Overview
The MC33269D-012 is a low dropout, medium current, adjustable output voltage regulator produced by onsemi. This device is specifically designed for use in low input voltage applications, offering an economical solution for precision voltage regulation while minimizing power losses. The regulator features a 1.0 V dropout composite PNP-NPN pass transistor, current limiting, and thermal shutdown, making it suitable for a variety of applications requiring stable and efficient voltage regulation.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (Iout = 10 mA, TA = 25°C) | VO | 3.27 (3.3V Suffix) | 3.465 (3.5V Suffix) | 3.33 (3.3V Suffix) | V |
| Output Voltage (Iout = 10 mA, TA = 25°C) | VO | 4.95 (5.0V Suffix) | 5.05 (5.0V Suffix) | 5.05 (5.0V Suffix) | V |
| Output Voltage (Iout = 10 mA, TA = 25°C) | VO | 11.88 (12V Suffix) | 12.12 (12V Suffix) | 12.12 (12V Suffix) | V |
| Dropout Voltage (Iout = 500 mA) | Vin - Vout | - | - | 1.0 | V |
| Dropout Voltage (Iout = 800 mA) | Vin - Vout | - | - | 1.1 | V |
| Output Current | Iout | - | - | 800 | mA |
| Minimum Required Load Current | ILoad | - | - | 8.0 | mA |
| Adjustment Pin Current | IAdj | - | - | 120 | µA |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Storage Temperature | Tstg | -55 | - | 150 | °C |
Key Features
- Low dropout voltage of 1.0 V, with a typical dropout voltage of less than 1.0 V
- Output current in excess of 800 mA
- Thermal protection and short circuit protection
- Output trimmed to 1.0% tolerance
- Space-saving DPAK, SO-8, and SOT-223 power packages
- Adjustable output voltage versions available
- NCV prefix for automotive and other applications requiring unique site and control change requirements (AEC-Q100 compliant)
Applications
The MC33269D-012 is suitable for various applications requiring stable and efficient voltage regulation, including:
- Low input voltage applications
- Battery-backed power supplies
- Digitally controlled voltage regulators
- Automotive and industrial systems requiring precision voltage regulation
Q & A
- What is the typical dropout voltage of the MC33269D-012?
The typical dropout voltage is less than 1.0 V.
- What is the maximum output current of the MC33269D-012?
The output current is in excess of 800 mA.
- What are the available output voltage versions for the MC33269D-012?
The device is available in 3.3 V, 3.5 V, 5.0 V, 12 V, and adjustable versions.
- What are the protective features of the MC33269D-012?
The device features thermal protection and short circuit protection.
- What is the recommended external output capacitor for stability?
The capacitor should be at least 10 µF with an equivalent series resistance (ESR) of less than 10 Ω but greater than 0.2 Ω.
- Is an input bypass capacitor recommended?
Yes, an input bypass capacitor is recommended to improve transient response or if the regulator is connected to the supply input filter with long wire lengths.
- What is the operating ambient temperature range of the MC33269D-012?
The operating ambient temperature range is -40°C to +125°C.
- What is the storage temperature range of the MC33269D-012?
The storage temperature range is -55°C to +150°C.
- Are there specific packaging options available for the MC33269D-012?
Yes, the device is available in DPAK, SO-8, and SOT-223 power packages.
- Is the MC33269D-012 suitable for automotive applications?
Yes, the NCV prefix version is AEC-Q100 compliant and suitable for automotive and other applications requiring unique site and control change requirements.
