LM4132CMFX-3.3

Voltage Reference Overview

The LM4132CMFX-3.3 is a precision series voltage reference from Texas Instruments, featuring a fixed output of 3.3 V with an initial accuracy of ±0.2%. It operates within a supply voltage range of 3.7 V to 5.5 V and delivers up to 20 mA of load current. The device utilizes CMOS technology with EEPROM-based laser trimming for high stability. Key electrical parameters include a typical temperature coefficient of 20 ppm/°C, a low quiescent current of 60 µA, and a shutdown mode consuming only 3 µA. It is housed in a compact SOT-23-5 package.

Voltage Reference Feature Summary

• EEPROM-based curvature correction ensures high long-term stability and accuracy across the operating temperature range.
• Integrated enable pin allows for deep power-down operation with minimal standby current consumption.
• Capable of sourcing up to 20 mA without requiring an external buffer amplifier or output capacitor.
• Low dropout voltage design enables efficient operation in battery-powered applications.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the ordering suffix 'F' corresponds to tape-and-reel packaging as specified by Texas Instruments. Confirm the grade designation 'C' matches the required ±0.2% initial accuracy specification. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with ±0.2% accuracy is required in a space-constrained SOT-23 package. It is suitable for designs needing low quiescent current and an enable feature for power management. Consider alternative grades if tighter accuracy or lower temperature coefficients are necessary.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision low-dropout voltage references. The family offers various voltage options and accuracy grades (A through E) to suit different application requirements. The LM4132CMFX-3.3 specifically provides the 3.3 V output option with C-grade performance specifications.

Voltage Reference Replacement Considerations

LM4132CMF-3.3/NOPB