Overview
The MC78M05ABDT is a part of the MC78M00/MC78M00A Series of positive voltage regulators produced by onsemi. These regulators are designed for local, on-card voltage regulation and are similar to the MC7800 Series but with half the output current. The MC78M05ABDT is specifically configured to provide a regulated output voltage of 5.0 V.
These devices are known for their ruggedness and reliability, featuring internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor. This makes them suitable for a wide range of applications requiring stable voltage regulation.
Key Specifications
| Characteristics | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 4.8 | 5.0 | 5.2 | Vdc |
| Output Voltage Variation (7.0 Vdc ≤ VI ≤ 20 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 4.9 | - | 5.1 | Vdc |
| Line Regulation (TJ = 25°C, 8.0 Vdc ≤ VI ≤ 25 Vdc, IO = 200 mA) | Regline | - | 5.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | Regload | - | - | 20 | 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) | �VO/�T | - | ±0.2 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | IO | - | 700 | - | mA |
Key Features
- No external components required for operation.
- Internal thermal overload protection and short circuit current limiting.
- Output transistor safe-area compensation.
- High accuracy output voltage (±2% for MC78M05AB models).
- ESD protection exceeding Human Body Model 2000 V per MIL-STD-883, Method 3015, and Machine Model 200 V.
Applications
The MC78M05ABDT is suitable for various applications requiring stable and regulated 5.0 V output voltage. These include:
- Local, on-card voltage regulation in electronic devices.
- Power supplies for embedded systems and microcontrollers.
- Automotive and industrial control systems where reliable voltage regulation is crucial.
- Consumer electronics requiring stable DC power.
Q & A
- What is the maximum output current of the MC78M05ABDT?
The maximum output current of the MC78M05ABDT is 500 mA with adequate heatsinking.
- What is the output voltage accuracy of the MC78M05ABDT?
The output voltage accuracy of the MC78M05ABDT is ±2%.
- Does the MC78M05ABDT require external components for operation?
No, the MC78M05ABDT does not require external components for operation.
- What is the dropout voltage of the MC78M05ABDT?
The dropout voltage of the MC78M05ABDT is 2.0 V.
- What is the short circuit current limit of the MC78M05ABDT?
The short circuit current limit of the MC78M05ABDT is 350 mA.
- What is the average temperature coefficient of output voltage for the MC78M05ABDT?
The average temperature coefficient of output voltage for the MC78M05ABDT is ±0.2 mV/°C.
- What is the peak output current of the MC78M05ABDT?
The peak output current of the MC78M05ABDT is 700 mA.
- Does the MC78M05ABDT have ESD protection?
- What are the typical operating temperature ranges for the MC78M05ABDT?
The typical operating temperature ranges for the MC78M05ABDT are from -40°C to +125°C.
- What are some common applications for the MC78M05ABDT?
The MC78M05ABDT is commonly used in local, on-card voltage regulation, power supplies for embedded systems, automotive and industrial control systems, and consumer electronics.
