Overview
The MC7805CDT is a fixed-voltage regulator from onsemi, designed to provide a stable 5V output voltage. This monolithic integrated circuit is part of the 78XX series and is suitable for a wide range of applications, including local and on-card voltage regulation. The device features internal current limiting, thermal shutdown, and safe-area compensation, ensuring reliable operation under various conditions.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 4.8 | 5.0 | 5.2 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | VO | 4.75 | 5.0 | 5.25 | Vdc |
| Line Regulation (7.5 Vdc ≤ Vin ≤ 20 Vdc, IO = 1.0 A) | Regline | - | 0.5 | 1.3 | mV |
| Load Regulation (5.0 mA ≤ IO ≤ 1.0 A) | Regload | - | 0.15 | 1.3 | mV |
| Quiescent Current | IB | 3.2 | - | 8.0 | mA |
| Peak Output Current (TJ = 25°C) | Imax | - | - | 2.2 | A |
| Average Temperature Coefficient of Output Voltage | TCVO | - | -0.3 | - | mV/°C |
| Short Circuit Current Limit (TA = 25°C) | ISC | - | - | 0.2 | A |
| Dropout Voltage (IO = 1.0 A, TJ = 25°C) | VI - VO | - | - | 2.0 | V |
Key Features
- High Output Current: The MC7805CDT can deliver output currents in excess of 1.0 A with adequate heatsinking.
- Internal Current Limiting: The device includes internal current limiting to prevent damage from overcurrent conditions.
- Thermal Shutdown: Thermal shutdown protection is integrated to protect the device from overheating.
- Safe-Area Compensation: Ensures safe operation by preventing the device from entering into a region where it could be damaged.
- No External Components Required: The regulator can operate without external components, simplifying the design process.
- Adjustable Voltage and Current Capability: Can be used with external components to obtain adjustable voltages and currents.
Applications
- Local and On-Card Regulation: Ideal for providing stable voltage regulation on PCBs and in local power supply systems.
- Industrial Control Systems: Used in various industrial control systems where stable voltage is crucial.
- Consumer Electronics: Suitable for use in consumer electronics such as audio equipment, video devices, and other electronic appliances.
- Automotive Systems: Can be used in automotive systems where reliable voltage regulation is necessary.
Q & A
- What is the output voltage of the MC7805CDT?
The output voltage of the MC7805CDT is 5V, with a tolerance of 4.8V to 5.2V at TJ = 25°C.
- What is the maximum output current of the MC7805CDT?
The MC7805CDT can deliver output currents in excess of 1.0 A with adequate heatsinking.
- Does the MC7805CDT require external components to operate?
No, the MC7805CDT can operate without external components, but it can also be used with external components to obtain adjustable voltages and currents.
- What are the key protection features of the MC7805CDT?
The device includes internal current limiting, thermal shutdown, and safe-area compensation.
- What is the dropout voltage of the MC7805CDT?
The dropout voltage of the MC7805CDT is 2.0V at IO = 1.0 A and TJ = 25°C.
- What is the quiescent current of the MC7805CDT?
The quiescent current of the MC7805CDT is typically 3.2 mA to 8.0 mA.
- How does the MC7805CDT handle short circuit conditions?
The device has a short circuit current limit of 0.2 A at TA = 25°C.
- What is the average temperature coefficient of output voltage for the MC7805CDT?
The average temperature coefficient of output voltage is -0.3 mV/°C.
- What are some common applications of the MC7805CDT?
The MC7805CDT is commonly used in local and on-card regulation, industrial control systems, consumer electronics, and automotive systems.
- How does the MC7805CDT handle line and load regulation?
The device has specified line and load regulation characteristics, ensuring stable output voltage over a range of input voltages and output currents.
