LM1117MPX-5.0
Compact 5V LDO voltage regulators with 800mA output in SOT-223 package
Manufacturer： ['national-semiconductor', 'rochester', 'chipswinner', 'ti']
series introduction
# Introduction to the LM1117MPX - 5.0 Product Series
## 1. Overview
The LM1117MPX - 5.0 is a part of a highly reliable and widely - used voltage regulator product series. Voltage regulators are essential components in electronic circuits as they ensure a stable output voltage regardless of variations in the input voltage or load current. The LM1117MPX - 5.0 is specifically designed to provide a fixed output voltage of 5.0 volts, making it suitable for a vast array of electronic applications.
## 2. Key Features
### 2.1 Low Dropout Voltage
One of the most significant features of the LM1117MPX - 5.0 is its low dropout voltage. Dropout voltage is the minimum difference between the input voltage and the output voltage required for the regulator to maintain a stable output. The LM1117MPX - 5.0 typically has a low dropout voltage, which means it can operate effectively even when the input voltage is only slightly higher than the 5 - volt output. This is particularly useful in battery - powered applications where the battery voltage gradually decreases over time. For example, in a portable device powered by a single lithium - ion battery (which has a nominal voltage of 3.7V and can reach up to 4.2V when fully charged), the low dropout voltage allows the regulator to provide a stable 5V output for as long as possible, maximizing the battery's useful life.
### 2.2 High Output Current Capability
This voltage regulator can supply a relatively high output current. It is capable of delivering up to a certain specified current (usually in the range of hundreds of milliamperes), which makes it suitable for powering a variety of components such as microcontrollers, sensors, and small - scale integrated circuits. For instance, in a simple IoT sensor node, the LM1117MPX - 5.0 can provide enough power to run the microcontroller, the sensor module, and the communication interface simultaneously.
### 2.3 Excellent Line and Load Regulation
Line regulation refers to the ability of the regulator to maintain a constant output voltage when the input voltage changes. Load regulation, on the other hand, is the regulator's ability to keep the output voltage stable when the load current varies. The LM1117MPX - 5.0 offers excellent line and load regulation characteristics. This ensures that the 5 - volt output remains within a very narrow tolerance range, even when there are fluctuations in the input voltage due to power supply variations or changes in the load current as components are turned on or off in the circuit.
### 2.4 Thermal Overload Protection
To prevent damage to the regulator and the connected components, the LM1117MPX - 5.0 is equipped with thermal overload protection. When the temperature of the regulator exceeds a certain threshold, the thermal protection circuit kicks in and reduces the output current or shuts down the regulator temporarily. This feature helps to ensure the long - term reliability of the device, especially in applications where the regulator may be subjected to high ambient temperatures or high power dissipation.
### 2.5 Short - Circuit Protection
In case of a short - circuit in the output circuit, the LM1117MPX - 5.0 has built - in short - circuit protection. It can limit the output current to a safe level, preventing excessive current flow that could damage the regulator and other components in the circuit. This protection mechanism enhances the safety and durability of the overall electronic system.
## 3. Package and Pin Configuration
The LM1117MPX - 5.0 is available in a specific package, which is designed for easy integration into printed circuit boards (PCBs). The package provides good thermal
Images for reference
SOT223-3L
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