LM4132DMF-3.0

Voltage Reference Overview

The LM4132DMF-3.0 is a precision series voltage reference manufactured by Texas Instruments, housed in a SOT-23 (5) package. It provides a fixed output voltage of 3 V with an initial accuracy of ±0.4%. The device operates within a junction temperature range of -40°C to +125°C and features a maximum supply current of 60 µA, increasing to 100 µA across the full operating temperature range. It supports a maximum load current of 20 mA and includes an enable pin for shutdown mode.

Voltage Reference Feature Summary

• Utilizes EEPROM registers for curvature correction and package-level programming to maintain high accuracy.
• Delivers up to 20 mA output current without requiring an output capacitor or buffer amplifier.
• Features a low dropout voltage allowing operation with minimal input-to-output differential.
• Includes an enable pin that reduces supply current to microampere levels during shutdown.

Voltage Reference Applications

• Instrumentation and process control systems
• Data acquisition systems
• Portable battery-powered equipment
• Precision regulators

Voltage Reference Procurement Notes

Verify the specific grade suffix 'D' corresponds to the required ±0.4% initial accuracy specification. Confirm the 'MF' suffix indicates the correct SOT-23 package variant and the '-3.0' designator matches the 3 V output requirement. Ensure the NOPB designation aligns with RoHS compliance needs for the target assembly process.

Voltage Reference Selection Notes

Select this component when a fixed 3 V reference with ±0.4% accuracy is sufficient for the application. Consider the D grade if tighter tolerances like A or B grades are not required. Evaluate the 60 µA quiescent current against system power budgets. Verify that the SOT-23 footprint fits the PCB layout constraints.

Voltage Reference Part Context

This part belongs to the LM4132 family of CMOS-based precision voltage references. The family offers various output voltages and accuracy grades (A through E). The LM4132 distinguishes itself from traditional laser-trimmed bipolar references by using CMOS technology with EEPROM correction, providing comparable performance in a cost-effective, space-saving package.

Voltage Reference Replacement Considerations

LM4132EMF-3.0/NOPB

Voltage Reference FAQ

Does the LM4132DMF-3.0 require an output capacitor for stability?

No, the device does not require an output capacitor or buffer amplifier for stability.

What is the function of the EN pin on the LM4132DMF-3.0?

The EN pin allows the user to enable or disable the device, reducing the supply current to approximately 3 µA in shutdown mode.