Texas Instruments

LM317S/NOPB

LM317S/NOPB Description

The LM317S/NOPB from Texas Instruments is a high-performance, adjustable positive linear voltage regulator designed for surface-mount applications. With an input voltage range up to 37V and an adjustable output voltage from 1.25V to 37V, this regulator delivers a stable 1.5A output current, making it ideal for a wide range of power supply designs. The device operates within a temperature range of 0°C to 125°C, ensuring reliability in demanding environments. Packaged in a DDPAK (TO-263) tube, it combines robust thermal performance with compact form factor, suitable for space-constrained designs.

LM317S/NOPB Features

• Adjustable Output Voltage: Precision 1.25V reference voltage allows fine-tuning of output via external resistors.
• High Current Capability: Delivers 1.5A continuous output current with over-current, over-temperature, and short-circuit protection for enhanced reliability.
• Low Quiescent Current: 10 mA typical Iq minimizes power loss in standby modes.
• Excellent Line/Load Regulation: Features 64dB PSRR (120Hz), ensuring stable output under varying input conditions.
• Wide Operating Temperature: 0°C to 125°C range suits industrial and automotive applications.
• RoHS3 & REACH Compliant: Meets stringent environmental standards.

LM317S/NOPB Applications

• Bench Power Supplies: Adjustable output enables versatile lab equipment.
• Industrial Control Systems: Reliable regulation for PLCs, motor drivers, and sensors.
• Automotive Electronics: Stable voltage for infotainment, lighting, and ECUs.
• Consumer Electronics: Power management in TVs, routers, and audio amplifiers.
• Battery Chargers: Precision voltage control for Li-ion/NiMH charging circuits.

Conclusion of LM317S/NOPB

The LM317S/NOPB stands out for its flexibility, robustness, and efficiency, making it a preferred choice for engineers requiring adjustable voltage regulation in high-current applications. Its protection features, wide input range, and thermal performance ensure longevity in harsh conditions, while its surface-mount package simplifies PCB integration. Whether for industrial, automotive, or consumer designs, this regulator offers a cost-effective, high-performance solution with TI’s proven reliability.