LM4132DMFX-2.5

Voltage Reference Overview

The LM4132DMFX-2.5 is a precision low dropout voltage reference manufactured by Texas Instruments, housed in a 5-pin SOT-23 package. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.4%. 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 includes an enable pin for shutdown mode. The input voltage range extends from VREF + 400 mV up to 5.5 V.

Voltage Reference Feature Summary

• Features EEPROM-based calibration for curvature correction and accuracy compensation on a CMOS band-gap architecture.
• Incorporates an enable pin that allows the device to enter a low-power shutdown mode.
• Capable of delivering up to 20 mA of output current without requiring an external buffer amplifier or output capacitor.

Voltage Reference Applications

• Instrumentation and process control systems
• Data acquisition systems
• Battery-powered portable equipment
• Precision regulators and battery chargers

Voltage Reference Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact grade, packaging format, and revision level. Ensure compatibility with automotive qualification standards if required for the target application environment.

Voltage Reference Selection Notes

Select this component when space-constrained designs require a high-accuracy series reference in a small footprint. The D-grade specification offers a balance between cost and performance, suitable for applications needing 0.4% initial accuracy and stable operation across wide industrial temperature ranges.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision voltage references designed using cost-effective CMOS technology. The family utilizes laser-trimmed EEPROM registers to overcome assembly shifts, providing performance comparable to traditional bipolar references while maintaining low power consumption and compact sizing.

Voltage Reference Replacement Considerations

LM4132CMFX-2.5/NOPB

Voltage Reference FAQ

Does the LM4132DMFX-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 standard operation.

What is the function of the EN pin?

The EN pin serves as an enable input. Driving it low activates a shutdown mode, reducing the supply current to approximately 3 µA.