7905 TO-220-3 Linear Voltage Regulator

7905 Negative Linear Voltage Regulator – Fixed -5V Power Supply IC
The 7905 series negative linear voltage regulator is designed to provide stable and reliable negative voltage regulation for analog circuits, dual-supply systems, audio electronics, instrumentation, and embedded power applications. Delivering a fixed -5V output with up to 500mA current capability, the regulator features good ripple rejection, stable load regulation, and reliable thermal performance for professional and educational electronic designs.

Why it’s a System Essential:
• Fixed Negative Voltage Output: Provides stable -5V regulation for dual-supply and analog systems.
• Medium Current Capability: Supports up to 500mA output current for embedded and analog applications.
• Good Ripple Rejection: 66dB PSRR improves power supply noise filtering performance.
• Stable Regulation Characteristics: Maintains output stability under varying line and load conditions.
• Reliable Thermal Operation: Supports operation over a wide industrial temperature range.
• Suitable for Analog Electronics: Commonly used in op-amp circuits, audio systems, and instrumentation.
• Simplified Negative Power Supply Design: Easy implementation for dual-voltage systems.

Technical Specifications:
• Product Type: Linear Voltage Regulator
• Product Series: 7905
• Polarity: Negative
• Number of Outputs: 1
• Output Type: Fixed

Electrical Specifications:
• Output Voltage: -5V
• Output Current: 500mA
• Minimum Supply Voltage: -7V
• Maximum Operating Current: 5mA

Regulation Performance:
• PSRR / Ripple Rejection: 66dB
• Load Regulation: 100mV
• Line Regulation: 50mV

Environmental Specifications:
• Operating Temperature Range: -20°C to +120°C

Mechanical Dimensions:
• Dimensions (L × W × H): 10.28mm × 4.82mm × 9.28mm

Features:
• Fixed negative voltage regulation
• Reliable ripple rejection performance
• Stable load and line regulation
• Suitable for analog and dual-supply systems
• Compact regulator implementation
• Reliable thermal characteristics

Applications:
• Dual power supply circuits
• Analog electronic systems
• Audio amplifier circuits
• Operational amplifier power supplies
• Instrumentation electronics
• Industrial automation systems
• Embedded analog applications
• Educational electronics projects
• DIY regulated power supplies

Best For:
Ideal for students, hobbyists, makers, engineers, and analog electronics developers working on dual-supply circuits, audio electronics, instrumentation systems, embedded analog applications, and regulated negative voltage power supplies requiring stable -5V output performance.