Texas Instruments

TL317PSR

TL317PSR Description

The TL317PSR from Texas Instruments is an adjustable positive linear voltage regulator designed for precision voltage regulation in low-power applications. With an input voltage range up to 38V and an adjustable output voltage from 1.2V to 32V, it delivers a stable 100mA output current. Packaged in an 8-pin SOIC with tape-and-reel (TR) mounting, this surface-mount IC is ideal for space-constrained designs. Although marked as obsolete, it remains a reliable choice for legacy systems due to its robust performance, 65dB PSRR (120Hz), and protection features like over-current and over-temperature shutdown. Compliant with ROHS3 and REACH standards, it suits environmentally conscious applications.

TL317PSR Features

• Wide Input Range: Supports up to 38V, accommodating diverse power sources.
• Adjustable Output: Fine-tune voltage from 1.2V to 32V for flexible design requirements.
• High PSRR: 65dB at 120Hz ensures minimal noise in sensitive circuits.
• Protection Mechanisms: Integrated over-current and over-temperature safeguards enhance reliability.
• Compact & Compliant: 8-SOIC package with ROHS3/REACH compliance for modern eco-friendly designs.
• Low Dropout: Efficient operation with minimal headroom loss.

TL317PSR Applications

• Precision Instrumentation: Stable voltage for sensors, ADCs, and measurement devices.
• Industrial Control Systems: Reliable power for PLCs, actuators, and low-power controllers.
• Legacy Electronics: Maintenance or upgrades for obsolete equipment requiring 1.2V–32V regulation.
• Portable Devices: Battery-powered applications benefiting from low quiescent current.
• Noise-Sensitive Circuits: Audio or RF systems leveraging high PSRR for clean power delivery.

Conclusion of TL317PSR

The TL317PSR excels in low-power, adjustable voltage regulation with its wide input range, high noise rejection, and robust protections. While obsolete, its performance and compliance make it a pragmatic choice for legacy or niche applications demanding precision and reliability. Engineers valuing flexibility and durability in compact designs will find this regulator a compelling solution.