Overview
The MC33269T-5.0, produced by onsemi, is a low dropout, medium current, fixed output voltage regulator. 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, along with current limiting and thermal shutdown, making it suitable for a variety of applications requiring stable voltage regulation.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | Vout | 4.9 | 5.0 | 5.1 | V |
| Output Current | Iout | - | - | 800 | mA |
| Dropout Voltage | Vin - Vout | - | 1.0 | 1.25 | V (Iout = 500 mA) |
| Dropout Voltage | Vin - Vout | - | 1.1 | 1.35 | V (Iout = 800 mA) |
| Line Regulation | Regline | - | - | 0.3 | % (Iout = 10 mA, Vin = [Vout + 1.5 V] to Vin = 20 V, TJ = 25°C) |
| Load Regulation | Regload | - | - | 0.5 | % (Vin = Vout + 3.0 V, Iout = 10 mA to 800 mA, TJ = 25°C) |
| Ripple Rejection | RR | 55 | - | - | dB (10 Vpp, 120 Hz Sinewave; Iout = 500 mA) |
| Quiescent Current (Fixed Output) | IQ | - | 5.5 | 8.0 | mA |
| Adjustment Pin Current | IAdj | - | - | 120 | µA |
| Operating Temperature Range | TJ | -40 | - | 125 | °C |
| Package | - | - | - | TO-220, DPAK, SOP-8, SOT-223 | - |
Key Features
- Low dropout voltage of 1.0 V, ensuring efficient voltage regulation.
- Output current capability in excess of 800 mA.
- Thermal protection and short circuit protection for enhanced reliability.
- Output voltage trimmed to 1.0% tolerance for precision applications.
- No minimum load requirement for fixed voltage output devices.
- Space-saving packages including DPAK, SOP-8, and SOT-223.
- High ripple rejection of 55 dB at 120 Hz.
- Adjustable output voltage versions available.
Applications
The MC33269T-5.0 is suitable for a wide range of applications requiring stable and efficient voltage regulation, including:
- Low input voltage systems where power efficiency is crucial.
- Industrial control systems and automation.
- Consumer electronics requiring stable power supply.
- Telecommunication equipment and networking devices.
- Automotive systems where thermal and short circuit protection are essential.
Q & A
- What is the typical dropout voltage of the MC33269T-5.0?
The typical dropout voltage is 1.0 V for an output current of 500 mA and 1.1 V for an output current of 800 mA.
- What is the maximum output current of the MC33269T-5.0?
The maximum output current is in excess of 800 mA.
- What are the available package types for the MC33269T-5.0?
The available packages include TO-220, DPAK, SOP-8, and SOT-223.
- Does the MC33269T-5.0 have thermal protection?
- What is the ripple rejection of the MC33269T-5.0?
The ripple rejection is 55 dB at 120 Hz.
- Is there a minimum load requirement for the fixed voltage output devices?
No, there is no minimum load requirement for fixed voltage output devices).
- What is the operating temperature range of the MC33269T-5.0?
The operating temperature range is from -40°C to 125°C).
- What type of capacitors are recommended for stability?
An external output capacitor of at least 10 µF with an ESR of less than 10 Ω but greater than 0.2 Ω is recommended for stability).
- Does the MC33269T-5.0 have short circuit protection?
- What is the quiescent current of the MC33269T-5.0?
The quiescent current is typically 5.5 mA for fixed output devices).
