Overview
The MC7805BT is a linear voltage regulator produced by onsemi, designed to provide a stable 5V output voltage. This monolithic integrated circuit is part of the MC7800 series, which is widely used for various applications requiring fixed-voltage regulation. The MC7805BT is known for its reliability, simplicity, and robust performance under different operating conditions.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 4.9 | 5.0 | 5.1 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | 4.8 | 5.0 | 5.2 | Vdc |
| Line Regulation (7.5 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA) | - | 0.5 | 1.3 | mV |
| Load Regulation (5.0 mA ≤ IO ≤ 1.0 A) | - | 10 | 12 | mV |
| Dropout Voltage (TJ = 25°C) | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | - | 2.2 | - | A |
| Average Temperature Coefficient of Output Voltage | - | -0.3 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | - | 2.2 | - | A |
Key Features
- No external components required for operation.
- Internal thermal overload protection to prevent overheating.
- Internal short circuit current limiting to protect against overcurrent conditions.
- Output transistor safe-area compensation for enhanced reliability.
- High accuracy output voltage regulation.
- ESD protection exceeding Human Body Model 2000 V and Machine Model 200 V tests.
Applications
The MC7805BT is suitable for a wide range of applications, including:
- Local, on-card voltage regulation in electronic devices.
- Power supplies for consumer electronics, industrial equipment, and automotive systems.
- Embedded systems requiring stable voltage regulation.
- Battery-powered devices needing efficient voltage regulation.
Q & A
- What is the output voltage of the MC7805BT?
The output voltage of the MC7805BT is 5V, with a tolerance of 4.9V to 5.1V at TJ = 25°C.
- What is the maximum output current of the MC7805BT?
The maximum output current is 1A, with adequate heatsinking.
- Does the MC7805BT have internal thermal protection?
Yes, the MC7805BT features internal thermal overload protection to prevent overheating.
- Is the MC7805BT protected against short circuits?
Yes, it has internal short circuit current limiting to protect against overcurrent conditions).
- What is the dropout voltage of the MC7805BT?
The dropout voltage is 2.0V at TJ = 25°C).
- Does the MC7805BT require external components for operation?
No, the MC7805BT does not require external components for operation).
- What is the average temperature coefficient of output voltage for the MC7805BT?
The average temperature coefficient of output voltage is -0.3 mV/°C).
- Is the MC7805BT ESD protected?
Yes, the MC7805BT exceeds the Human Body Model 2000 V and Machine Model 200 V tests for ESD protection).
- What are the typical applications of the MC7805BT?
The MC7805BT is typically used in local, on-card voltage regulation, power supplies, embedded systems, and battery-powered devices).
- What is the operating temperature range of the MC7805BT?
The operating temperature range is from Tlow to 125°C, depending on the specific variant (e.g., MC78XXC, MC78XXAC, NCV78XX)).
