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See Technical Specifications

LM3915N-1

Displays up to 70 dots or bars

Manufacturer:

Texas Instruments
Mfr.Part #:

LM3915N-1
Datasheet:

LM3915N-1 Datasheet (PDF)
Series:

LM3915
Mounting Style:

Through Hole
Number of Outputs:

10 Output
Height:

3.9 mm
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LM3915N-1 General Description

The LM3915N-1 is an integrated circuit (IC) designed for driving a series of LED's in a bar graph display. It features a logarithmic output voltage scaling, enabling a more human-perceived response to changing input levels. The IC operates from a single supply voltage ranging from 3V to 25V, making it versatile for various applications. It contains 10 comparators, each driving an LED segment directly. The LED current is programmable, allowing for customization based on the application's requirements. Additionally, it offers a wide range of LED brightness control and can be cascaded for expanded display capabilities. The LM3915N-1 is commonly used in audio level indicators, VU meters, and other visual representation systems where analog data needs to be displayed in a bar graph format

Key Features

Single 10-LED driver
Operates with a wide range of supply voltages
Linearly scales analog input voltage to LED brightness
Can drive up to 10 LEDs with different brightness levels
Low standby current
Can be cascaded for driving more than 10 LEDs
Easy to program and adjust brightness levels

Application

Audio equipment: The LM3915N-1 can be used in audio level indicator circuits for amplifiers, mixers, and sound systems.
Automotive: It is commonly used in car audio systems for level meters and LED bar graph displays.
Communication devices: The LM3915N-1 can also be used in signal strength meters for radios and walkie talkies.
Power supply monitoring: It can be used to indicate the voltage levels of batteries or power supplies.
Test and measurement equipment: The LM3915N-1 is used in various electronic test equipment to display signal levels or other measurements.

Specifications

Product Category	LED Lighting Drivers	Series	LM3915
Mounting Style	Through Hole	Number of Outputs	10 Output
Height	3.9 mm	Length	22.86 mm
Number of Channels	10 Channel	Operating Supply Voltage	3 V to 25 V
Pd - Power Dissipation	1.365 W	Product Type	LED Lighting Drivers
Factory Pack Quantity	20	Subcategory	Driver ICs
Supply Current - Max	9.2 mA	Width	6.35 mm