Overview
The MC7808CTG 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 and on-card regulation. They are equipped with internal current limiting, thermal shutdown, and safe-area compensation, ensuring reliable operation. With adequate heatsinking, the MC7808CTG can deliver output currents in excess of 1.0 A. Although primarily designed as a fixed voltage regulator, it can also be used with external components to achieve adjustable voltages and currents.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 7.7 | 8.0 | 8.3 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | 7.6 | 8.0 | 8.4 | Vdc |
| Input Voltage Range | 10.5 | - | 23 | Vdc |
| Output Current | - | - | 1.0 | A |
| Line Regulation (TJ = 25°C) | - | - | 1.3 | mV |
| Load Regulation | - | - | 120 | mV |
| Dropout Voltage (IO = 1.0 A, TJ = 25°C) | - | - | 2.0 | Vdc |
| Output Noise Voltage (TA = 25°C) | - | - | 10 | μV/VO |
| Output Resistance (f = 1.0 kHz) | - | - | 0.9 | mΩ |
| Short Circuit Current Limit (TA = 25°C) | - | - | 0.2 | A |
| Average Temperature Coefficient of Output Voltage | - | - | -0.4 | mV/°C |
Key Features
- Fixed output voltage of 8V with an accuracy of ±1.5% at TJ = 25°C.
- Output current capability of up to 1.0 A.
- Internal current limiting and thermal shutdown for protection.
- Safe-area compensation to prevent output transistor failure.
- No external components required for operation.
- Available in TO-220 package, suitable for various mounting options.
- Automotive version available as NCV7800.
Applications
The MC7808CTG is suitable for a wide range of applications, including:
- Local and on-card voltage regulation.
- Power supplies for electronic equipment.
- Industrial control systems.
- Automotive systems (with the NCV7800 version).
- Consumer electronics.
Q & A
- What is the output voltage of the MC7808CTG?
The output voltage of the MC7808CTG is 8V with an accuracy of ±1.5% at TJ = 25°C. - What is the maximum output current of the MC7808CTG?
The maximum output current is up to 1.0 A. - What are the key protection features of the MC7808CTG?
The key protection features include internal current limiting, thermal shutdown, and safe-area compensation. - Does the MC7808CTG require external components for operation?
No, the MC7808CTG does not require external components for operation. - What package type is the MC7808CTG available in?
The MC7808CTG is available in the TO-220 package. - Is there an automotive version of the MC7808CTG?
Yes, the automotive version is available as the NCV7800. - What is the input voltage range for the MC7808CTG?
The input voltage range is from 10.5 Vdc to 23 Vdc. - What is the dropout voltage of the MC7808CTG?
The dropout voltage is 2.0 Vdc at IO = 1.0 A and TJ = 25°C. - How does the MC7808CTG handle thermal issues?
The MC7808CTG has thermal shutdown to protect against overheating. - Can the MC7808CTG be used for adjustable voltage regulation?
Yes, it can be used with external components to achieve adjustable voltages and currents.
