Copy of L7915CV negative Voltage Regulator (15V -1A)

Overview

The L7915CV is a fixed negative voltage regulator from the 79xx series, delivering a stable and reliable -15V output. Housed in the standard TO-220 package, it is capable of supplying up to 1A of current, making it a fundamental component for any circuit that requires a negative power rail. Whether you are building audio equipment, operational amplifier circuits, or mixed-signal systems, the L7915CV ensures your negative supply is clean and consistent.

Key Features

• Fixed Negative Output: Provides a precise -15V output without the need for external adjustment.
• 1A Output Current: Sufficient for powering a wide range of analog and mixed-signal circuits.
• Built-in Protections: Includes thermal shutdown and safe-area protection to safeguard the regulator and your project.
• Low Quiescent Current: Efficient operation with minimal power waste.
• Standard TO-220 Package: Easy to mount on heatsinks for thermal management.
• Dropout Voltage: Low dropout ensures stable operation even with moderate input voltage margins.

Technical Specifications

• Output Voltage: -15V (fixed)
• Output Current: 1A (max)
• Input Voltage Range: Typically -17.5V to -30V (absolute max -35V)
• Package: TO-220
• Dropout Voltage: Typically 2V (depending on load and temperature)
• Line Regulation: Typically 10mV
• Load Regulation: Typically 10mV
• Operating Temperature Range: 0°C to +125°C (storage), -40°C to +125°C (junction)

Applications & Use Cases

• Audio Amplifiers: Provides a clean negative rail for symmetric power supplies in hi-fi and professional audio gear.
• Operational Amplifier Circuits: Essential for dual-supply op-amp configurations, ensuring stable negative voltage.
• Analog Signal Processing: Powers ADCs, DACs, and other precision analog components requiring a negative reference.
• Power Supply Projects: Ideal for building bench power supplies with both positive and negative outputs.
• Robotics and Embedded Systems: Used in motor controllers and sensor interfaces that need a negative supply.
• Laboratory and Educational Use: Perfect for electronics labs and university projects exploring linear regulators.

What's Included

• 1x L7915CV Negative Voltage Regulator (TO-220)

Compatibility

• Complementary Positive Regulator: Pair with the L7815CV (or similar 7815) to create a symmetric ±15V power supply.
• Input Capacitors: Use a 0.33µF capacitor at the input for stability if the regulator is located far from the power supply filter.
• Output Capacitors: A 0.1µF capacitor at the output improves transient response.
• Heatsink: For currents above 0.5A, attach a suitable heatsink to the TO-220 tab to keep the junction temperature within safe limits.

MOKWN Recommendation

The L7915CV is a reliable, time-tested solution for generating a negative 15V rail. At MOKWN, we recommend this regulator for hobbyists and professionals alike who need consistent performance in audio, analog, and mixed-signal projects. Its TO-220 package is easy to work with, and with proper heat sinking, it will deliver years of dependable service. Add the L7915CV to your cart and ensure your dual-supply designs are rock solid.