Overview
The MC78M12CDT is a 3-terminal positive voltage regulator from Onsemi, part of the MC78M00 series. This regulator is designed to provide a stable output voltage of 12 volts with a maximum output current of 500 mA. It is compatible with the popular MC7800 series devices but offers specific characteristics tailored for various applications. The MC78M12CDT is available in several package types, including the HSIP (Heatsink TO-220) package, which enhances thermal dissipation and reliability.
Key Specifications
| Characteristics | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 11.50 | 11.76 | 12.00 | Vdc |
| Output Voltage Variation (14.5 Vdc ≤ VI ≤ 27 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 11.40 | - | 12.60 | Vdc |
| Line Regulation (TJ = 25°C, 14.5 Vdc ≤ VI ≤ 30 Vdc, IO = 200 mA) | Regline | - | 8.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | Regload | - | - | 25 | mV |
| Dropout Voltage (TJ = 25°C) | VI−VO | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | IOS | - | 350 | - | mA |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | ΔVO/ΔT | - | ±0.2 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | IO | - | 700 | - | mA |
Key Features
- Stable Output Voltage: Provides a stable output voltage of 12 volts with minimal variation over a range of input voltages and output currents.
- High Current Capability: Can deliver up to 500 mA of output current, making it suitable for a variety of applications requiring stable power.
- Low Dropout Voltage: Features a dropout voltage of 2.0 Vdc, ensuring efficient operation even when the input voltage is close to the output voltage.
- Short Circuit Protection: Includes a short circuit current limit of 350 mA to protect the regulator from overcurrent conditions.
- Thermal Stability: Available in the HSIP package, which enhances thermal dissipation and reliability.
- Wide Operating Temperature Range: Operates over a temperature range of 0°C to 125°C, making it suitable for various environmental conditions.
Applications
- Power Supplies: Ideal for use in power supply units where a stable 12V output is required.
- Industrial Control Systems: Suitable for industrial control systems, automation, and robotics where reliable voltage regulation is crucial.
- Consumer Electronics: Used in consumer electronics such as audio equipment, medical devices, and other applications requiring stable DC power.
- Automotive Systems: Can be used in automotive systems where a stable voltage is necessary for various components.
- Embedded Systems: Applicable in embedded systems and IoT devices that require a reliable and stable power source.
Q & A
- What is the output voltage of the MC78M12CDT regulator?
The output voltage of the MC78M12CDT regulator is 12 volts.
- What is the maximum output current of the MC78M12CDT?
The maximum output current of the MC78M12CDT is 500 mA.
- What is the dropout voltage of the MC78M12CDT?
The dropout voltage of the MC78M12CDT is 2.0 Vdc.
- Does the MC78M12CDT have short circuit protection?
Yes, the MC78M12CDT includes a short circuit current limit of 350 mA.
- What is the operating temperature range of the MC78M12CDT?
The operating temperature range of the MC78M12CDT is 0°C to 125°C.
- What package types are available for the MC78M12CDT?
The MC78M12CDT is available in the HSIP (Heatsink TO-220) package among others.
- What are some common applications of the MC78M12CDT?
The MC78M12CDT is commonly used in power supplies, industrial control systems, consumer electronics, automotive systems, and embedded systems.
- How does the MC78M12CDT ensure thermal stability?
The MC78M12CDT ensures thermal stability through its HSIP package, which enhances thermal dissipation.
- What is the line regulation of the MC78M12CDT?
The line regulation of the MC78M12CDT is 8.0 mV (typical) over the specified input voltage range.
- What is the load regulation of the MC78M12CDT?
The load regulation of the MC78M12CDT is 25 mV (typical) over the specified output current range.
