Texas Instruments LM3671 2MHz, 600mA Step-Down DC-DC Converter LM3671LCX-1.6/NOPB

The LM3671LCX-1.6/NOPB is a step-down DC-DC converter designed for low voltage applications, capable of delivering up to 600 mA of load current. It operates with an input voltage range of 2.7 V to 5.5 V, making it suitable for powering devices from a single Li-Ion cell battery. The converter features a fixed switching frequency of 2 MHz, which allows for the use of small surface-mount components, requiring only three external components: one inductor and two ceramic capacitors. This device includes automatic mode switching between PWM and PFM to optimize efficiency and battery life, with a typical quiescent current of 16 µA during light load conditions. In shutdown mode, the device consumes only 0.01 µA. The LM3671LCX-1.6/NOPB is AEC Q100-qualified, making it suitable for automotive applications, and it offers both fixed output voltage options and an adjustable version with a range from 1.1 V to 3.3 V. It also incorporates internal synchronous rectification for enhanced efficiency and features such as current overload and thermal shutdown protection.