STMicroelectronics

L7915CD2T

L7915CD2T Description

The L7915CD2T is a fixed -15V negative linear voltage regulator from STMicroelectronics, designed to deliver a robust 1.5A output current with high reliability. Housed in a D2PAK (TO-263) surface-mount package, this regulator is optimized for applications requiring stable negative voltage rails. It features a low dropout voltage of 1.1V (typical) at 1A, ensuring efficient operation even with marginal input voltages. The device operates over a wide temperature range (0°C to 125°C) and includes critical protection features such as over-temperature and short-circuit shutdown, enhancing system durability.

L7915CD2T Features

• Fixed -15V Output: Ensures precise voltage regulation for negative rail applications.
• High Current Capability: Supports up to 1.5A continuous output current, ideal for power-hungry circuits.
• Low Dropout Voltage: 1.1V typical at 1A minimizes power dissipation and improves efficiency.
• Robust Protection: Integrated over-temperature and short-circuit protection safeguards against fault conditions.
• Excellent PSRR: 60dB at 120Hz reduces noise and ripple, making it suitable for sensitive analog circuits.
• Wide Operating Temperature: Reliable performance across 0°C to 125°C, suitable for industrial environments.
• RoHS3 & REACH Compliant: Meets stringent environmental and safety standards.

L7915CD2T Applications

The L7915CD2T is ideal for systems requiring a stable negative voltage supply, including:

• Power Supplies: Used in dual-rail (±15V) configurations for amplifiers, DACs, and ADCs.
• Industrial Equipment: Provides reliable voltage regulation in control systems, motor drives, and instrumentation.
• Audio Systems: Ensures clean power delivery for high-fidelity audio amplifiers and preamps.
• Test & Measurement: Suitable for bench power supplies and precision measurement devices.
• Automotive Electronics: Operates reliably in harsh environments, though design validation is recommended.

Conclusion of L7915CD2T

The L7915CD2T stands out as a high-performance negative voltage regulator, combining high current output, low dropout, and robust protection in a compact D2PAK package. While marked as obsolete, its proven design makes it a dependable choice for legacy systems or designs requiring a -15V rail. Engineers seeking a reliable, industrial-grade regulator for analog or mixed-signal applications will find this device well-suited to their needs. For new designs, verifying alternative modern equivalents from STMicroelectronics is advised.