Overview
The onsemi MC33269DT-3.3G is a low dropout (LDO) linear voltage regulator designed for use in low input voltage applications. This device is part of the MC33269 series, which offers fixed and adjustable output voltage options. The MC33269DT-3.3G specifically provides a fixed output voltage of 3.3V and is capable of delivering an output current in excess of 800 mA. It features a space-saving DPAK package and is suitable for applications requiring precision voltage regulation with minimal power losses.
Key Specifications
| Specification | Value |
|---|---|
| Regulator Type | Low Dropout Voltage |
| Maximum Output Current | 800 mA |
| Number of Outputs | 1 |
| Output Voltage | 3.3 V |
| Line Regulation | 0.3 % |
| Load Regulation | 0.5 % |
| Accuracy | ±1% |
| Mounting Type | Surface Mount |
| Polarity | Positive |
| Quiescent Current | 5.5 mA |
| Package Type | DPAK |
| Pin Count | 3 |
| Output Type | Fixed |
| Dimensions | 6.73 x 6.22 x 2.38 mm |
| Minimum Operating Temperature | -40 °C |
| Maximum Input Voltage | 20 V |
| Maximum Operating Temperature | +125 °C |
| Dropout Voltage (Iout = 800 mA) | 1.1 V |
| Ripple Rejection (10 Vpp, 120 Hz Sinewave; Iout = 500 mA) | 55 dB |
| Current Limit (Vin - Vout = 10 V) | 800 mA |
Key Features
- Low dropout voltage of 1.0 V, reducing power losses
- Output current in excess of 800 mA
- Thermal protection and short circuit protection
- Output voltage trimmed to 1.0% tolerance
- Space-saving DPAK, SO-8, and SOT-223 power packages
- Internal protective features include current limiting and thermal shutdown
- Requires an external output capacitor for stability (at least 10 µF with ESR < 10 Ω)
Applications
The MC33269DT-3.3G is suitable for a variety of applications requiring precise voltage regulation with low input voltages. These include:
- Battery-backed power supplies
- Digitally controlled voltage regulators
- Current regulators
- Low-power electronic devices where space is a constraint
- Automotive and industrial systems requiring reliable voltage regulation
Q & A
- What is the output voltage of the MC33269DT-3.3G?
The output voltage of the MC33269DT-3.3G is 3.3 V.
- What is the maximum output current of the MC33269DT-3.3G?
The maximum output current is in excess of 800 mA.
- What is the dropout voltage of the MC33269DT-3.3G at 800 mA output current?
The dropout voltage at 800 mA output current is 1.1 V.
- Does the MC33269DT-3.3G have thermal protection?
- What type of package does the MC33269DT-3.3G come in?
The MC33269DT-3.3G comes in a DPAK package.
- What is the operating temperature range of the MC33269DT-3.3G?
The operating temperature range is from -40 °C to +125 °C.
- Is the MC33269DT-3.3G Pb-free?
- What is the ripple rejection of the MC33269DT-3.3G?
The ripple rejection is 55 dB at 120 Hz with a 10 Vpp sinewave and 500 mA output current.
- Does the MC33269DT-3.3G require an external capacitor for stability?
- What are some common applications for the MC33269DT-3.3G?
