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LM3915N LED Display Driver

LM3915N
Photo of a DIP 18 case.

$8.25

QTY Price
1 $8.25
5 $7.50

Description

The LM3915N is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing a logarithmic 3 dB/step analog display. One pin changes the display from a bar graph to a moving dot display. LED current drive is regulated and programmable, eliminating the need for current limiting resistors. The whole display system can operate from a single supply as low as 3V or as high as 25V.

Rated for operation from 0˚C to +70˚C.

Features

  • 3 dB/step, 30 dB range
  • Drives LEDs, LCDs, or vacuum fluorescents
  • Bar or dot display mode externally selectable by user
  • Expandable to displays of 90 dB
  • Internal voltage reference from 1.2V to 12V
  • Operates with single supply of 3V to 25V
  • Inputs operate down to ground
  • Output current programmable from 1 mA to 30 mA
  • Input withstands ±35V without damage or false outputs
  • Outputs are current regulated, open collectors
  • Directly drives TTL or CMOS
  • The internal 10-step divider is floating and can be referenced to a wide range of voltages

Specifications

No. of Outputs

10

Output Current

30mA

Output Voltage

1.28V

Driver Case Style

DIP

No. of Pins

18

Input Voltage

3V - 25V

Operating Temperature

0°C - 70°C

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Products may differ from pictured.
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