Overview
The MC7805ACT is a monolithic integrated circuit designed as a fixed-voltage regulator, produced by onsemi. This device is part of the MC78XX series and is specifically tailored for applications requiring a stable 5V output voltage. The MC7805ACT is known for its high current capability, internal current limiting, thermal shutdown, and safe-area compensation, making it suitable for a wide range of applications including local, on-card regulation.
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 | - | 1.3 | 25 | mV |
| Quiescent Current | IB | - | 3.2 | 6.5 | mA |
| Dropout Voltage (IO = 1.0 A, TJ = 25°C) | VI - VO | - | - | 2.0 | Vdc |
| Short Circuit Current Limit (TA = 25°C) | ISC | - | - | 0.2 | A |
| Peak Output Current (TJ = 25°C) | Imax | - | - | 2.2 | A |
| Average Temperature Coefficient of Output Voltage | TCVO | - | -0.3 | - | mV/°C |
Key Features
- Output current in excess of 1.0 A with adequate heatsinking.
- No external components required for operation.
- Internal current limiting and thermal shutdown for protection.
- Safe-area compensation to prevent current limiting under low voltage conditions.
- High ripple rejection ratio (typically 68 dB at 120 Hz).
- Low output noise voltage (typically 10 μV/√Hz).
- Low dropout voltage (typically 2.0 V at IO = 1.0 A).
Applications
- Local, on-card voltage regulation in various electronic systems.
- Power supplies for electronic equipment requiring a stable 5V output.
- Embedded systems and microcontroller-based projects.
- Automotive and industrial control systems.
- Adjustable voltage and current applications with external components.
Q & A
- What is the typical output voltage of the MC7805ACT?
The typical output voltage of the MC7805ACT is 5.0 Vdc.
- What is the maximum output current the MC7805ACT can deliver?
The MC7805ACT can deliver an output current in excess of 1.0 A with adequate heatsinking.
- Does the MC7805ACT require any external components for operation?
No, the MC7805ACT does not require any external components for operation.
- What are the protection features of the MC7805ACT?
The MC7805ACT features internal current limiting and thermal shutdown for protection.
- What is the dropout voltage of the MC7805ACT?
The dropout voltage of the MC7805ACT is typically 2.0 V at IO = 1.0 A.
- What is the ripple rejection ratio of the MC7805ACT?
The ripple rejection ratio of the MC7805ACT is typically 68 dB at 120 Hz.
- What is the quiescent current of the MC7805ACT?
The quiescent current of the MC7805ACT is typically 3.2 mA.
- What is the short circuit current limit of the MC7805ACT?
The short circuit current limit of the MC7805ACT is typically 0.2 A.
- What are some common applications of the MC7805ACT?
The MC7805ACT is commonly used in local, on-card voltage regulation, power supplies, embedded systems, and automotive and industrial control systems.
- Can the MC7805ACT be used to obtain adjustable voltages and currents?
Yes, the MC7805ACT can be used with external components to obtain adjustable voltages and currents.
