Overview
The STMicroelectronics LDL1117S33R is a high-performance, low-dropout linear voltage regulator (LDO) from the LDL1117 series. This regulator is designed to provide a fixed output voltage of 3.3V with a maximum output current of 1.2A. It features a high power supply rejection ratio (PSRR) of 87dB at 120Hz, making it suitable for applications requiring stable voltage regulation. The LDL1117S33R is packaged in a SOT-223 (TO-261-4, SC-73) surface-mount package and operates over a wide temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage (Min) | 2.6V |
| Input Voltage (Max) | 18V |
| Output Voltage (Fixed) | 3.3V |
| Dropout Voltage (Max) | 0.6V |
| Output Current (Max) | 1.2A |
| Tolerance | ±2% |
| Operating Temperature Range | -40°C to +125°C |
| Regulator Topology | Fixed |
| Quiescent Current | 250µA |
| No. of Outputs | Single |
| Output Noise | 60µV |
| Load Regulation | 5mV |
| Current Limit | 2A |
| Line Regulation | 0.002% |
| Package Style | SOT-223 (TO-261-4, SC-73) |
| Mounting Method | Surface Mount |
Key Features
- High power supply rejection ratio (PSRR) of 87dB at 120Hz, ensuring stable voltage regulation.
- Low dropout voltage of 0.6V, allowing for efficient voltage regulation even at low input voltages.
- High output current capability of up to 1.2A, making it suitable for power-intensive applications.
- Wide operating temperature range of -40°C to +125°C, enhancing reliability in various environmental conditions.
- Single output channel with a fixed output voltage of 3.3V and ±2% tolerance, ensuring consistent voltage supply.
- Surface-mount SOT-223 package for easy integration into modern PCB designs.
Applications
The LDL1117S33R is versatile and can be used in a variety of applications requiring stable and efficient voltage regulation. Some common applications include:
- Power supplies for electronic devices, such as smartphones, tablets, and other portable electronics.
- Industrial control systems and automation equipment.
- Medical devices that require precise voltage regulation.
- Aerospace and automotive systems where reliability and stability are critical.
- Consumer electronics, such as set-top boxes, gaming consoles, and home appliances.
Q & A
- What is the output voltage of the LDL1117S33R?
The output voltage of the LDL1117S33R is fixed at 3.3V. - What is the maximum output current of the LDL1117S33R?
The maximum output current of the LDL1117S33R is 1.2A. - What is the input voltage range for the LDL1117S33R?
The input voltage range for the LDL1117S33R is from 2.6V to 18V. - What is the dropout voltage of the LDL1117S33R?
The dropout voltage of the LDL1117S33R is 0.6V. - What is the operating temperature range of the LDL1117S33R?
The operating temperature range of the LDL1117S33R is -40°C to +125°C. - What is the package style of the LDL1117S33R?
The LDL1117S33R is packaged in a SOT-223 (TO-261-4, SC-73) surface-mount package. - What is the quiescent current of the LDL1117S33R?
The quiescent current of the LDL1117S33R is 250µA. - What is the power supply rejection ratio (PSRR) of the LDL1117S33R?
The PSRR of the LDL1117S33R is 87dB at 120Hz. - Is the LDL1117S33R RoHS compliant?
Yes, the LDL1117S33R is RoHS compliant. - What are some common applications for the LDL1117S33R?
The LDL1117S33R is commonly used in power supplies, industrial control systems, medical devices, aerospace and automotive systems, and consumer electronics.
