Overview
The MC78L05ACDX is a 3-terminal positive voltage regulator from ON Semiconductor, originally part of Fairchild Semiconductor. This device is designed to provide a stable output voltage of 5 volts with a maximum output current of 100 mA. It is suitable for applications requiring a regulated voltage supply with minimal external components. The regulator features thermal overload protection and short-circuit current limiting, ensuring reliable operation under various conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 4.75 | 5.0 | 5.25 | V |
| Maximum Output Current | 100 | mA | ||
| Input Voltage Range | 7 | 20 | V | |
| Line Regulation (TJ = 25°C, 10.5 V ≤ VI ≤ 23 V) | 175 | mV | ||
| Load Regulation (TJ = 25°C, 1 mA ≤ IO ≤ 100 mA) | 80 | mV | ||
| Quiescent Current (TJ = 25°C) | 2.0 | 5.5 | mA | |
| Output Noise Voltage (TA = 25°C, 10 Hz ≤ f ≤ 100 kHz) | 40 | μV/Vo | ||
| Ripple Rejection (f = 120 Hz, 10 V ≤ VI ≤ 20 V, TJ = 25°C) | 40 | 46 | dB | |
| Dropout Voltage (TJ = 25°C) | 1.7 | V | ||
| Operating Temperature Range | -40 | 125 | °C | |
| Package Type | 8-SOIC |
Key Features
- Maximum Output Current: Up to 100 mA, making it suitable for a variety of low to moderate current applications.
- Output Voltage: Fixed output voltage of 5 volts with ±5% tolerance.
- Thermal Overload Protection: Protects the device from overheating.
- Short-Circuit Current Limiting: Prevents damage from short circuits.
- Low Dropout Voltage: 1.7 volts at TJ = 25°C.
- High Ripple Rejection: Up to 46 dB at 120 Hz.
- Compact Package Options: Available in 8-SOIC, TO-92, and SOT-89 packages.
Applications
The MC78L05ACDX is versatile and can be used in various applications requiring a stable 5V voltage supply. These include:
- Consumer Electronics: Such as audio equipment, calculators, and other portable devices.
- Industrial Control Systems: For powering sensors, actuators, and other control circuitry.
- Medical Devices: Where a stable and regulated voltage is crucial.
- Automotive Systems: For powering accessories and subsystems.
- Embedded Systems: In microcontroller-based projects and IoT devices.
Q & A
- What is the output voltage of the MC78L05ACDX?
The output voltage is 5 volts with a ±5% tolerance. - What is the maximum output current of the MC78L05ACDX?
The maximum output current is 100 mA. - What are the package options for the MC78L05ACDX?
The device is available in 8-SOIC, TO-92, and SOT-89 packages. - Does the MC78L05ACDX have thermal overload protection?
Yes, it includes thermal overload protection. - What is the dropout voltage of the MC78L05ACDX?
The dropout voltage is 1.7 volts at TJ = 25°C. - What is the ripple rejection of the MC78L05ACDX?
The ripple rejection is up to 46 dB at 120 Hz. - What is the operating temperature range of the MC78L05ACDX?
The operating temperature range is -40°C to +125°C. - Is the MC78L05ACDX suitable for high-current applications?
No, it is designed for applications requiring up to 100 mA. - Does the MC78L05ACDX require external components for operation?
No, it is a 3-terminal regulator and does not require external components for basic operation. - What are some common applications of the MC78L05ACDX?
Common applications include consumer electronics, industrial control systems, medical devices, automotive systems, and embedded systems.
