LM 3914

The LM 3914 LED Bar Display Driver provides a straightforward, reliable method to drive LED bar graph displays and visualize analog voltage levels. It controls up to 10 LEDs proportionally, delivering clear visual indication of input voltage for monitoring and user feedback.

• 10-segment LED output enables precise indication of input voltage with smooth progression.
• Adjustable reference voltage permits customization of the voltage range to suit different applications.
• Low power consumption supports efficient operation in battery-powered and low-energy designs.
• Wide supply voltage range from 3V to 25V ensures compatibility with a variety of power systems.
• High input impedance minimizes loading on the measured signal and preserves measurement accuracy.

Compared with other LED drivers, the LM 3914 simplifies integration by requiring fewer external components, making it a preferred choice for designers who prioritize reliability and simplicity. Its integrated features reduce wiring complexity and enhance flexibility in voltage scaling.

Built for precise voltage-level indication, the LM 3914 incorporates an internal voltage reference and ten comparators to provide consistent LED activation thresholds and smooth transitions across the display. These characteristics make it well suited for electronic measurement instruments, audio level indicators, and other applications that demand intuitive visual feedback.