Overview
The MC78L15ABD is a member of the MC78L00A series of positive voltage regulators produced by onsemi. These regulators are designed to be inexpensive, easy to use, and suitable for a wide range of applications that require a regulated voltage output. The MC78L15ABD specifically provides a fixed output voltage of 15 volts and is capable of delivering up to 100 mA of current.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = +25°C) | 14.4 | 15 | 15.6 | Vdc |
| Line Regulation (TJ = +25°C, IO = 40 mA) | - | - | 130 | mV |
| Load Regulation (TJ = +25°C, 1.0 mA ≤ IO ≤ 100 mA) | - | - | 100 | mV |
| Ripple Rejection (IO = 40 mA, f = 120 Hz, 18.5 V ≤ VI ≤ 28.5 V, TJ = +25°C) | 34 | 39 | - | dB |
| Dropout Voltage (TJ = +25°C) | - | - | 1.7 | Vdc |
| Input Bias Current (TJ = +25°C) | - | - | 6.5 | mA |
| Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) | - | - | 150 | μV |
Key Features
- Fixed Output Voltage: The MC78L15ABD provides a fixed output voltage of 15 volts, making it suitable for applications requiring a stable voltage supply.
- High Current Capability: It can deliver up to 100 mA of current, which is adequate for many low to medium current applications.
- Low Dropout Voltage: The dropout voltage is typically 1.7 volts, which is relatively low and efficient for many applications.
- Good Line and Load Regulation: The regulator has good line and load regulation, ensuring that the output voltage remains stable over a range of input voltages and load currents.
- High Ripple Rejection: It offers high ripple rejection, typically 34 to 39 dB, which helps in filtering out noise from the input voltage.
- Low Noise Operation: The output noise voltage is relatively low, typically 150 μV, making it suitable for noise-sensitive applications.
Applications
- Consumer Electronics: Suitable for use in various consumer electronics such as audio equipment, home appliances, and other devices requiring a stable voltage supply.
- Industrial Control Systems: Can be used in industrial control systems, automation, and monitoring devices where a reliable voltage regulator is necessary.
- Medical Devices: Applicable in medical devices that require a stable and regulated voltage supply.
- Automotive Systems: Can be used in automotive systems for powering various components that require a regulated voltage.
- General Purpose Power Supplies: Suitable for use in general-purpose power supplies where a fixed output voltage is required.
Q & A
- What is the output voltage of the MC78L15ABD?
The output voltage of the MC78L15ABD is 15 volts.
- What is the maximum current that the MC78L15ABD can deliver?
The MC78L15ABD can deliver up to 100 mA of current.
- What is the typical dropout voltage of the MC78L15ABD?
The typical dropout voltage is 1.7 volts.
- How good is the line regulation of the MC78L15ABD?
The line regulation is typically up to 130 mV.
- What is the ripple rejection of the MC78L15ABD?
The ripple rejection is typically between 34 to 39 dB.
- What is the output noise voltage of the MC78L15ABD?
The output noise voltage is typically 150 μV.
- What are some common applications of the MC78L15ABD?
Common applications include consumer electronics, industrial control systems, medical devices, automotive systems, and general-purpose power supplies.
- What is the operating temperature range of the MC78L15ABD?
The operating temperature range is from 0°C to +125°C for the MC78LXXAC version and from -40°C to +125°C for the MC78LXXAB version.
- What type of capacitors are recommended for use with the MC78L15ABD?
It is recommended to use 1 μF input and 1 μF output ceramic capacitors.
- Is the MC78L15ABD suitable for noise-sensitive applications?
Yes, it is suitable due to its low output noise voltage and high ripple rejection.
