onsemi

NCP1117DT33T5

NCP1117DT33T5 Description

The NCP1117DT33T5 from onsemi is a fixed-output linear voltage regulator designed to deliver a stable 3.3V output with a maximum current capacity of 1A. Housed in a DPAK package, this surface-mount device operates over 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 regulation even when the input voltage is close to the output level. The regulator features built-in protection against over-current and over-temperature conditions, enhancing reliability in demanding environments.

NCP1117DT33T5 Features

• Fixed 3.3V Output: Ensures precise voltage regulation for sensitive circuitry.
• High Current Capacity: Supports up to 1A output current, ideal for powering microcontrollers, sensors, and peripherals.
• Low Dropout Voltage: 1.2V @ 800mA minimizes power dissipation, improving efficiency.
• Robust Protection: Includes over-current and over-temperature safeguards for enhanced durability.
• Wide Operating Range: Functions reliably from 0°C to 125°C, suitable for industrial and automotive applications.
• Low Quiescent Current: 10 mA Iq reduces power consumption in standby modes.
• High PSRR: 64dB (120Hz) ensures excellent noise suppression for clean power delivery.

NCP1117DT33T5 Applications

This regulator is particularly well-suited for:

• Embedded Systems: Providing stable power to microcontrollers, FPGAs, and memory modules.
• Industrial Automation: Powering sensors, actuators, and control systems in harsh environments.
• Consumer Electronics: Voltage regulation in set-top boxes, routers, and IoT devices.
• Automotive Electronics: Supporting infotainment systems, ECUs, and lighting controls.
• Battery-Powered Devices: Efficiently managing power in portable equipment due to its low dropout and quiescent current.

Conclusion of NCP1117DT33T5

The NCP1117DT33T5 stands out as a reliable, high-performance linear regulator, offering a balance of efficiency, protection, and versatility. Its 1A output capability, low dropout voltage, and robust thermal/current protection make it a preferred choice for applications requiring stable power in compact designs. While marked as obsolete, its proven performance ensures continued relevance in legacy systems and designs prioritizing durability. For engineers seeking a dependable 3.3V regulator, this device remains a strong contender despite newer alternatives.