Overview
The MC33269D-3.3G is a low dropout (LDO) linear voltage regulator produced by onsemi. This device is part of the MC33269 series, which is designed for use in low input voltage applications, offering precision voltage regulation while minimizing power losses. The MC33269D-3.3G is specifically configured to provide a fixed output voltage of 3.3V with a maximum output current of 800 mA. It is housed in an 8-pin SOIC N rail package, making it suitable for surface mount applications.
This regulator features a composite PNP-NPN pass transistor, current limiting, and thermal shutdown protection, ensuring reliable operation under various conditions. It is compliant with EU RoHS and has an ECCN classification of EAR99, indicating it is not subject to significant export restrictions.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Output Voltage | 3.3 | V |
| Output Current | 0.8 (Typ) | A |
| Input Voltage Range | Up to 20 | V |
| Dropout Voltage (Iout = 500 mA) | 1.25 | V |
| Dropout Voltage (Iout = 800 mA) | 1.35 | V |
| Line Regulation | 0.3% | |
| Load Regulation | 0.5% | |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | SOIC N Rail | |
| Lead Shape | Gull-wing | |
| Thermal Resistance (Junction to Ambient) | 160°C/W | |
| Current Limit | 800 mA | |
| Quiescent Current | 5.5 - 8.0 mA |
Key Features
- Low Dropout Voltage: The MC33269D-3.3G has a dropout voltage of 1.25V at 500mA and 1.35V at 800mA, making it suitable for low input voltage applications.
- High Accuracy: The output voltage is trimmed to ±1% tolerance, ensuring precise voltage regulation.
- Thermal and Short Circuit Protection: The device includes thermal shutdown and short circuit protection to prevent damage under adverse conditions.
- Space-Saving Package: The SOIC N rail package is compact and suitable for surface mount applications.
- High Ripple Rejection: The regulator has a ripple rejection of 55 dB at 120 Hz, ensuring stable output voltage.
- Compliance and Certifications: The device is EU RoHS compliant and has an ECCN classification of EAR99.
Applications
The MC33269D-3.3G is versatile and can be used in various applications requiring precise voltage regulation, 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.
- Industrial Control Systems: Can be used in industrial control systems that require stable and precise voltage regulation.
- Automotive Systems (Non-Automotive Version): Although not AEC-Q100 qualified, it can still be used in non-critical automotive applications or other systems requiring similar specifications.
Q & A
- What is the output voltage of the MC33269D-3.3G?
The output voltage of the MC33269D-3.3G is 3.3V.
- What is the maximum output current of the MC33269D-3.3G?
The maximum output current is 800 mA.
- What is the dropout voltage at 500 mA and 800 mA?
The dropout voltage is 1.25V at 500 mA and 1.35V at 800 mA.
- Does the MC33269D-3.3G have thermal protection?
- What is the operating temperature range of the MC33269D-3.3G?
The operating temperature range is -40°C to 125°C.
- What is the package type of the MC33269D-3.3G?
The package type is SOIC N Rail.
- Is the MC33269D-3.3G EU RoHS compliant?
- What is the ECCN classification of the MC33269D-3.3G?
The ECCN classification is EAR99.
- What is the ripple rejection of the MC33269D-3.3G?
The ripple rejection is 55 dB at 120 Hz.
- Does the MC33269D-3.3G have short circuit protection?
