AS7805ADTR-G1: High-Performance 5V Linear Voltage Regulator | Diodes Incorporated
AS7805ADTR-G1: High-Performance 5V Linear Voltage Regulator by Diodes Incorporated
The AS7805ADTR-G1 from Diodes Incorporated represents the pinnacle of linear voltage regulation technology, delivering exceptional performance for 5V power supply applications. As part of their advanced power management IC portfolio, this regulator combines precision voltage control with robust protection mechanisms, making it a top choice for engineers worldwide.
Comprehensive Technical Specifications
Voltage Regulation Performance
This fixed 5V regulator maintains outstanding voltage accuracy of 2% across the full operating temperature range (-40 C to +125 C). The device features an ultra-low output noise of just 40 V RMS, making it particularly suitable for sensitive analog circuits and RF applications.
Enhanced Thermal Characteristics
The TO-252-3 (DPak) package delivers superior thermal performance with a junction-to-case thermal resistance of 5 C/W. When properly mounted with a heatsink, the regulator can dissipate up to 15W of power, enabling reliable operation even in high-temperature environments.
Advanced Protection Features
- Thermal Shutdown: Automatic cutoff at 150 C (typical) with 15 C hysteresis
- Current Limiting: Foldback protection limits short-circuit current to 300mA
- Safe Operating Area (SOA): Internal circuitry prevents thermal runaway
Detailed Application Guidelines
Input Capacitor Selection
For optimal performance, use a 0.33 F ceramic capacitor (X7R or better) placed within 1cm of the input pin. In high-noise environments, additional bulk capacitance (10-100 F electrolytic) may be required.
Output Capacitor Requirements
The regulator remains stable with just 0.1 F ceramic output capacitance, though 1 F is recommended for improved transient response. For applications with dynamic loads, parallel a 10 F tantalum or low-ESR electrolytic capacitor.
PCB Layout Considerations
- Keep input and output traces short and wide (minimum 50 mils)
- Place thermal vias under the package tab for improved heat dissipation
- Route sensitive analog grounds separately from power grounds
Industry-Leading Performance Metrics
| Parameter | Value | Conditions |
|---|---|---|
| Line Regulation | 10mV (max) | VI = 7V to 25V |
| Load Regulation | 15mV (max) | IO = 5mA to 1A |
| Ripple Rejection | 70dB | 120Hz |
| Dropout Voltage | 2V (typ) | IO = 1A |
Expanded Application Scenarios
Automotive Electronics
The AS7805ADTR-G1 meets AEC-Q100 Grade 1 requirements, making it suitable for automotive infotainment systems, instrument clusters, and ADAS components. Its wide operating temperature range ensures reliability in extreme vehicle environments.
Industrial Control Systems
For PLCs, motor controllers, and HMI panels, the regulator's high PSRR (70dB) effectively filters industrial power line noise. The robust construction withstands vibration and electrical interference common in factory settings.
IoT and Wearable Devices
With its low quiescent current (6mA typical) and excellent light-load efficiency, the AS7805ADTR-G1 extends battery life in smart sensors, fitness trackers, and wireless modules.
Competitive Advantage Analysis
Compared to conventional 7805 regulators, the AS7805ADTR-G1 offers:
- 30% lower dropout voltage for improved efficiency
- 50% better ripple rejection for cleaner power
- Wider operating temperature range (-40 C to +125 C)
- More compact TO-252-3 package versus traditional TO-220
Design Resources and Support
Diodes Incorporated provides comprehensive support materials:
- SPICE models for circuit simulation
- Reference designs for common applications
- Thermal calculation tools
- Application notes on PCB layout and EMI reduction
Purchasing Information
The AS7805ADTR-G1 is available through authorized distributors worldwide, with standard lead times of 8-12 weeks. Volume pricing starts at $0.35/unit for quantities above 1,000 pieces. Evaluation boards (part number AS7805ADTR-G1-EVK) are available for prototyping.
For engineers seeking a reliable, high-performance 5V regulator solution, the AS7805ADTR-G1 delivers exceptional value through its combination of precision regulation, robust protection features, and industry-leading thermal performance.