LM217LD13TR Adjustable Linear Voltage Regulator IC

Introducing the LM217LD13TR: Precision Power Management for Modern Electronics

In today's rapidly evolving electronic landscape, reliable voltage regulation remains a cornerstone of circuit design. STMicroelectronics' LM217LD13TR emerges as a versatile solution for engineers seeking precise power management in compact surface-mount applications. This adjustable linear regulator combines robust performance with thermal protection features, making it ideal for a wide range of industrial, automotive, and consumer electronics.

Technical Excellence in Voltage Regulation

Engineered with advanced bipolar technology, the LM217LD13TR delivers exceptional line and load regulation while maintaining stability across diverse operating conditions. Its adjustable output voltage range (1.2V to 37V) provides unparalleled flexibility, complemented by a maximum 40V input capability that accommodates various power supply configurations. The device's 100mA output current capacity ensures reliable performance in low-power applications while maintaining minimal thermal dissipation through its efficient 8-SOIC package design.

Advanced Protection Architecture

Beyond basic regulation, this STMicroelectronics device incorporates comprehensive safety features essential for modern electronics. The integrated thermal shutdown mechanism prevents damage during overload conditions, while the short-circuit protection ensures reliable operation in unpredictable environments. These safeguards, combined with the regulator's inherent stability (no external capacitors required), make it particularly suitable for harsh operating environments where component failure could have critical consequences.

Design Flexibility and Package Innovation

The 8-SOIC surface-mount package (3.90mm width) represents a perfect balance between space optimization and thermal performance. This compact footprint enables seamless integration into densely populated PCBs while maintaining sufficient heat dissipation for continuous operation. The adjustable output voltage feature eliminates the need for multiple fixed-voltage regulators, simplifying inventory management while providing designers with precise control over power rails.

Applications Across Industries

From precision instrumentation to automotive control systems, the LM217LD13TR demonstrates remarkable versatility. Its wide operating temperature range and robust protection features make it particularly valuable in:

- Industrial control systems requiring stable reference voltages
- Portable electronic devices needing efficient power conversion
- Automotive electronics with fluctuating supply conditions
- Test equipment demanding precise voltage calibration
- Embedded systems with space-constrained designs

Performance Beyond Expectations

With a typical quiescent current of just 5mA, this regulator achieves exceptional efficiency for a linear architecture. The device's 80dB power supply rejection ratio (PSRR) at 120Hz ensures minimal ripple transmission, making it suitable for noise-sensitive applications. When compared to switching regulators, its low-noise operation and simplicity offer distinct advantages in analog circuits and RF applications where electromagnetic interference (EMI) must be minimized.

Engineers will appreciate the LM217LD13TR's ease of implementation, requiring only two external resistors for voltage adjustment. This simplicity, combined with STMicroelectronics' proven reliability, makes it an optimal choice for both prototype development and high-volume production. As electronics continue to shrink while increasing in complexity, this adjustable regulator stands as a testament to STMicroelectronics' commitment to delivering precision power management solutions that meet evolving design challenges.

Tags: Voltage Regulation, Power Management, Electronic Components, Circuit Design, Semiconductor Devices