Overview
The onsemi MC33269DT-012 is a low dropout (LDO) linear voltage regulator designed for precision voltage regulation in low input voltage applications. This device is part of the MC33269/NCV33269 series, which offers fixed and adjustable output voltage options. The MC33269DT-012 specifically provides a fixed output voltage of 12 V. It is packaged in a space-saving DPAK (TO-252) package, making it suitable for a variety of applications where compact design is crucial.
This regulator features a 1.0 V dropout composite PNP-NPN pass transistor, along with current limiting and thermal shutdown, ensuring reliable operation under various conditions. It is designed to minimize power losses while providing high precision voltage regulation.
Key Specifications
| Attribute | Value |
|---|---|
| Regulator Type | Low Dropout Voltage |
| Maximum Output Current | 800 mA |
| Output Voltage | 12 V |
| Number of Outputs | 1 |
| Line Regulation | 0.3 % |
| Accuracy | ±1% |
| Load Regulation | 0.5 % |
| Mounting Type | Surface Mount |
| Polarity | Positive |
| Package Type | DPAK (TO-252) |
| Quiescent Current | 5.5 mA |
| Pin Count | 3 |
| Output Type | Fixed |
| Dimensions | 6.73 x 6.22 x 2.38 mm |
| Maximum Operating Temperature | +125 °C |
| Minimum Operating Temperature | -40 °C |
| Maximum Input Voltage | 20 V |
| Dropout Voltage | 1.0 V (typical at 800 mA) |
Key Features
- Low Dropout Voltage: The regulator operates with a typical dropout voltage of less than 1.0 V, making it suitable for low input voltage applications.
- High Output Current: Capable of delivering an output current in excess of 800 mA.
- Thermal and Short Circuit Protection: Internal protective features include thermal shutdown and short circuit protection to ensure device reliability.
- High Precision Output: Output voltage is trimmed to 1.0% tolerance, ensuring high precision voltage regulation.
- Space-Saving Package: Available in DPAK, SO-8, and SOT-223 power packages, which are compact and suitable for various applications.
- Adjustable Output Versions: Although the MC33269DT-012 is a fixed output version, the series also includes adjustable output versions for greater flexibility.
- AEC-Q100 Qualified: The NCV prefix versions are AEC-Q100 qualified, making them suitable for automotive and other applications requiring unique site and control change requirements.
Applications
The onsemi MC33269DT-012 is versatile and can be used in a variety of applications, including:
- Low Input Voltage Systems: Ideal for systems where the input voltage is close to the required output voltage.
- Portable Electronics: Suitable for battery-powered devices due to its low dropout voltage and high efficiency.
- Automotive Systems: The NCV prefix versions are AEC-Q100 qualified, making them suitable for automotive applications.
- Industrial Control Systems: Can be used in industrial control systems that require precise voltage regulation.
- Battery-Backed Power Supplies: Can be used in battery-backed power supplies to ensure stable output voltage during power transitions.
Q & A
- What is the maximum output current of the MC33269DT-012?
The maximum output current is 800 mA.
- What is the output voltage of the MC33269DT-012?
The output voltage is fixed at 12 V.
- What is the typical dropout voltage of the MC33269DT-012?
The typical dropout voltage is less than 1.0 V.
- Does the MC33269DT-012 have thermal protection?
- What is the operating temperature range of the MC33269DT-012?
The operating temperature range is from -40 °C to +125 °C.
- What type of package does the MC33269DT-012 come in?
- Is the MC33269DT-012 AEC-Q100 qualified?
The NCV prefix versions are AEC-Q100 qualified, but the MC33269DT-012 itself is not specifically mentioned as AEC-Q100 qualified.
- What is the quiescent current of the MC33269DT-012?
The quiescent current is 5.5 mA.
- Does the MC33269DT-012 require external capacitors for stability?
- Can the MC33269DT-012 be used in automotive applications?
