Overview
The MC78M09BDTRKG is a part of the MC78M00/MC78M00A Series of positive linear voltage regulators produced by onsemi. These regulators are identical to the popular MC7800 Series devices but are specified for only half the output current, which is 500 mA. They are designed for local, on-card voltage regulation and feature internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, making them remarkably rugged under most operating conditions.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 8.64 | 9.0 | 9.45 | Vdc |
| Output Voltage Variation (11.5 Vdc ≤ VI ≤ 23 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | 8.55 | - | 9.45 | Vdc |
| Line Regulation (TJ = 25°C, 11.5 Vdc ≤ VI ≤ 25 Vdc, IO = 200 mA) | - | 6.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | - | - | 30 | mV |
| Dropout Voltage (TJ = 25°C) | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | - | 350 | - | mA |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | - | ±0.2 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | - | 700 | - | mA |
| Temperature Range | -40°C | - | +125°C | °C |
| Package | - | - | DPAK-3 (TO-252-2) | - |
Key Features
- No External Components Required
- Internal Thermal Overload Protection
- Internal Short Circuit Current Limiting
- Output Transistor Safe-Area Compensation
- High Accuracy (±2%) for MC78M00A versions
- Pb-Free Packages Available
- High Power Supply Rejection Ratio (PSRR)
Applications
The MC78M09BDTRKG is suitable for various applications requiring stable and regulated voltage. These include:
- Local, on-card voltage regulation in electronic devices
- Industrial control systems
- Automotive systems (NCV prefix versions)
- Consumer electronics requiring stable power supply
- Medical devices needing reliable voltage regulation
Q & A
- What is the maximum output current of the MC78M09BDTRKG?
The maximum output current is 500 mA with adequate heatsinking.
- What are the key protection features of the MC78M09BDTRKG?
It includes internal thermal overload protection, internal short circuit current limiting, and output transistor safe-area compensation.
- What is the output voltage tolerance for the MC78M09BDTRKG?
The output voltage tolerance is typically ±2% for the MC78M00A versions.
- What is the recommended input bypass capacitor for the MC78M09BDTRKG?
A 0.33 μF or larger tantalum, mylar, or other capacitor with low internal impedance at high frequencies is recommended.
- What is the temperature range for the MC78M09BDTRKG?
The temperature range is -40°C to +125°C.
- What package types are available for the MC78M09BDTRKG?
The regulator is available in DPAK-3 (TO-252-2) packages.
- What is the dropout voltage for the MC78M09BDTRKG?
The dropout voltage is 2.0 Vdc at TJ = 25°C.
- What is the average temperature coefficient of output voltage?
The average temperature coefficient of output voltage is ±0.2 mV/°C at IO = 5.0 mA.
- What is the peak output current for the MC78M09BDTRKG?
The peak output current is 700 mA at TJ = 25°C.
- Are Pb-Free packages available for the MC78M09BDTRKG?
