Overview
The LM1117MP-3.3 is a low dropout (LDO) linear voltage regulator produced by National Semiconductor. It is designed to provide a fixed output voltage of 3.3V with a high level of accuracy and efficiency. This component is widely used in various electronic applications due to its compact size, reliable performance, and robust protection features. The LM1117MP-3.3 is particularly suitable for applications requiring stable voltage regulation in space-constrained environments.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 3.3 | V | Fixed |
| Output Current | 1 | A | Max |
| Input Voltage | 15 | V | Max |
| Dropout Voltage | 1.2 | V | @ 800mA |
| Output Accuracy | ±1 | % | |
| PSRR | 75 | dB | @ 120Hz |
| Quiescent Current | 5 | mA | |
| Operating Temperature | 0 to 125 | °C | |
| Package | SOT-223 | 3-Pin | |
| Protection Features | Overcurrent, Thermal Shutdown |
Key Features
- Fixed output voltage of 3.3V with ±1% accuracy.
- High output current capability of up to 1A.
- Low dropout voltage of 1.2V at 800mA.
- Built-in overcurrent and thermal shutdown protection.
- Compact SOT-223 package for space-constrained applications.
- High power supply rejection ratio (PSRR) of 75dB at 120Hz.
Applications
The LM1117MP-3.3 is commonly used in a variety of electronic systems, including consumer electronics, industrial control systems, and automotive applications. Its ability to provide stable voltage regulation makes it ideal for powering microcontrollers, sensors, and other low-power devices. Additionally, its compact size and robust protection features make it suitable for portable and battery-powered devices.
Q & A
1. What is the output voltage of the LM1117MP-3.3?
The LM1117MP-3.3 provides a fixed output voltage of 3.3V.
2. What is the maximum output current of this regulator?
The maximum output current is 1A.
3. What is the dropout voltage of the LM1117MP-3.3?
The dropout voltage is 1.2V at 800mA.
4. What are the protection features of this component?
It includes overcurrent and thermal shutdown protection.
5. What is the operating temperature range?
The operating temperature range is from 0°C to 125°C.
6. What package does the LM1117MP-3.3 come in?
It is available in a 3-pin SOT-223 package.
7. What is the PSRR of this regulator?
The power supply rejection ratio (PSRR) is 75dB at 120Hz.
8. Can this regulator be used in battery-powered devices?
Yes, its low dropout voltage and compact size make it suitable for battery-powered applications.
9. What is the quiescent current of the LM1117MP-3.3?
The quiescent current is 5mA.
10. Is the output voltage adjustable?
No, the LM1117MP-3.3 provides a fixed output voltage of 3.3V.
