LM3915 – Dot/Bar Display Driver IC with Logarithmic Scale

35.00 EGP

The LM3915 is an integrated circuit designed to drive LED dot/bar displays with a logarithmic response. This makes it ideal for audio level meters, where the display corresponds to the logarithmic nature of human hearing. It lights up 10 LEDs based on an analog voltage input, representing signal strength or other variable parameters.

SKU: CM-21648 Category: Tags: ,

Description

🔧 Key Features:

  • Type: LED dot/bar display driver

  • Number of Outputs: 10 LEDs (dot or bar mode)

  • Input Voltage Range: Typically 1.2V to 12V

  • Operating Voltage: 3V to 25V

  • Current Drive: Adjustable LED current up to 30mA per LED

  • Display Modes: Dot mode (one LED lit) or bar mode (cumulative LEDs lit)

  • Logarithmic Scale: 3 dB per step, matching audio signal perception

  • Package: 18-pin DIP and SOIC (surface mount)

  • Operating Temperature Range: -40°C to +85°C

⚙️ Typical Applications:

  • Audio level meters and VU meters

  • Signal strength indicators

  • Battery level displays

  • Power supply monitors

  • Sensor output displays

📦 Package Includes:

  • 1 x LM3915 Dot/Bar Display Driver IC – DIP-18 Package

✅ Why Choose the LM3915?

The LM3915 provides a clear and intuitive visual representation of logarithmic signals, making it perfect for audio and other signal-level displays. Its adjustable current and flexible display modes make it a favorite for both professional and hobbyist applications.

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