AMS1117-ADJ

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AMS1117-ADJ

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IC REG LIN POS ADJ 1A SOT-223-3L

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Thông số kỹ thuật

thuộc tính Giá trị
Series AMS1117
PartStatus Active
OutputConfiguration Positive
OutputType Adjustable
NumberofRegulators 1
Voltage-Input(Max) 12V
Voltage-Output(Min/Fixed) 1.25V
Voltage-Output(Max) 10.7V
VoltageDropout(Max) 1.3V @ 1A
Current-Output 1A
Current-Quiescent(Iq) 10 mA
PSRR 75dB (120Hz)
ControlFeatures Current Limit
ProtectionFeatures Over Current, Over Temperature
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case TO-261-4, TO-261AA
SupplierDevicePackage SOT-223-3L

Tổng quan

Description

The AMS1117-ADJ is a popular adjustable voltage regulator from the AMS1117 series, designed to provide a stable output voltage for various electronic applications. It can deliver a current up to 1A with an input voltage range typically between 4.5V to 15V. The "ADJ" version allows the output voltage to be set through a pair of external resistors, providing a versatile solution for circuits requiring different voltage levels. The regulator features low dropout voltage, typically around 1V, making it efficient for applications with small differences between input and output voltages.
Key characteristics include thermal protection, current limit protection, and a high accuracy of output voltage regulation. The AMS1117-ADJ is commonly packaged in surface-mount formats like SOT-223, facilitating easy integration into compact PCB designs. It's widely used in consumer electronics, microcontroller applications, and other projects requiring reliable voltage regulation. Its simplicity, efficiency, and flexibility make it a favored choice for both hobbyists and professional electronics designers.

Equivalent

The AMS1117-ADJ is a popular adjustable low-dropout (LDO) voltage regulator. Equivalent products include:
1. LM1117-ADJ by Texas Instruments
2. LD1117-ADJ by STMicroelectronics
3. MIC39100 or MIC29302 by Microchip Technology
4. NCP1117-ADJ by ON Semiconductor
These alternatives offer similar specifications and performance, making them suitable replacements in most applications. Always verify pin compatibility and specific electrical characteristics before substitution.

Features

The AMS1117-ADJ is a popular adjustable linear voltage regulator. It offers the following features:
1. Adjustable Output Voltage: The output voltage can be set using two external resistors, typically ranging from 1.25V to 12V.
2. Low Dropout Voltage: It has a dropout voltage of approximately 1.1V at full load, which is relatively low and allows for efficient operation even when the input voltage is close to the desired output voltage.
3. Output Current: It can deliver up to 1A of output current, making it suitable for powering moderate load applications.
4. Thermal Protection: The AMS1117-ADJ includes thermal overload protection to prevent overheating, enhancing reliability.
5. Short-Circuit Protection: It also features short-circuit current limiting to safeguard against potential damage from output overloads.
6. Low Quiescent Current: This regulator operates with a low quiescent current, making it efficient in battery-powered applications.
7. Package Options: It is available in various package types, such as SOT-223, TO-220, and others, offering flexibility for different PCB designs.
These features make the AMS1117-ADJ a versatile choice for various electronic projects requiring stable voltage regulation.

Pinout

The AMS1117-ADJ is an adjustable low dropout voltage regulator. It typically comes in a 3-pin package, such as the SOT-223 or TO-252. Here is a brief overview of its pins and functions:
1. Pin 1 (ADJ/GND): This pin is used for adjustment to set the output voltage using external resistors. In fixed voltage versions of the AMS1117, this pin is labeled as GND.
2. Pin 2 (VOUT): This is the output pin where the regulated voltage is provided. The output voltage is set by the resistor divider connected between the ADJ pin and ground.
3. Pin 3 (VIN): This pin is the input supply voltage. It should be connected to the input power source, and the voltage must be higher than the desired output voltage by an amount equal to the dropout voltage of the regulator.
The AMS1117-ADJ is commonly used in applications requiring a stable and adjustable voltage supply with low dropout characteristics.

Manufacturer

The AMS1117-ADJ is a voltage regulator, and it is manufactured by a few different companies, as it is a popular component in the electronics industry. One of the primary manufacturers is Advanced Monolithic Systems (AMS), which is known for producing analog and mixed-signal integrated circuits. Another common manufacturer is Diodes Incorporated, a leading global manufacturer and supplier of high-quality application-specific standard products within the broad discrete, logic, analog, and mixed-signal semiconductor markets.
Both AMS and Diodes Incorporated cater to a wide range of industries, including consumer electronics, computing, communications, industrial, and automotive sectors. These companies focus on providing efficient power management solutions and other electronic components that are essential for various electronic applications.

Application

The AMS1117-ADJ is a low dropout voltage regulator commonly used in various applications. Its primary application areas include:
1. Microcontroller Power Supply: Provides stable power to microcontrollers in embedded systems.
2. Consumer Electronics: Powers devices like routers, set-top boxes, and cameras.
3. Networking Equipment: Used in modems and network interfaces for stable voltage regulation.
4. Battery-Powered Devices: Ensures efficient power management in portable devices.
5. Industrial Automation: Supports sensors and controllers in industrial environments.
6. Telecommunication Equipment: Stabilizes voltage in communication devices.
7. LED Drivers: Provides consistent power for LED lighting solutions.
The AMS1117-ADJ is valued for its adjustable output, low dropout voltage, and thermal protection features.

Package

The AMS1117-ADJ is typically available in a SOT-223 package. This package type is a surface-mount design, commonly used for voltage regulators like the AMS1117 series, providing a compact form factor suitable for various electronic applications.

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