Overview
The LC1117CLTR18 is a low-dropout linear voltage regulator that provides a fixed 1.8V output. Designed for efficiency and reliability, it's widely used in power management applications where stable voltage is critical. The device operates with a very small voltage difference between input and output (dropout voltage), making it energy-efficient. Its compact SOT-223 package makes it suitable for space-constrained applications. The regulator includes built-in protection features such as thermal shutdown and current limiting, enhancing its durability in various operating conditions.
Structure and Working Principle
The LC1117CLTR18 consists of a reference voltage source, error amplifier, pass transistor, and feedback network. When the output voltage deviates from the set 1.8V value, the error amplifier adjusts the pass transistor to maintain regulation. The device requires only input and output capacitors for stable operation, simplifying circuit design. Its low quiescent current (typically 5mA) makes it suitable for battery-powered applications where power conservation is important.
Key Features
The LC1117CLTR18 offers several advantages: a low dropout voltage of about 1.1V at 800mA load, output accuracy of ±1%, and a wide operating temperature range (-40°C to 125°C). These features ensure reliable performance in demanding environments. Additional benefits include fast transient response to load changes and excellent line regulation. The device's 1% output voltage tolerance makes it suitable for precision applications where voltage stability is crucial.
Application Areas
This voltage regulator is commonly found in consumer electronics (smartphones, tablets), networking equipment, industrial control systems, and automotive electronics. Its reliability makes it ideal for applications requiring long-term stable operation. In embedded systems, the LC1117CLTR18 often powers microcontrollers, FPGAs, and other sensitive components. Its ability to maintain regulation with varying input voltages makes it valuable in systems with unstable power sources.
Maintenance and Precautions
Proper heat dissipation is essential when operating near maximum ratings. A heatsink may be required for high current applications. Input voltage should not exceed 15V to prevent damage. When designing circuits, place input and output capacitors as close to the regulator as possible. Use low-ESR capacitors for optimal performance. Avoid exposing the device to moisture or mechanical stress during handling and installation.
B2B Procurement Guide
When sourcing LC1117CLTR18 regulators, verify authenticity as counterfeit components are common. Reputable distributors typically offer quantity discounts, with prices decreasing significantly for orders above 1,000 units. Consider lead time and minimum order quantities when planning procurement. Some suppliers offer tape-and-reel packaging for automated assembly. For critical applications, request full datasheets and quality certifications from manufacturers.
Related Manufacturers
- 主营：MPS、ST、TOREX、NUVOTON、TI、BORN、SLKOR、YANGJIE、UTC、ADI、Infineon、Micron、SAMSUNG、TDK、MICROCHIP