LM3915 Dot/Bar Display Driver

The LM3915 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.

LM3915 Dot/Bar Display Driver Datasheet