LD1117ASTR

Current - Output:	1A
Base Part Number:	LD1117A
Supplier Device Package:	SOT-223
Package / Case:	TO-261-4, TO-261AA
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	80dB (120Hz)
Current - Quiescent (Iq):	5mA
Series:	--
Voltage Dropout (Max):	1.3V @ 1A
Voltage - Output (Max):	15V
Voltage - Output (Min/Fixed):	1.25V
Voltage - Input (Max):	15V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LD1117ASTR Application Field and Working Principle

PMIC (Power Management Integrated Circuit) is a semiconductor component that manages the power in an electronic system. Voltage regulators are one of the most important elements in PMIC. Electronic systems require an output voltage to maintain the system\'s efficiency and performance. Voltage regulators are designed to regulate the output voltage and ensure the system is working correctly. LD1117ASTR is an example of a linear voltage regulator, which is a type of voltage regulator that is widely used in many applications. This article will discuss the application field and working principle of LD1117ASTR.LD1117ASTR is an adjustable and low-dropout linear voltage regulator. It is manufactured by STMicroelectronics and is available in the form of DIP, SOT89 and SOT−223 packages. The device has a maximal input voltage range of 8 V to 40 V and allows for adjustable output voltage from 1.25 V to 37 V. In addition, the device offers low quiescent current, fast response times and high current output, making it ideal for applications that require voltage accuracy and fast transient response.The LD1117ASTR operating principle is based on the classic feedback loop utilized in linear voltage regulators. The device regulates the output voltage by sensing the voltage level of the output. If the voltage level is higher than the desired value, the device will reduce the output current, and vice versa. In order to maintain the output voltage, a feedback loop is used to compare the output voltage with a reference voltage. The error signal of the comparison will be amplified and fed to the inverting input of the regulator. When the negative feedback loop is closed, the output voltage will be adjusted to the desired value.LD1117ASTR has a wide range of applications. It is widely used in telecom, industrial, and consumer applications, such as power supplies, battery-powered systems and other circuits requiring adjustable output voltages. Moreover, this device is suitable for small size, low cost, and low power applications.To summarize, LD1117ASTR is a low-dropout linear voltage regulator with an adjustable and wide range of input and output voltages. The device uses a feedback loop to compare the output voltage with a reference voltage in order to maintain the output voltage at the desired value. LD1117ASTR has been widely used in many applications due to its fast response times, high current output, and low quiescent current.

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