NS6118 is an asynchronous buck DC-DC voltage regulator IC that supports wide voltage input. It integrates a high-side NMOS transistor and provides up to 2A output current. The IC uses current-mode loop control to achieve fast dynamic response and integrates multiple protection functions, including over-temperature protection, output short-circuit protection, and input undervoltage protection, effectively improving reliability under abnormal conditions. NS6118 is available in the standard ESOP8 package and is widely used in GPS trackers, automotive constant-voltage power supplies, high-voltage input LED lighting power supplies, and other applications.
NS6118 supports an 8V–100V wide input voltage range. When the input voltage drops to approximately 7.5V, the chip’s internal undervoltage lockout (UVLO) triggers shutdown; after the voltage recovers above 8V, normal operation automatically resumes, effectively preventing repeated start/stop at threshold voltages.
NS6118 has a built-in high-side NMOS transistor and provides up to 2A output current; the maximum peak inductor current can also be set via the resistor between VIN and CS.
The NS6118 has an external FB feedback pin, so the output voltage is not fixed; it can be adjusted to the required voltage using the voltage-divider resistors between FB and VOUT.
The chip integrates multiple protection functions, including over-temperature protection (shutdown at 150°C), output short-circuit protection, inductor peak current limit protection, and input undervoltage protection, effectively improving system reliability under abnormal conditions.
NS6118 uses the standard ESOP8 package. Typical applications include GPS trackers, automotive constant-voltage power supplies, and high-voltage input LED driver power supplies.
NS6118 adopts an asynchronous buck architecture with a 150KHz switching frequency and current-mode loop control; under light load, it automatically enters skip mode, improving efficiency while reducing standby power consumption.