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NCP561SN33T1G

NCP561SN33T1G Description

The NCP561SN33T1G from onsemi is a low-dropout (LDO) linear voltage regulator designed to deliver a fixed 3.3V output with a maximum output current of 150mA. Operating within an input voltage range up to 6V, this regulator features an ultra-low quiescent current of just 1 µA, making it ideal for battery-powered and energy-sensitive applications. Its low dropout voltage of 200mV at full load (150mA) ensures efficient performance even when the input voltage approaches the output level. Packaged in a compact 5-pin TSOP and available in Tape & Reel (TR), it is optimized for surface-mount assembly in space-constrained designs.

NCP561SN33T1G Features

• Fixed 3.3V Output: Stable voltage regulation for precision applications.
• Ultra-Low Quiescent Current (1 µA): Extends battery life in portable devices.
• Low Dropout Voltage (200mV @ 150mA): Maintains regulation with minimal headroom.
• Enable Control Pin: Allows for power management via external logic.
• Robust Protection: Includes over-current and over-temperature safeguards for reliability.
• Wide Input Range (Up to 6V): Compatible with various power sources.
• Surface-Mount TSOP Package: Ideal for compact PCB designs.

NCP561SN33T1G Applications

This LDO regulator is particularly suited for:

• Portable Electronics: Smartphones, wearables, and IoT sensors benefit from its low Iq and small footprint.
• Embedded Systems: Provides stable power for microcontrollers, sensors, and wireless modules.
• Battery-Powered Devices: Extends operational life in medical devices, remote controls, and energy harvesters.
• Industrial Controls: Reliable voltage regulation in automation and instrumentation systems.

Conclusion of NCP561SN33T1G

The NCP561SN33T1G stands out for its ultra-low power consumption, compact form factor, and robust protection features, making it a superior choice for low-power, space-constrained designs. While marked as obsolete, its performance characteristics remain highly relevant for legacy or specialized applications requiring efficient, reliable voltage regulation. Engineers should evaluate alternative models from onsemi’s portfolio for new designs while considering this regulator for maintenance or low-volume production.