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NCP4680DSQ15T1G

NCP4680DSQ15T1G Description

The NCP4680DSQ15T1G is a fixed-output, low-dropout (LDO) linear voltage regulator from onsemi, designed to deliver a stable 1.5V output with a maximum current of 150mA. Housed in a compact SC-88A (SOT-353) package, this surface-mount regulator is optimized for space-constrained applications. It operates with an input voltage range up to 5.25V, featuring a low dropout voltage of 0.54V (max) at 150mA, ensuring efficient performance even with minimal headroom. With a quiescent current of just 70 µA, it is well-suited for battery-powered devices. The device includes enable control and over-current protection, enhancing system reliability.

NCP4680DSQ15T1G Features

• Fixed 1.5V Output: Precision-regulated voltage for sensitive low-power circuits.
• Low Dropout (0.54V @ 150mA): Maintains regulation with minimal input-output differential.
• Ultra-Low Quiescent Current (70 µA): Extends battery life in portable applications.
• Enable Pin: Allows for power management via external control.
• Over-Current Protection: Safeguards against excessive load conditions.
• High PSRR (75dB @ 1kHz): Excellent noise rejection for clean power delivery.
• MSL1 (Unlimited) & REACH Compliant: Suitable for industrial and consumer applications.

NCP4680DSQ15T1G Applications

This LDO is ideal for:

• Portable Electronics: Smartwatches, wireless sensors, and IoT devices requiring stable, low-noise power.
• Battery-Powered Systems: Extends runtime in handheld medical devices and wearables.
• Noise-Sensitive Analog Circuits: Supports precision ADCs, DACs, and RF modules.
• Embedded Systems: Microcontroller power rails in automotive and industrial control systems.

Conclusion of NCP4680DSQ15T1G

The NCP4680DSQ15T1G combines low power consumption, high PSRR, and robust protection features in a miniature footprint, making it an excellent choice for energy-efficient and noise-critical designs. While marked as obsolete, its performance characteristics remain competitive for legacy or low-volume applications requiring reliable 1.5V regulation. Engineers should evaluate alternative onsemi LDOs for new designs while considering this part for maintenance or specific use cases.