Texas Instruments

LM7805SX/NOPB

LM7805SX/NOPB Description

The LM7805SX/NOPB from Texas Instruments is a fixed 5V linear voltage regulator designed for surface-mount applications. It delivers a stable 1.5A output current with an input voltage range up to 35V, making it suitable for a wide variety of power supply designs. The regulator features low dropout voltage (2V max @ 1A) and high power supply rejection ratio (PSRR) of 80dB at 120Hz, ensuring reliable performance in noisy environments. Packaged in a DDPAK/TO-263-3 format, it is optimized for high-efficiency thermal dissipation and is RoHS3 compliant, meeting modern environmental standards.

LM7805SX/NOPB Features

• Fixed 5V Output: Ensures stable voltage regulation without external adjustments.
• High Current Capacity: Supports up to 1.5A continuous output, ideal for powering multiple components.
• Wide Input Range (Up to 35V): Accommodates fluctuating input sources while maintaining regulation.
• Robust Protection: Includes over-temperature and short-circuit protection for enhanced reliability.
• Low Quiescent Current (8mA): Minimizes power loss in standby or low-load conditions.
• Surface-Mount Design (TO-263-3): Optimized for PCB space efficiency and thermal performance.
• High PSRR (80dB): Effectively filters input noise, critical for sensitive analog/digital circuits.

LM7805SX/NOPB Applications

• Embedded Systems: Provides stable 5V power for microcontrollers, sensors, and logic circuits.
• Industrial Controls: Used in PLCs, motor drivers, and automation equipment due to rugged design.
• Consumer Electronics: Powers audio/video devices, set-top boxes, and small appliances.
• Automotive Electronics: Suitable for infotainment and auxiliary systems (within operating temp limits).
• Battery-Powered Devices: Efficiently regulates voltage from higher battery packs (e.g., 12V/24V to 5V).

Conclusion of LM7805SX/NOPB

The LM7805SX/NOPB stands out as a high-reliability, high-performance linear regulator with superior thermal management and robust protection features. Its wide input range, high PSRR, and 1.5A output make it a versatile choice for demanding applications. Compared to similar models, it offers better efficiency in compact designs and compliance with RoHS3 standards. Ideal for engineers seeking a cost-effective, space-saving solution for 5V regulation in industrial, automotive, and consumer electronics.