LM3915N-1/NOPB

Display Drivers Overview

The LM3915N-1/NOPB is a dot/bar display driver manufactured by Texas Instruments, designed for logarithmic scale indication. It features ten constant-current sinks capable of driving LEDs or bar graph displays. The device operates from a single power supply ranging from 3V to 28V. It includes an internal voltage reference and a precision resistor divider network to establish the step voltage. The output stage supports up to 40mA per channel with open-collector configuration.

Display Drivers Feature Summary

• Provides ten constant-current sinks for driving external loads such as LEDs
• Features an internal voltage reference and precision resistor divider network
• Supports operation from a single power supply within a wide voltage range
• Designed specifically for logarithmic scale dot/bar display applications

Display Drivers Applications

• Audio level meters
• Power supply voltage indicators
• Signal strength displays
• Battery charge level indicators

Display Drivers Procurement Notes

Verify the suffix NOPB indicates lead-free and RoHS compliance status according to current Texas Instruments documentation. Confirm the package type matches the required MDIP-10 footprint for your PCB design. Ensure the operating temperature range aligns with your system's environmental specifications before finalizing procurement.

Display Drivers Selection Notes

Select this component when a logarithmic response curve is required for visual signal representation. It is suitable for applications needing multiple synchronized outputs driven by a single analog input. Consider the maximum sink current capability and supply voltage limits relative to the connected load requirements.

Display Drivers Part Context

This part belongs to the LM391x family of display drivers from Texas Instruments. While the LM3914 provides linear scaling and the LM3916 offers a different logarithmic profile, the LM3915 is optimized for specific logarithmic attenuation characteristics. The N-1 designation typically refers to the specific tape-and-reel or tube packaging variant within the standard PDIP-10 form factor.

Display Drivers Replacement Considerations

LM3915N: Standard equivalent without explicit NOPB lead-free designation in older datasheets. LM3916N: Alternative if a different logarithmic slope is acceptable. LM3914N: Alternative if linear scaling is preferred instead of logarithmic.