NCP1117LPSTADT3G
Adjustable 1A low dropout voltage regulators in SOT-223 package
Manufacturer： onsemi
series introduction
# Introduction to the NCP1117LPSTADT3G Product Series
## 1. Overview
The NCP1117LPSTADT3G is a part of a highly reliable and efficient voltage regulator product series offered by ON Semiconductor. Voltage regulators are crucial components in electronic circuits as they ensure a stable and consistent output voltage, regardless of fluctuations in the input voltage or changes in the load current. This particular series is designed to meet the diverse power management needs of a wide range of applications, from consumer electronics to industrial equipment.
## 2. Key Features
### 2.1 Low Dropout Voltage
One of the standout features of the NCP1117LPSTADT3G is its low dropout voltage. Dropout voltage refers to the minimum difference between the input voltage and the output voltage required for the regulator to maintain a stable output. With a low dropout voltage, this regulator can operate effectively even when the input voltage is only slightly higher than the desired output voltage. This is especially useful in battery - powered applications, where the battery voltage gradually decreases over time. For example, in a portable device running on a single - cell lithium - ion battery, the low dropout voltage allows the regulator to continue providing a stable output as the battery discharges.
### 2.2 High Output Current Capability
The series is capable of delivering a relatively high output current. This makes it suitable for powering components that require a significant amount of power, such as microcontrollers, sensors, and small - scale integrated circuits. The ability to handle high currents ensures that the regulator can support the operation of multiple components simultaneously without experiencing voltage drops or instability.
### 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, while load regulation is about keeping the output voltage stable as the load current varies. The NCP1117LPSTADT3G offers excellent line and load regulation characteristics. This means that it can provide a precise and stable output voltage, even in the face of input voltage fluctuations caused by power supply variations or changes in the load due to the activation or deactivation of connected components.
### 2.4 Thermal Protection
To prevent damage from overheating, the NCP1117LPSTADT3G is equipped with thermal protection. When the temperature of the regulator exceeds a certain threshold, the thermal protection mechanism kicks in and reduces the output current or shuts down the regulator temporarily. This feature enhances the reliability and longevity of the device, especially in applications where the regulator may be exposed to high - temperature environments or when it is operating at high loads for extended periods.
### 2.5 Adjustable Output Voltage (in some variants)
Some models in the NCP1117LPSTADT3G series offer adjustable output voltage capabilities. This allows designers to fine - tune the output voltage according to the specific requirements of their application. By using external resistors, the output voltage can be set within a certain range, providing greater flexibility in circuit design.
## 3. Technical Specifications
### 3.1 Input Voltage Range
The NCP1117LPSTADT3G typically has a wide input voltage range. This range is carefully designed to accommodate different power sources, such as batteries, power adapters, or other regulated power supplies. For example, it may be able to accept input voltages from a few volts up to a relatively high value, depending on the specific model.
### 3.2 Output Voltage
The output voltage of the NCP1117LPSTADT3G can be fixed or adjustable. Fixed - output models are available with common voltage values such as 1.8V, 2.5V, 3.3V, etc., which are widely used in
Images for reference
SOT223-3L
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