XD3915 – LED Dot/Bar Display Driver – Xinluda

The Xinluda XD3915 is a logarithmic (3 dB/step) LED dot/bar display driver in a DIP-18 package, driving up to 10 LEDs with programmable, regulated output current. A pin-compatible LM3915-type device ideal for audio level and wide-dynamic-range bargraph displays.

The XD3915 from Xinluda is a monolithic logarithmic LED dot/bar display driver housed in an 18-pin DIP package. It senses an analog input voltage and drives a string of up to 10 LEDs in either a moving-dot or full-bar display, with each step representing a logarithmic increment. This makes the XD3915 a popular, cost-effective equivalent to the classic LM3915-family display driver for signals with a wide dynamic range, such as audio levels and signal strength.

Output LED current is internally regulated and programmable, which eliminates the need for external current-limiting resistors on each LED and simplifies board layout. A single mode-select pin switches the entire display between bar-graph and dot modes. The device runs from a single low-voltage supply, making it well suited to battery-powered and compact instrumentation designs.

Key Features

• Logarithmic (3 dB/step) LED display driver, LM3915-type function
• Drives up to 10 LED outputs in bar or dot mode
• Operating supply voltage range of 3 V to 20 V (per distributor datasheet listing)
• Regulated, programmable LED drive current (approx. 10–30 mA per output)
• Pin-selectable bar-graph or moving-dot display mode
• Operating temperature range 0°C to +70°C
• DIP-18 through-hole package; wave-solder compatible
• RoHS compliant; MSL 1 (low moisture sensitivity)

Applications

• Audio VU / level meters and peak-level indicators
• Power, RF signal-strength and SWR meters
• Instrumentation and panel bargraph displays
• Light-intensity and vibration monitoring
• Battery and process-level indicators

Why Source XD3915 from Pacific Component Xchange

The Xinluda XD3915 is a specialty display-driver IC with limited authorized-distributor coverage in Western markets, which can make it difficult to source reliably for production or maintenance runs. Pacific Component Xchange is an independent distributor focused on hard-to-find and obsolete power-management and display-driver components. We help engineers and buyers secure XD3915 inventory with authenticity verification, flexible quantities, and global shipping.

Because this is a Request-For-Quote item, pricing and lead time are confirmed per order. Submit an RFQ today and our sourcing team will respond with current availability, pricing, and shipping options for the XD3915.