Overview
The MC7808BTG is a member of the MC7800 Series of positive linear voltage regulators produced by onsemi. These regulators are monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of applications, including local, on-card regulation. The MC7808BTG specifically provides a fixed output voltage of 8 volts.
These devices are known for their robust features such as internal current limiting, thermal shutdown, and safe-area compensation, making them reliable for high-current applications. With adequate heatsinking, they can deliver output currents in excess of 1.0 A.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 7.84 | 8.0 | 8.16 | Vdc |
| Output Current | - | 1.0 | - | A |
| Input Voltage Range | 10.5 | - | 23 | Vdc |
| Line Regulation (TJ = 25°C) | - | - | 10 | mV |
| Load Regulation | - | - | 12 | mV |
| Quiescent Current (Iq) | - | 8 | - | mA |
| Power Supply Rejection Ratio (PSRR) at 120Hz | - | 62 | - | dB |
| Temperature Range | -40 | - | 125 | °C |
| Package Type | - | TO-220 | - | - |
Key Features
- Internal Current Limiting: Protects the device from overcurrent conditions.
- Thermal Shutdown: Automatically shuts down the device in case of overheating.
- Safe-Area Compensation: Ensures the output transistor operates within a safe area to prevent damage.
- No External Components Required: Simplifies the design and reduces the need for additional components.
- High Output Current: Can deliver output currents in excess of 1.0 A with adequate heatsinking.
- Pb-Free Packages Available: Compliant with lead-free regulations.
- Fixed Output Voltage: Provides a stable 8V output voltage.
Applications
- Local, On-Card Regulation: Ideal for regulating voltage in various electronic circuits on the same card or board.
- Industrial Control Systems: Used in control systems that require stable voltage supplies.
- Consumer Electronics: Suitable for use in a wide range of consumer electronic devices.
- Automotive Systems: Available in automotive versions (NCV7800 series) for use in vehicle electronics.
Q & A
- What is the output voltage of the MC7808BTG?
The output voltage of the MC7808BTG is 8 volts.
- What is the maximum output current of the MC7808BTG?
The MC7808BTG can deliver an output current in excess of 1.0 A with adequate heatsinking.
- What are the key protection features of the MC7808BTG?
The key protection features include internal current limiting and thermal shutdown.
- What is the temperature range for the MC7808BTG?
The temperature range for the MC7808BTG is -40°C to +125°C.
- Does the MC7808BTG require external components for operation?
No, the MC7808BTG does not require external components for operation.
- What is the quiescent current (Iq) of the MC7808BTG?
The quiescent current (Iq) of the MC7808BTG is typically 8 mA.
- What is the Power Supply Rejection Ratio (PSRR) of the MC7808BTG at 120Hz?
The PSRR of the MC7808BTG at 120Hz is 62 dB.
- In what package types is the MC7808BTG available?
The MC7808BTG is available in the TO-220 package type.
- Is the MC7808BTG lead-free?
Yes, the MC7808BTG is available in lead-free packages.
- What are some common applications of the MC7808BTG?
The MC7808BTG is commonly used in local, on-card regulation, industrial control systems, consumer electronics, and automotive systems.
