LM4132DMFX-3.3

Voltage Reference Overview

The LM4132DMFX-3.3 is a precision low dropout voltage reference from Texas Instruments, providing a fixed output of 3.3 V in a 5-pin SOT-23 package. It operates within an input voltage range of 3.7 V to 5.5 V and supports a maximum load current of 20 mA with a supply current of 60 µA. The device features an initial accuracy of ±0.4% and a temperature coefficient of 20 ppm/°C across the -40°C to +125°C junction temperature range. Low-frequency noise is specified at 310 µVp-p (0.1 Hz to 10 Hz), and it includes an enable pin for a 3 µA shutdown mode.

Voltage Reference Feature Summary

• EEPROM-based curvature correction for high precision
• Low dropout operation without output capacitor requirement
• Dedicated enable pin for power management

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'DMF' against the manufacturer's datasheet to confirm the exact grade and tolerance specifications. Ensure the ordering code matches the required automotive or industrial qualification status if applicable. Confirm the presence of the 'X' suffix indicates tape-and-reel packaging.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference is needed in a space-constrained SOT-23 footprint. It is suitable for applications requiring low quiescent current and high accuracy without the complexity of external buffering capacitors.

Voltage Reference Part Context

This part belongs to the LM4132 family of CMOS band-gap voltage references. The family utilizes EEPROM registers for package-level programming to correct curvature and temperature drift, offering performance comparable to laser-trimmed bipolar references.

Voltage Reference Replacement Considerations

LM4132DMF-3.3