LM317DCYR

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LM317DCYR

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IC REG LIN POS ADJ 1.5A SOT223-4

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Attribut Wert
Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
OutputConfiguration Positive
OutputType Adjustable
NumberofRegulators 1
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 1.25V
Voltage-Output(Max) 37V
Current-Output 1.5A
PSRR 64dB ~ 57dB (120Hz)
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature 0°C ~ 125°C
MountingType Surface Mount
Package/Case TO-261-4, TO-261AA

Übersicht

Description

The LM317DCYR is a popular adjustable voltage regulator integrated circuit (IC) used to provide a stable variable output voltage. It is part of the LM317 family and is known for its versatility and ease of use in various electronic applications. The device can output voltages ranging from 1.25V to 37V, provided the input voltage is at least 3V higher than the desired output voltage. It can deliver an output current of up to 1.5A, making it suitable for moderate power applications.
The LM317DCYR features built-in current limiting, thermal overload protection, and safe area compensation, enhancing reliability and safety in designs. The "DCYR" in its name refers to its specific package type, which is the TO-252 (DPAK) surface-mount package, facilitating easy integration into modern printed circuit boards (PCBs).
By using only two external resistors, users can set the output voltage to their desired level. This simplicity, combined with its robust performance, makes the LM317DCYR a widely used component in power supply circuits and adjustable voltage applications.

Equivalent

The LM317DCYR is a voltage regulator commonly used for adjustable output voltage applications. Equivalent products include:
1. LM317T: Another variant of the LM317 series.
2. L78S: Similar adjustable voltage regulator.
3. L200: Offers similar functionality with additional features.
4. MIC29150: Offers higher current capabilities.
5. TLV1117: Lower dropout voltage alternative.
These equivalents vary in packaging, current output, and dropout voltage, so it's important to consider the specific application requirements.

Features

The LM317DCYR is a versatile, adjustable linear voltage regulator. Key features include:
1. Adjustable Output Voltage: It provides an output voltage range from 1.25V to 37V, allowing for flexibility in various applications.

2. Output Current: It can deliver up to 1.5A of load current, suitable for moderate power applications.
3. Thermal Regulation: The device includes thermal overload protection to prevent overheating, ensuring reliable operation.
4. Short-Circuit Protection: It features current limiting for short-circuit protection, enhancing safety and durability.
5. Line and Load Regulation: It offers excellent line and load regulation, maintaining stable output with changes in input voltage or load current.
6. Dropout Voltage: The LM317DCYR has a dropout voltage of approximately 3V, meaning it requires a minimum of 3V higher input than the desired output voltage.
7. Package Type: It comes in a surface-mount SOT-223 package, which is compact and suitable for space-constrained designs.
These features make the LM317DCYR ideal for applications needing a reliable, adjustable power supply.

Pinout

The LM317DCYR is a voltage regulator IC with a 3-pin configuration. It is designed to provide an adjustable output voltage. The functions of the pins are as follows:
1. Input (Vin): This pin is connected to the unregulated input voltage. The LM317 can accept an input voltage of up to 40 volts.
2. Output (Vout): This pin provides the regulated output voltage, which can be adjusted from 1.25V to around 37V using external resistor networks.
3. Adjust (Adj): This pin is used to adjust the output voltage. A voltage divider is typically connected between the output and adjust pin to set the desired output voltage.
The LM317 is commonly used in power supply applications where a stable and adjustable output voltage is required.

Manufacturer

The LM317DCYR is manufactured by Texas Instruments. Texas Instruments, commonly known as TI, is an American technology company headquartered in Dallas, Texas. It specializes in designing and manufacturing semiconductors and various integrated circuits, which are sold to electronics designers and manufacturers globally. Texas Instruments is well-known for its extensive portfolio of products, including analog chips, digital signal processors, microcontrollers, and the DLP technology used in projectors. The company plays a significant role in the electronics industry by providing components that power a wide range of electronic devices across multiple sectors, such as consumer electronics, automotive, industrial equipment, and communications.

Application

The LM317DCYR is a versatile adjustable voltage regulator commonly used in various applications. These include power supply design, where it provides a stable output voltage ranging from 1.25V to 37V with an input voltage up to 40V. It's used in battery chargers, variable power supplies, and LED drivers due to its adjustable output. The LM317DCYR is also employed in low-voltage applications, such as microcontroller power supplies, and audio equipment for noise reduction. Its thermal overload protection, short-circuit protection, and current-limiting features make it suitable for consumer electronics, industrial automation, and communication equipment. The component is often used in DIY electronics projects due to its ease of use and flexibility.

Package

The LM317DCYR is a voltage regulator packaged in a SOT-223 form factor. This surface-mount package allows for efficient thermal performance and a compact size suitable for various electronic applications.

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