Texas Instruments

LM317AMDTX

LM317AMDTX Description

The LM317AMDTX from Texas Instruments is a high-performance, adjustable positive linear voltage regulator capable of delivering up to 1.5A of output current. Designed for surface-mount (TO-252-3) applications, it offers a wide input voltage range (up to 40V) and an adjustable output voltage from 1.25V to 37V, making it highly versatile for various power supply designs. With low quiescent current (10 mA) and excellent PSRR (80dB ~ 65dB at 120Hz), it ensures stable and efficient voltage regulation. The device is RoHS3 compliant and adheres to REACH regulations, though it is currently in Last Time Buy status, indicating end-of-life availability.

LM317AMDTX Features

• Adjustable Output Voltage (1.25V–37V): Provides flexibility for diverse voltage requirements.
• High Current Output (1.5A): Suitable for powering moderate-load circuits.
• Robust Protection: Includes over-current, over-temperature, and short-circuit protection for enhanced reliability.
• Low Dropout Voltage: Ensures efficient operation even with small input-output differentials.
• Surface-Mount Package (TO-252-3): Ideal for compact PCB designs.
• Excellent PSRR (80dB ~ 65dB): Minimizes noise and ripple for clean power delivery.
• Wide Input Range (Up to 40V): Compatible with various power sources.

LM317AMDTX Applications

• Industrial Power Supplies: Used in control systems, sensors, and instrumentation requiring stable voltage rails.
• Consumer Electronics: Ideal for adjustable power adapters, LED drivers, and audio amplifiers.
• Automotive Systems: Suitable for infotainment and auxiliary power modules (within voltage limits).
• Test & Measurement Equipment: Provides precise voltage regulation for sensitive circuits.
• Embedded Systems: Powers microcontrollers, FPGAs, and peripherals in compact designs.

Conclusion of LM317AMDTX

The LM317AMDTX stands out as a reliable, adjustable linear regulator with robust protection features and high efficiency. Its wide input range, high PSRR, and surface-mount packaging make it a preferred choice for engineers designing compact, noise-sensitive applications. While it is in Last Time Buy status, its performance and versatility ensure it remains a valuable component for legacy and new designs requiring stable, adjustable power. For projects demanding 1.5A output with precision regulation, the LM317AMDTX delivers a proven solution.