LM4132BMF-4.1

Voltage Reference Overview

The LM4132BMF-4.1 is a precision series voltage reference from Texas Instruments, delivering a nominal output of 4.096 V in a compact SOT-23 (5-pin) package. It features an initial accuracy of ±0.1% and a temperature coefficient of 20 ppm/°C across the -40°C to +125°C operating range. The device operates with a supply current of 60 µA and supports up to 20 mA load current. It includes an enable pin for shutdown mode and requires only a single input capacitor.

Voltage Reference Feature Summary

• EEPROM-based laser trimming corrects curvature and temperature coefficient for high precision
• Low dropout design allows operation with minimal input-to-output voltage differential
• Integrated enable pin provides ultra-low power shutdown capability

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'BMF' matches the required grade and packaging configuration. Confirm that the 4.1 designation corresponds to the 4.096 V output option. Ensure the component meets RoHS compliance requirements for your assembly process. Check for any automotive qualification needs if applicable to the target environment.

Voltage Reference Selection Notes

Select this part when high accuracy and low temperature drift are critical. The B-grade offers tighter initial accuracy than standard grades. Consider the 20 mA output capability for driving moderate loads without external buffering. The SOT-23 package is suitable for space-constrained designs.

Voltage Reference Part Context

This component belongs to the LM4132 family of CMOS band-gap references. It utilizes EEPROM registers for package-level programming to overcome assembly shifts. The family includes various voltage options and grades (A through E) to balance performance and cost.

Voltage Reference Replacement Considerations

LM4132BMFX-4.1/NOPB

Voltage Reference FAQ

Does the LM4132BMF-4.1 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.

What is the function of the EN pin?

The EN pin enables or disables the device. Driving it low activates a shutdown mode with significantly reduced supply current.