onsemi

NCP1117DT25RKG

NCP1117DT25RKG Description

The NCP1117DT25RKG from onsemi is a fixed-output linear voltage regulator designed to deliver a stable 2.5V output at up to 1A of continuous current. Housed in a DPAK (TO-252) package, this surface-mount regulator features a wide input voltage range of up to 20V, making it suitable for a variety of power supply applications. With a low dropout voltage of 1.2V @ 800mA, it ensures efficient operation even when the input voltage is close to the output level. The device operates over a temperature range of 0°C to 125°C, making it robust for industrial and automotive environments.

NCP1117DT25RKG Features

• Fixed 2.5V Output: Ensures precise voltage regulation without external feedback components.
• High Current Capability: Supports 1A output current with built-in over-current and over-temperature protection.
• Low Dropout Voltage: 1.2V @ 800mA minimizes power dissipation, improving efficiency.
• Excellent PSRR: 68dB (120Hz) provides superior noise rejection for sensitive applications.
• Wide Input Range: Accepts up to 20V, accommodating various power sources.
• RoHS3 & REACH Compliant: Meets environmental and safety standards.
• Surface-Mount DPAK Package: Optimized for space-constrained PCB designs.

NCP1117DT25RKG Applications

This regulator is ideal for:

• Embedded Systems: Powering microcontrollers, FPGAs, and sensors requiring stable 2.5V rails.
• Automotive Electronics: Suitable for infotainment, ADAS, and lighting systems due to its wide temperature tolerance.
• Industrial Controls: Reliable voltage regulation for PLCs, motor drivers, and instrumentation.
• Consumer Electronics: Used in set-top boxes, routers, and portable devices where low dropout is critical.
• Battery-Powered Devices: Efficiently steps down higher battery voltages to 2.5V with minimal losses.

Conclusion of NCP1117DT25RKG

The NCP1117DT25RKG is a high-performance linear regulator offering a balance of efficiency, reliability, and compact design. Its low dropout, high PSRR, and robust protection features make it a preferred choice for demanding applications in automotive, industrial, and consumer electronics. While marked as obsolete, its proven performance ensures continued relevance in legacy and cost-sensitive designs. For engineers seeking a dependable 2.5V regulator, this device remains a strong contender.