LM4041BIDCKR

Overview

The LM4041BIDCKR is a precision micropower shunt voltage reference manufactured by National Semiconductor. It provides a stable output voltage of 2.5 V with an initial accuracy of 0.5% and a temperature coefficient of 150 ppm/°C. The device operates within a current range of 45 μA to 12 mA and functions across a temperature range of -40°C to +85°C. Packaged in a SC-70-5 (SOT-323) surface-mount format, it integrates low dynamic impedance and low noise characteristics suitable for compact electronic designs.

Feature Summary

• Provides precise micropower shunt voltage regulation without requiring external capacitors for stability.
• Features low dynamic impedance and low output noise for high signal integrity.
• Offers tight output tolerance and low temperature coefficient for consistent performance.
• Designed for halogen-free compliance in environmentally conscious applications.

Applications

• Portable battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Precision audio components

Procurement Notes

Verify the manufacturer origin carefully, as Texas Instruments acquired National Semiconductor's analog business. Confirm that the specific suffix 'CKR' corresponds to the SC-70-5 package and tape-and-reel delivery format. Ensure the component meets RoHS and halogen-free requirements if mandated by your design specifications. Cross-reference datasheets from both National Semiconductor and Texas Instruments archives for complete electrical parameters.

Selection Notes

Select this component when a fixed 2.5 V reference is required in space-constrained designs. The SC-70-5 package offers a small footprint compared to traditional SOT-23 options. Consider the 0.5% initial accuracy and 150 ppm/°C temperature coefficient against application stability needs. The micropower consumption makes it suitable for battery-operated devices where standby current minimization is critical.

Part Context

The LM4041 series belongs to a family of precision micropower shunt voltage references originally developed by National Semiconductor. These devices are widely used in industrial and automotive sectors. Following the acquisition of National Semiconductor's analog division by Texas Instruments, documentation and support for these parts are maintained under the TI portfolio. The LM4041BIDCKR represents a specific variant optimized for surface-mount assembly.

FAQ

Does the LM4041BIDCKR require an external capacitor for stability?

No, the LM4041 is designed to be stable without an external capacitor, simplifying the circuit layout.

What is the operating current range for this device?

The device operates within a current range of 45 μA to 12 mA.