LM3915 LED Dot-Bar Display Driver IC DIP-18

LM3915 LED Dot-Bar Display Driver IC DIP-18 is a versatile integrated circuit designed to drive LED dot/bar displays for visual voltage level indication. It can operate in either dot mode or bar mode, making it ideal for applications like battery level indicators, audio level meters, and signal strength displays. Its DIP-18 package ensures easy integration into prototyping and PCB designs.

Key Features of LM3915 LED Dot-Bar Display Driver:

• • Dot/Bar Mode: Can drive LEDs in dot or bar display mode.
  • Wide Voltage Range: Operates from 3V to 25V.
  • Adjustable Brightness: Controls LED brightness via an external resistor.
  • Low Power Consumption: Ideal for battery-powered applications.
  • Easy to Use: Simple interfacing with analog signals and LEDs.

Technical Specifications of LM3915 LED Dot-Bar Display Driver:

• • Supply Voltage: 3V to 25V
  • Output Current: 30mA per LED (max)
  • Input Voltage Range: 0V to V_CC
  • Reference Voltage: Adjustable from 1.2V to 12V
  • Operating Temperature: 0°C to +70°C
  • Package Type: DIP-18

Mechanical Characteristics of LM3915 LED Dot-Bar Display Driver:

• • Dimensions: 22.86mm x 7.62mm x 4.57mm (DIP-18 package)
  • Weight: Approximately 1 gram
  • Material: Epoxy mold compound
  • Mounting: Through-hole
  • Color: Black with white markings

Schematic Diagram and Pinout of LM3915 LED Dot-Bar Display Driver:

• • Pinout:
    • Pin 1: LED 1 (Output for the first LED)
    • Pin 2: LED 2 (Output for the second LED)
    • Pin 3: LED 3 (Output for the third LED)
    • Pin 4: LED 4 (Output for the fourth LED)
    • Pin 5: LED 5 (Output for the fifth LED)
    • Pin 6: LED 6 (Output for the sixth LED)
    • Pin 7: LED 7 (Output for the seventh LED)
    • Pin 8: LED 8 (Output for the eighth LED)
    • Pin 9: LED 9 (Output for the ninth LED)
    • Pin 10: LED 10 (Output for the tenth LED)
    • Pin 11: GND (Ground)
    • Pin 12: REF OUT (Reference voltage output)
    • Pin 13: REF ADJ (Reference voltage adjustment)
    • Pin 14: SIG IN (Signal input)
    • Pin 15: MODE (Dot/Bar mode selection)
    • Pin 16: V_CC (Positive power supply)
    • Pin 17: RHI (High reference voltage input)
    • Pin 18: RLO (Low reference voltage input)
  • Schematic Diagram: The LM3915 connects to a power supply (V_CC and GND), with SIG IN receiving the analog signal. The LED outputs (Pin 1 to Pin 10) drive the LEDs, and MODE selects between dot and bar display modes.

Applications of LM3915 LED Dot-Bar Display Driver:

• • Battery Level Indicators: Visualizes battery voltage levels.
  • Audio Level Meters: Displays audio signal strength in real-time.
  • Signal Strength Indicators: Used in communication devices to show signal strength.
  • Voltage Monitoring: Monitors and displays voltage levels in circuits.
  • DIY Electronics: Perfect for hobbyists building visual display projects.

Equivalent Models of LM3915 LED Dot-Bar Display Driver:

• • LM3914 LED Driver: A similar LED driver IC with logarithmic scaling.
  • LM3916 LED Driver: Alternative LED driver IC for VU meter applications.

Datasheet:

• • Download LM3915 LED Dot-Bar Display Driver Datasheet

Keywords for LM3915 LED Dot-Bar Display Driver:

• • LM3915 LED Driver
  • Dot-Bar Display Driver
  • DIP-18 LED Driver
  • Voltage Level Indicator
  • LED Bar Graph Driver

Package Includes:

• • 1 x LM3915 LED Dot-Bar Display Driver IC DIP-18