REG1117FA-1.8KTTT
1.8V fixed output low dropout voltage regulators with 1A capacity
Manufacturer： ['rochester', 'ti']
series introduction
# Introduction to the REG1117FA - 1.8KTTT Product Series
## 1. Overview
The REG1117FA - 1.8KTTT belongs to a specialized family of voltage regulators. Voltage regulators are crucial components in electronic circuits as they ensure a stable output voltage regardless of variations in the input voltage or changes in the load current. This particular product series is designed to meet the demanding requirements of modern electronic devices, offering high - performance voltage regulation in a compact and efficient package.
## 2. Key Features
### 2.1 Fixed Output Voltage
The "1.8" in the product name indicates that the REG1117FA - 1.8KTTT provides a fixed output voltage of 1.8V. This precise output voltage is ideal for powering a wide range of integrated circuits (ICs) such as microcontrollers, digital signal processors (DSPs), and other low - voltage components that require a stable 1.8V power supply to operate correctly.
### 2.2 Low Dropout Voltage
One of the significant features of this voltage regulator 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 REG1117FA - 1.8KTTT has a relatively low dropout voltage, which means it can operate efficiently even when the input voltage is only slightly higher than the output voltage. This is particularly useful in battery - powered applications where the battery voltage decreases over time. For example, in a system powered by a single lithium - ion battery, which has a nominal voltage of 3.7V and can discharge down to around 3V, the low dropout voltage of the REG1117FA - 1.8KTTT allows it to continue providing a stable 1.8V output until the battery voltage drops to a very low level.
### 2.3 High Output Current Capability
It is capable of delivering a relatively high output current. This makes it suitable for powering multiple components simultaneously or components that have a relatively high power consumption. The high - current capability ensures that the regulator can handle the load requirements of various electronic devices without experiencing significant voltage drops or overheating issues.
### 2.4 Thermal Overload Protection
To prevent damage to the device due to excessive heat, the REG1117FA - 1.8KTTT 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 enhances the reliability and longevity of the product, especially in applications where the regulator may be exposed to high - temperature environments or operate under heavy load conditions.
### 2.5 Short - Circuit Protection
Short - circuit protection is another important safety feature of this product series. In the event of a short - circuit at the output, the regulator automatically limits the output current to a safe level, preventing damage to the regulator and other components in the circuit. This protection mechanism helps to ensure the overall stability and safety of the electronic system.
## 3. Package and Pin Configuration
### 3.1 Package Type
The "KTTT" in the product name refers to the specific package type of the REG1117FA - 1.8KTTT. This package is designed to provide good thermal performance and mechanical stability. It is also suitable for surface - mount technology (SMT) assembly, which is widely used in modern printed circuit board (PCB) manufacturing processes. The compact size of the package allows for efficient use of PCB space, making it ideal for applications where space is limited, such as in mobile devices and portable electronics.
### 3.2 Pin Configuration
The regulator typically
Images for reference
TO-263-3, TS3B
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