LM317KCS

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LM317KCS

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IC REG LIN POS ADJ 1.5A TO220-3

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  • メーカー品番 #LM317KCS

  • データシート LM317KCS DataSheet

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仕様

属性
Part Status Active
Base Product Number LM317
Output Configuration Positive
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 1.25V
Voltage - Output (Max) 37V
Current - Output 1.5A
Current - Quiescent (Iq) 10 mA
PSRR 80dB ~ 65dB (120Hz)
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature 0°C ~ 125°C
Mounting Type Through Hole
Package TO-220-3
Supplier Device Package TO-220-3
Packaging Tube

概要

Description

The LM317KCS is a popular adjustable voltage regulator used in electronic circuits to provide a stable output voltage ranging from 1.25V to 37V with a maximum output current of 1.5A. Manufactured by various semiconductor companies, this device is part of the LM317 series, known for its versatility and ease of use in power supply applications.
The LM317KCS requires only two external resistors to set the output voltage, making it suitable for a wide range of applications. Additionally, it includes built-in current limiting, thermal overload protection, and safe area compensation, ensuring reliable performance under various conditions.
Packaged in a TO-220 or TO-263 form factor, the LM317KCS is designed for easy mounting and heat dissipation. It is ideal for use in DIY projects, powering microcontrollers, and any application requiring a regulated power supply with adjustable output voltage. Its robust design and reliability make it a staple in both hobbyist and professional electronic projects.

Equivalent

The LM317KCS is a voltage regulator IC. Equivalent products include the LM317 series from various manufacturers like Texas Instruments and STMicroelectronics. Other alternatives include the L78, LD1085, and KA317 series, which offer similar adjustable voltage regulation capabilities. Ensure to check the specific parameters like output current, voltage range, and package type when selecting an equivalent to match your application requirements.

Features

The LM317KCS is a popular adjustable voltage regulator that features a wide input voltage range of 3V to 40V and an adjustable output voltage from 1.25V to 37V, with a maximum output current of 1.5A. It boasts line and load regulation capabilities, typically 0.01% and 0.1%, respectively. The device includes features such as short-circuit protection, thermal overload protection, and safe area protection, ensuring reliability under various conditions. It requires only two external resistors to set the output voltage, making it versatile for numerous applications. Additionally, it has minimal output noise and offers a ripple rejection ratio typically around 80 dB. The LM317KCS is available in a TO-220 package, facilitating easy heat dissipation, and is widely used in power supply circuits where adjustable output voltage and robust performance are necessary.

Pinout

The LM317KCS is a versatile three-terminal adjustable voltage regulator. It is commonly used to provide a stable output voltage that can be adjusted over a wide range. The device typically comes in a TO-220 package, featuring three pins:
1. Input (VIN): This pin is where the unregulated input voltage is applied. The input voltage must be at least a few volts higher than the desired output voltage to maintain regulation.
2. Output (VOUT): This pin provides the regulated output voltage. The voltage at this pin is adjustable by varying the resistance between the adjustment pin and ground.
3. Adjustment (ADJ): This pin is used to set the output voltage. By connecting a resistor network between the adjustment pin, ground, and the output pin, users can adjust the voltage from 1.25V up to a maximum of approximately 37V, depending on the input voltage.
The LM317KCS is widely used for applications requiring adjustable voltage regulation, offering outputs in the range of 1.25V to 37V with a typical output current capability of up to 1.5A.

Manufacturer

The LM317KCS is a voltage regulator manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components. TI is well-known for its development, manufacturing, and commercialization of analog and embedded processing chips. They provide solutions for various applications in industries such as automotive, industrial, personal electronics, communications equipment, and enterprise systems. As a leader in the semiconductor industry, TI is recognized for its innovation in creating integrated circuits that enable advancements in technology across a wide spectrum of devices and systems.

Application

The LM317KCS is a versatile voltage regulator widely used for adjustable power supply applications. It is commonly found in:
1. Customizable DC power supplies, offering output voltage adjustments.
2. Battery chargers, providing controlled and stable charging voltages.
3. Post-regulation for switching power supplies, ensuring smooth output.
4. Voltage regulation in embedded systems, maintaining consistent voltage levels.
5. LED drivers, allowing for adjustable brightness control.
6. Current limiting circuits, protecting components from overcurrent.
7. Educational electronics projects, offering a practical example of voltage regulation.
Its ability to provide a wide range of output voltages with a simple circuit makes it ideal for prototyping and development in various electronics projects.

Package

The LM317KCS is typically available in a TO-220 package, which is a standard type of package used for power semiconductors. It features a three-pin configuration and is designed for easy mounting with a heat sink to dissipate heat efficiently.

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