LM4140BCM-2.5/NOPB

Voltage Reference Overview

The LM4140BCM-2.5/NOPB is a micropower low-dropout series voltage reference manufactured by Texas Instruments, housed in an SOIC-Narrow-8 package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.1%. The device features a temperature coefficient of 6 PPM/°C and supports a maximum shunt current of 8 mA. It operates within a supply voltage range up to 5.6 V and functions at temperatures between 0°C and +70°C. Quiescent current ranges from 230 µA to 265 µA.

Voltage Reference Feature Summary

• Micropower low-dropout series architecture for efficient operation
• High precision with 0.1% initial accuracy and 6 PPM/°C temperature coefficient
• Integrated enable pin for power management control

Voltage Reference Applications

• Portable instrumentation requiring low power consumption
• Battery-powered measurement systems
• Data acquisition systems needing stable reference voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'BCM' indicates the commercial temperature grade (0°C to +70°C) and narrow SOIC package. Confirm 'NOPB' denotes lead-free and RoHS compliance. Ensure the ordering part number matches the required voltage output of 2.5 V. Cross-reference the manufacturer datasheet for any recent product change notifications or end-of-life status updates before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a precise, low-power series voltage reference is required in a surface-mount package. The 6 PPM/°C temperature coefficient offers stability superior to standard references. Compare against the LM4140ACM variant if a wider industrial temperature range (-40°C to +85°C) is necessary. Consider the 8 mA maximum shunt current limit for load regulation requirements.

Voltage Reference Part Context

This part belongs to the LM4140 family of micropower precision voltage references. It shares architectural similarities with the LM4140ACM but differs in temperature rating and packaging. The LM4140 series is designed to replace older zener-based references, offering lower noise and better long-term stability in compact form factors suitable for modern PCB designs.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.