The device can deliver a maximum output current of 1A.

Key electrical features include an adjustable switching frequency ranging from 200 kHz to 2.2 MHz, with a default of 500 kHz, allowing for optimization of efficiency and component size. It boasts a low quiescent current of 33 µA in regulation and high efficiency at light loads. The converter includes features such as overcurrent protection, power-good flag, soft start into pre-biased loads, and output voltage tracking capability.

Packaged in an HTSSOP (PWP) with a footprint of 32 mm², the LM43601 operates across a temperature range of -40°C to 125°C. Its integrated synchronous rectification enhances efficiency. The device is designed for stability with various capacitor types and offers protection features like output short-circuit protection with hiccup mode and overtemperature thermal shutdown.

This converter is well-suited for applications requiring a compact and efficient step-down voltage solution, such as industrial power supplies, battery-powered devices, and general power management systems.