The LM3914 is a display driver IC, it can control upto 10 LEDs so commonly used with 5×5 Dot Matrix displays or the 10-segment LED bar displays. It controls a BAR or DOT LED display by turning on and off depending on voltage levels and provides a linear analog display. These ICs can be cascaded to control upto 100 LEDs. The device does not require any programming or microcontroller and also eliminates the use of external resistors and other components The internal reference voltage for the LM3914 IC can be set from 1.2V to 12V and the output current can be programmed to be from 2mA to 30mA according to the LED that is being driven. This IC features its own reference voltage and accurate 10-step voltage divider. LM3914 pinout: LM3914 Features and Specifications Features : Drives 10 bar/dot LED display without a controller User can externally select bar and display mode Can be cascaded Current regulated LED driver output No multiplex switching or interaction between outputs Compatible with both TTL and CMOS logic Single voltage supply Specification : Operating voltage : 3V to 18V Maximum supply voltage : 25V Analog input voltage range : 1.2V to 12V Input bias current : 25nA to 100nA Reference load current ( maximum) : 10mA Power dissipation : 1365mW Storage temperature : -55 to 150 LM3914 Applications: Dot matrix display Bar type display driver UI based hardware applications LED driver LM3914 Dimension and footprint: Package Contains 1x LM3914 Display Driver IC