LM1117DTX-ADJ

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LM1117DTX-ADJ

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IC REG LINEAR ADJ POS LDO REG

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Description

The LM1117DTX-ADJ is a low dropout voltage regulator from Texas Instruments, designed for applications requiring a stable and regulated output voltage. This adjustable version allows users to set the output voltage between 1.25V and 13.8V using an external resistor divider. It is part of the LM1117 series, which provides a maximum output current of 800mA and features a dropout voltage of approximately 1.2V at full load.
The device is designed for efficiency and reliability, including features such as thermal shutdown and current-limiting protection. Its typical quiescent current is considerably low, making it suitable for battery-operated devices. The LM1117DTX-ADJ comes in a TO-252 package, which is thermally efficient for power dissipation. It is widely used in various applications, including power management for microcontrollers, microprocessors, and other digital circuits. The regulator is known for its ease of use in both consumer electronics and industrial applications, where stable voltage supply is crucial.

Equivalent

The LM1117DTX-ADJ is a low-dropout linear voltage regulator. Equivalent products with similar characteristics include the AMS1117-ADJ, LD1117-ADJ, and TLV1117-ADJ. These alternatives provide adjustable output voltage, support similar current ratings, and have comparable dropout voltage specifications. Always verify compatibility in terms of package, pin configuration, and thermal characteristics before substituting.

Features

The LM1117DTX-ADJ is an adjustable voltage regulator from Texas Instruments. Key features include:
1. Adjustable Output: Provides an output voltage that can be set to a desired level using external resistors.
2. Output Current: Capable of sourcing up to 800 mA.
3. Low Dropout Voltage: Typically 1.2V, allowing for efficient voltage regulation even with a low input-output voltage differential.
4. Thermal Protection: Integrated thermal shutdown feature to prevent overheating.
5. Short-Circuit Protection: Safeguards the device in case of output short circuits.
6. Current Limiting: Includes current limiting to protect against excessive load.
7. Operating Temperature Range: Supports a wide range, typically from -40°C to 125°C, suitable for diverse applications.
8. Package Type: Available in a TO-252-3 package, which is compact and suitable for surface-mount applications.
9. Applications: Ideal for use in power management solutions in various electronics, including communication systems, industrial equipment, and consumer electronics.
These features make the LM1117DTX-ADJ a versatile choice for reliable voltage regulation in many applications.

Pinout

The LM1117DTX-ADJ is a voltage regulator with an adjustable output. It is typically available in a 3-pin package. Here are the pin functions:
1. Pin 1 (Adjust/Feedback): This pin is used to adjust the output voltage. By connecting a resistor divider network from this pin to the output and ground, the output voltage can be set to the desired level.
2. Pin 2 (Output): This is the regulated output voltage pin. The voltage level here can be adjusted using the feedback pin as mentioned above.
3. Pin 3 (Input): This pin receives the input voltage, which should be higher than the desired output voltage to ensure proper regulation.
The LM1117 series is known for providing a fixed 1.25V reference between the output and adjust pin, which is crucial for setting the output voltage accurately using external resistors.

Manufacturer

The LM1117DTX-ADJ is a voltage regulator manufactured by Texas Instruments. Texas Instruments, commonly referred to as TI, is an American technology company that specializes in designing and manufacturing semiconductors and various integrated circuits. Their products are used in a wide array of electronic applications, including industrial, automotive, personal electronics, and communications equipment. TI is known for its innovation in analog and embedded processing products and has a significant presence in the semiconductor industry globally.

Application

The LM1117DTX-ADJ is a low-dropout linear voltage regulator commonly used in various applications due to its adjustable output voltage and ease of use. Key application areas include:
1. Power Supply Regulation: Ensures stable output for microcontrollers and other digital circuits.
2. Embedded Systems: Supplies consistent power in compact, integrated systems.
3. Communication Equipment: Provides voltage regulation in networking and telecom devices.
4. Consumer Electronics: Used in gadgets like laptops and gaming consoles for reliable power.
5. Industrial Equipment: Offers voltage stability in automation and control systems.
These applications benefit from its efficiency, compact size, and reliable performance.

Package

The LM1117DTX-ADJ is a low dropout voltage regulator packaged in a DPAK (TO-252) form. The "DTX" indicates the package type as DPAK, which is a surface-mount package, while "ADJ" denotes that it is an adjustable version, allowing for different output voltages depending on the external resistor configuration.

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