LM3914N-1 Bridgold 10-bit LED Driver Adjustable Current Dot/Bar

Description

Product Overview

The LM3914N-1 from Bridgold is a high‑performance 10‑bit LED driver designed for precision visual indication across a broad spectrum of electronic applications. Housed in a compact 4.92 × 2.72 × 0.16 inch package, the device integrates a robust internal voltage reference that operates from 1.2 V up to 12 V, allowing it to adapt to diverse power supplies. Users can select between dot or bar display modes via external pins, giving flexibility to create either discrete point indicators or continuous bar graphs. The output current is fully programmable between 2 mA and 30 mA, enabling fine‑tuned brightness control for LEDs, LCDs, or even vacuum‑fluorescent displays. With a low quiescent current and reliable temperature characteristics, the LM3914N-1 is engineered for long‑term stability in both prototype and production environments.

Usage

Engineers, hobbyists, and system integrators can employ the LM3914N-1 in a variety of settings. In industrial control panels, the driver can illuminate status LEDs that reflect sensor readings or process variables, providing immediate visual feedback. In consumer electronics, it powers battery‑operated devices such as portable meters, where its low power consumption extends runtime. The device also excels in educational kits, allowing students to experiment with analog‑to‑digital conversion and visual representation of data. Its ability to drive up to ten LEDs or segments makes it suitable for audio level meters, temperature gauges, and voltage monitors. The flexible current range ensures compatibility with both low‑power indicator LEDs and higher‑intensity bar‑graph LEDs, while the selectable dot/bar mode simplifies circuit design by eliminating the need for additional multiplexing components.

Why Choose Us

Bridgold has a long history of delivering reliable optoelectronic components, and the LM3914N-1 exemplifies that commitment to quality. Each unit undergoes rigorous testing to meet the stringent specifications required for industrial and scientific applications. The driver’s internal voltage reference is calibrated to maintain accuracy across temperature extremes, reducing the need for external compensation. Our manufacturing process incorporates tight tolerance controls, ensuring that every batch provides consistent current programming and display performance. In addition, Bridgold offers comprehensive technical support, including detailed datasheets, application notes, and responsive engineering assistance to help customers integrate the driver quickly and efficiently. With a proven track record reflected in a 4.8‑star rating from over 40 verified purchasers, the LM3914N-1 is a trusted choice for demanding projects.

Key Features

• Selectable dot or bar display mode simplifies circuit design and reduces component count
• Programmable output current from 2 mA to 30 mA provides precise brightness control for diverse LED types
• Wide supply voltage range of 1.2 V to 12 V enables use in low‑power and high‑voltage systems alike
• Compact footprint (4.92 × 2.72 × 0.16 in) fits easily onto dense PCBs without sacrificing performance
• Dedicated Bridgold technical support and comprehensive documentation ensure smooth integration and long‑term reliability

FAQ

Can the LM3914N-1 drive both LEDs and LCDs?

Yes, the driver is designed to source current to LEDs, LCDs, and even vacuum‑fluorescent displays, making it a versatile component for many visual output applications.

How do I select dot versus bar mode?

The mode is chosen by connecting the appropriate external pins as described in the datasheet; no internal configuration changes are required.

What is the maximum number of LEDs that can be driven?

The LM3914N-1 can control up to ten individual LEDs or segments, matching the 10‑bit architecture of the device.

Is the device suitable for battery‑powered projects?

Its low quiescent current and ability to operate down to 1.2 V make it well‑suited for battery‑operated designs where power efficiency is critical.

What warranty or after‑sales service does Bridgold provide?

Bridgold offers a standard one‑year warranty covering manufacturing defects, along with access to technical support for troubleshooting and design assistance.