LM4132BMFX-2.5

Voltage Reference Overview

The LM4132BMFX-2.5 is a precision series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 package. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.1%. The device operates within a temperature range of -40°C to +125°C and features a maximum supply current of 60 µA (100 µA max over temperature). It supports a maximum load current of 20 mA and functions with an input voltage range from VREF + 400 mV up to 5.5 V.

Voltage Reference Feature Summary

• Features an enable pin that allows for a low-power shutdown mode with minimal current consumption.
• Capable of delivering high output current without requiring an external buffer amplifier or output capacitor.
• Utilizes EEPROM-based laser trimming to correct curvature and temperature coefficient errors during assembly.

Voltage Reference Applications

• Data acquisition systems
• Portable battery-powered equipment
• Precision regulators

Voltage Reference Procurement Notes

Verify the specific suffix 'BMFX' against the manufacturer's datasheet to confirm the exact grade, tolerance, and packaging configuration. Ensure the ordering part number matches the required initial accuracy and temperature coefficient specifications for your design.

Voltage Reference Selection Notes

Select this component when a compact SOT-23 footprint is required alongside high precision. The B-grade designation indicates a tighter initial accuracy compared to standard grades. Consider the dropout voltage requirements relative to the available input supply voltage under varying load conditions.

Voltage Reference Part Context

This device belongs to the LM4132 family of CMOS precision voltage references. The family offers various voltage options and grades (A through E) to balance performance and cost. The LM4132 architecture replaces traditional bipolar references with a more cost-effective CMOS solution while maintaining comparable stability.

Voltage Reference FAQ

Does the LM4132BMFX-2.5 require an output capacitor?

No, the device is stable with low-ESR ceramic capacitors and does not strictly require an output capacitor or buffer amplifier for operation.

What is the function of the EN pin?

The EN (Enable) pin controls the device state. Driving it low activates a shutdown mode with significantly reduced supply current.