onsemi NCP4682DSQ25T1G: A 25V, 150mA Ultra-Low-Iq Voltage Regulator for Always-On Applications

In the rapidly evolving world of electronics, the demand for "always-on" applications continues to surge. From smartphones and wearables to IoT sensors and automotive safety systems, these circuits require a continuous power supply to perform critical background functions like real-time clock (RTC) keeping, sensor monitoring, and system wake-up. The primary challenge in designing such systems is minimizing quiescent current (Iq) to preserve battery life without compromising on performance or integration. Addressing this challenge head-on, onsemi's NCP4682DSQ25T1G emerges as a premier solution, setting a new benchmark for power management in space-constrained, power-sensitive designs.

This voltage regulator is a high-performance, low-dropout (LDO) linear regulator engineered for exceptional efficiency. Its standout feature is an ultra-low quiescent current of just 300 nA (typical). This remarkably low Iq is the key to its success in always-on applications, as it ensures that the regulator itself consumes almost negligible power while in a standby or light-load state. This directly translates to extended battery life, allowing end products to operate for weeks, months, or even years on a single charge.

Beyond its ultra-low Iq, the NCP4682DSQ25T1G is built for robustness and versatility. It supports a wide input voltage range from 2.5V up to 25V, making it exceptionally durable against voltage spikes and suitable for a broad array of power sources, including 12V-24V automotive batteries, industrial power rails, and multi-cell battery packs. Despite its tiny SC-82AB package, it delivers a solid 150mA of continuous output current with a fixed, precise output voltage of 2.5V. The device also incorporates crucial protection features such as current limiting and thermal shutdown, safeguarding both the regulator and the downstream circuitry from fault conditions.

The integration of these features into a minuscule package makes the NCP4682 an ideal choice for designers battling strict board space constraints. Its combination of high input voltage tolerance, stable output, and minimal power loss establishes it as a critical component for powering always-on subsystems in:

Automotive Electronics: Infotainment memory, telematics, and ADAS modules.

Portable and Battery-Powered Devices: Wearables, medical health monitors, and smart trackers.

Industrial and IoT Applications: Wireless sensor nodes, gateways, and smart meters.

ICGOOODFIND: The onsemi NCP4682DSQ25T1G stands out as an exceptally efficient and robust power management solution specifically tailored for the always-on era. Its unparalleled combination of ultra-low quiescent current, high input voltage tolerance, and integrated protection in a miniature form factor makes it an indispensable component for designers aiming to maximize reliability and battery longevity in modern electronic products.

Keywords: Ultra-Low Iq, Always-On Applications, Voltage Regulator, Extended Battery Life, 25V Input.