LM317KCS

Name: LM317KCS
Rating: 4.5 (10 reviews)

1.25V to 37V adjustable output

7,970 Effective Inventory

LM317KCS

Effective Inventory7,970

1.25V to 37V adjustable output

Manufacturer Part # : LM317KCS
Package/Case: TO-220 (KCS)-3
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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LM317KCS DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$0.626	$0.63
10	$0.528	$5.28
30	$0.478	$14.34
100	$0.408	$40.80
500	$0.379	$189.50
1000	$0.364	$364.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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Details

One of the key features of the LM317KCS is its built-in short-circuit current limiting and thermal shutdown protection mechanisms, which help to safeguard the device against potential damage caused by overcurrent or excessive heat. This ensures the longevity and durability of the regulator, making it a reliable choice for demanding environments

Key Features

The LM317KCS is an adjustable voltage regulator with a maximum output current of 1

5A, an adjustable output voltage range from 1

2V to 37V, and a dropout voltage of 2

It has thermal overload protection, short circuit protection, and is available in a TO-220 package

Application

Current limiting application
Temperature regulation in circuits
Amplifier power supply

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Output options	Adjustable Output	Iout (max) (A)	1.5
Vin (max) (V)	40	Vin (min) (V)	3
Vout (max) (V)	37	Vout (min) (V)	1.25
Noise (µVrms)	38	Iq (typ) (mA)	5
Thermal resistance θJA (°C/W)	24	Rating	Catalog
Load capacitance (min) (µF)	0	Regulated outputs (#)	1
Accuracy (%)	5	PSRR at 100 KHz (dB)	38
Dropout voltage (Vdo) (typ) (mV)	2000	Operating temperature range (°C)	0 to 125

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LM317KCS PDF Download

FAQs

What is LM317KCS?

The LM317KCS is a three-terminal adjustable positive voltage regulator integrated circuit (IC) manufactured by Texas Instruments. It is designed to provide a constant output voltage with adjustable values using external resistors, making it suitable for various power supply applications.

How Does LM317KCS Work?

The LM317KCS operates by adjusting the resistance between the ADJ (adjust) pin and the output to regulate the voltage output. By connecting external resistors, the output voltage can be set to a specific value within its specified range. The IC maintains the output voltage at the adjusted level even with changes in input voltage or load current.

How Many Pins does LM317KCS have and What are the Functions of the Pinout Configuration?

The LM317KCS is typically housed in a TO-220 package with three pins:

INPUT: Input voltage pin.
ADJ: Adjustment pin to set the output voltage.
OUTPUT: Regulated output voltage pin.

What are the Pros and Cons of LM317KCS?

Pros:

Adjustable Output: Allows for flexibility in setting the output voltage as needed.
Short Circuit Protection: Built-in protection feature helps prevent damage in case of a short circuit.
Thermal Regulation: Includes thermal overload protection to ensure safe operation.
Wide Operating Range: Can handle input voltages significantly higher than the output voltage.

Cons:

Heat Dissipation: May require a heat sink for high current or high voltage applications.
Power Dissipation: In high voltage drops, the IC may dissipate relatively high power as heat.
Noisy Output: Some applications may require additional filtering for noise-sensitive systems.

Are There Any Equivalents/Alternatives to LM317KCS for Recommendation?

Some equivalents or alternatives to the LM317KCS voltage regulator include:

LM338 from Texas Instruments, which offers higher current capability.
L78xx series from STMicroelectronics, providing fixed output voltage options.
LT1083 from Linear Technology, featuring lower dropout voltage and high current output.

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LM317KCS

LM317KCS

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Pricing (USD)

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