A Quick Dive into LM1117MP Voltage Regulators

 


The LM1117MP is a series of low dropout voltage regulators with a fixed output energy of 3.3V. These regulators are part of the LM1117 family, which is known for its high performance and reliability. The "NOPB" in the part number indicates that these regulators are lead-free and comply with the Restriction of Hazardous Substances (RoHS) directive.

 

Technical Specifications

Output Voltage: 3.3V

Dropout Voltage: 1.2V (typical) at 800mA load current

Output Current: Up to 800mA

Input Current Range: 4.2V to 15V

Line Regulation: 0.2% (typical)

Load Regulation: 0.4% (typical)

Operating Temperature Range: -40°C to 125°C

Package: SOT-223

 

Benefits and Advantages

Stable Output Voltage: It provides a stable 3.3V output current, ensuring reliable operation of connected circuits.

Low Dropout Voltage: With a dropout current of just 1.2V at 800mA load current, it minimizes power dissipation and improves efficiency.

Thermal Shutdown Protection: The regulator includes thermal shutdown protection, which prevents it from overheating under high load conditions, enhancing its reliability.

Easy to Use: It is easy to use and requires minimal external components, simplifying the design process.

 

Comparison with Other Regulators

When compared to other regulators on the market, this stands out due to its combination of features, performance, and reliability. Here are a few main facts of comparison:

Efficiency: It offers little dropout current and high efficiency, making it suitable for battery-powered applications where power efficiency is critical.

Size and Package: Its SOT-223 package is compact and easy to mount, making it suitable for space-constrained designs.

Temperature Range: It operates over a wide temperature range, making it suitable for use in harsh environments.

Price: It is competitively priced compared to other power regulators with similar features and performance.


Use in Power Management Circuits for Consumer Electronics

This regulator is commonly used in power management circuits for various consumer electronics applications, including:

Mobile Devices: It can be used to regulate the energy for the microcontroller, display, and other components in smartphones and tablets.

Portable Audio Players: It can provide a stable power supply for audio amplifiers and digital-to-analog converters in portable audio players.

Digital Cameras: This can be used to adjust the current for the image sensor, LCD display, and other components in digital cameras.

Gaming Consoles: It can be used to control the power of the processor, graphics chip, and memory in gaming consoles.

 

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