L7815CV: 15V 1.5A Linear Voltage Regulator by STMicroelectronics | Features & Applications
L7815CV: High-Performance 15V 1.5A Linear Voltage Regulator by STMicroelectronics
The L7815CV from STMicroelectronics is a premium fixed-output linear voltage regulator designed to deliver a stable 15V output at up to 1.5A current. As part of STMicroelectronics' renowned voltage regulator family, this IC combines robust performance with exceptional reliability, making it a top choice for engineers across industries. Below, we explore its technical specifications, advanced features, and diverse applications in detail.
In-Depth Technical Specifications
Output Characteristics
- Output Voltage: Fixed +15V ( 4% tolerance)
- Output Current: Up to 1.5A continuous
- Line Regulation: 0.03%/V (Typ)
- Load Regulation: 15mV (Typ at 1A)
Input Voltage Range and Efficiency
- Input Voltage Range: 17V (Min) to 35V (Max)
- Dropout Voltage: 2V (Max at 1A load)
- Quiescent Current: 8mA (Typ)
- Ripple Rejection: 54dB (120Hz)
Robust Protection Features
- Thermal Shutdown: Automatic cutoff at 150 C (Typ)
- Short Circuit Protection: Current limiting with foldback
- Safe Operating Area (SOA): Internal thermal protection
Thermal Performance
- Junction Temperature Range: -40 C to +125 C
- Thermal Resistance: 5 C/W (Junction-to-Case)
- Package: TO-220AB with exposed thermal pad
Advanced Features Explained
Precision Voltage Regulation
The L7815CV maintains 4% output accuracy across line and load variations, ensuring stable operation even with fluctuating input voltages or sudden current demands. Its internal bandgap reference provides excellent temperature stability.
Enhanced Thermal Management
The TO-220AB package features a metal tab that enables direct heatsink mounting, allowing for effective power dissipation up to 15W (with proper cooling). This makes the regulator ideal for high-temperature environments.
Noise Reduction Technology
With a 54dB PSRR at 120Hz, the L7815CV effectively suppresses input ripple, eliminating the need for additional filtering in most applications. The internal compensation network ensures stability with minimal external components.
Comprehensive Application Guide
Industrial Applications
- PLC power supplies
- Motor control circuits
- Factory automation systems
- Test and measurement equipment
Automotive Electronics
- ECU power modules
- Infotainment systems
- LED lighting drivers
- Sensor interfaces
Consumer Electronics
- Audio amplifiers
- Set-top boxes
- Gaming consoles
- Home automation controllers
Design Considerations
- Always maintain 17V input for proper regulation
- Use 0.33 F (min) ceramic input capacitor
- Include 0.1 F output capacitor for stability
- For >500mA loads, heatsinking is mandatory
Competitive Advantages
| Feature | L7815CV | Generic Competitors |
|---|---|---|
| Output Accuracy | 4% | 5-10% |
| Protection Features | Thermal + Short Circuit | Basic thermal only |
| Operating Temp | -40 C to +125 C | 0 C to +125 C |
Purchasing Information
The L7815CV is available through authorized distributors worldwide. Bulk pricing options are available for production quantities. STMicroelectronics provides full technical documentation including:
- Detailed datasheets
- SPICE models
- Application notes
- Reference designs
For engineers seeking alternatives, STMicroelectronics offers the L78M15CV (500mA) and L78S15CV (2A) in the same series.
Conclusion
The L7815CV represents the gold standard in 15V linear regulators, combining STMicroelectronics' manufacturing excellence with proven three-terminal regulator topology. Its robust design, comprehensive protection features, and wide operating range make it the ideal choice for mission-critical applications where reliability cannot be compromised.
For design support or to request samples, contact STMicroelectronics' technical support team or visit their official website. When your application demands uncompromising power quality, the L7815CV delivers.