Overview
The LD1117V33 is a low drop-out linear voltage regulator produced by STMicroelectronics. This regulator is part of the LD1117 series, which is known for its high performance and reliability. The LD1117V33 provides a fixed output voltage of 3.3V and can supply up to 800mA of continuous current, with a peak surge capability of 1.3A. It is particularly useful in applications where a stable and efficient voltage regulation is required, such as in communications equipment, computers, and personal electronics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (Max) | 15 | V |
| Output Voltage (Fixed) | 3.3 | V |
| Dropout Voltage (Max) | 1.2 | V |
| Output Current (Max) | 800 | mA |
| Rated Power | 12 | W |
| Tolerance | ±1% (at 25°C), ±2% (full temperature range) | % |
| Operating Temperature Range | 0°C to 125°C | °C |
| Regulator Topology | Fixed | |
| Quiescent Current | 5mA | mA |
| No. of Outputs | Single | |
| Output Noise | 100µV | µV |
| Line Regulation | 1mV | mV |
| Load Regulation | 1mV | mV |
| Package Style | TO-220-3 (TO-220AB) | |
| Mounting Method | Through Hole |
Key Features
- Low Dropout Voltage: The LD1117V33 has a low dropout voltage of 1V, making it efficient for use in systems where the input voltage is close to the output voltage.
- High Output Current: It can provide up to 800mA of continuous current and has a peak surge capability of 1.3A.
- Fixed Output Voltage: The regulator offers a fixed output voltage of 3.3V with tight tolerance, within ±1% at 25°C and ±2% over the full temperature range.
- Internal Current and Thermal Limit: The device includes internal current limiting and over-temperature protection, ensuring robust operation.
- Supply Voltage Rejection: It has a high supply voltage rejection of 75dB, ensuring stable output voltage despite input voltage variations.
- Package Options: Available in TO-220 package, which is suitable for through-hole mounting.
- Operating Temperature Range: The regulator operates over a wide temperature range from 0°C to 125°C.
Applications
The LD1117V33 is suitable for a variety of applications where stable and efficient voltage regulation is necessary. Some common applications include:
- Communications Equipment: Used in devices such as modems, routers, and other communication hardware.
- Computers and Peripherals: Ideal for use in computer systems, printers, and other peripheral devices.
- Personal Electronics: Found in devices like smartphones, tablets, and other portable electronics.
- Industrial Equipment: Used in various industrial control systems and automation devices.
Q & A
- What is the maximum input voltage for the LD1117V33?
The maximum input voltage for the LD1117V33 is 15V.
- What is the fixed output voltage of the LD1117V33?
The fixed output voltage of the LD1117V33 is 3.3V.
- What is the maximum output current of the LD1117V33?
The maximum output current of the LD1117V33 is 800mA.
- What is the dropout voltage of the LD1117V33?
The dropout voltage of the LD1117V33 is 1.2V.
- What is the operating temperature range of the LD1117V33?
The operating temperature range of the LD1117V33 is from 0°C to 125°C.
- Does the LD1117V33 have internal current and thermal protection?
Yes, the LD1117V33 includes internal current limiting and over-temperature protection.
- What package style is the LD1117V33 available in?
The LD1117V33 is available in the TO-220-3 (TO-220AB) package.
- What is the quiescent current of the LD1117V33?
The quiescent current of the LD1117V33 is 5mA.
- What is the output noise voltage of the LD1117V33?
The output noise voltage of the LD1117V33 is 100µV.
- What is the supply voltage rejection of the LD1117V33?
The supply voltage rejection of the LD1117V33 is 75dB.
