LM317KCS

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LM317KCS

IC REG LIN POS ADJ 1.5A TO220-3

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Specifications

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

Overview

Description

The LM317KCS is a versatile and widely used adjustable voltage regulator that provides an output voltage range of 1.25V to 37V with a maximum output current of 1.5A. It is a three-terminal device designed for easy implementation in various power supply applications. The LM317KCS offers features such as current limiting, thermal overload protection, and safe area protection, which enhance its reliability and performance under different conditions.
The device is commonly used for regulating power supplies in electronic circuits due to its ability to adjust the voltage output through external resistors. This makes it suitable for applications requiring a stable and precise voltage output, like battery chargers, power adapters, and hobbyist projects.
The LM317KCS is available in a TO-220 package, which provides efficient heat dissipation. It is important to note that adequate heat sinking is necessary to maintain its functionality when operating at higher currents or input-output voltage differentials. Its ease of use, flexibility, and robust protection features make the LM317KCS a popular choice among engineers and electronic enthusiasts alike.

Features

The LM317KCS is a popular adjustable voltage regulator known for its versatility and ease of use. Key features include:
1. Adjustable Output Voltage: It can provide a stable output voltage ranging from 1.25V to 37V, allowing for a wide range of applications.

2. Current Output: It offers up to 1.5A of load current, suitable for medium power applications.
3. Thermal Regulation: The device features built-in thermal overload protection to prevent overheating.
4. Short-Circuit Protection: It includes current limiting to handle accidental short circuits safely.
5. Line and Load Regulation: Provides excellent line (0.01%/V) and load (0.1%) regulation, ensuring stable performance under varying conditions.
6. Low Output Voltage Tolerance: Maintains an output voltage tolerance with a typical 1.5% accuracy.
7. Package Options: Available in TO-220, TO-263, and other package types for different mounting requirements.
These features make the LM317KCS suitable for a variety of applications, such as power supplies, battery chargers, and adjustable output voltage circuits.

Package

The LM317KCS is a voltage regulator in a TO-220 package. This package type typically features three leads and is commonly used for through-hole mounting on printed circuit boards, offering a balance of thermal performance and size for power applications.

Pinout

The LM317KCS is a three-terminal adjustable voltage regulator. It is capable of supplying a regulated output voltage that can be adjusted between 1.25V and 37V, with a maximum output current of 1.5A. The pin count for the LM317KCS is three, and each pin has a specific function:
1. Input (Vin): This pin is connected to the unregulated input voltage source. It is where the input voltage is supplied to the regulator.
2. Output (Vout): This pin provides the regulated output voltage. The voltage at this pin can be adjusted by changing the resistance between the Output and Adjust pins.
3. Adjust (Adj): This pin is used to set the output voltage. An external resistor divider, connected between the Output and Adjust pins, is used to adjust the output voltage to the desired level.
The LM317KCS is commonly used in power supply applications, due to its ability to provide a stable and adjustable voltage output.

Manufacturer

The LM317KCS is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits. The company primarily focuses on developing analog chips and embedded processors, which are critical components in many electronic devices. TI's products are widely used in industries such as consumer electronics, automotive, industrial, and communications. With a strong emphasis on research and development, Texas Instruments plays a key role in advancing technology and providing innovative solutions to meet the needs of its global customer base.

Application

The LM317KCS is a versatile voltage regulator used in various applications, including adjustable power supplies, battery chargers, and current regulators. It is commonly used in electronics projects for voltage regulation in circuits, ensuring a stable output voltage despite variations in input voltage or load conditions. It is also used in embedded systems and DIY electronics for educational purposes and prototype development. Its ease of use and reliability make it a popular choice in both consumer and industrial electronic products.

Equivalent

Equivalent products to the LM317KCS voltage regulator include the L78XX series, the LT1086, LM1117, and the LM1084. Each of these offers similar functionality for adjustable voltage regulation, but specifications such as output current, dropout voltage, and package type may vary, so it's crucial to check the datasheets for compatibility with your specific application.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

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