LM4132 Precision Low-Dropout Voltage Reference

Specifications

Product Overview

The LM4132 is a Texas Instruments precision low-dropout voltage reference in the Power_Management category. It provides standard reference outputs of 1.8 V, 2.048 V, 2.5 V, 3.0 V, 3.3 V, and 4.096 V, with custom voltage options spanning 1.8 V to 4.096 V.

For the best grade A device, the datasheet specifies 0.05% initial output voltage accuracy and a 10 ppm/°C temperature coefficient. Typical operating supply current is 60 µA, while shutdown supply current through the enable pin is 3 µA. The LM4132 can supply up to 20 mA output current, with an input voltage range of VREF + 400 mV to 5.5 V at a 10 mA load.

The device is offered in a 5-pin SOT-23 (DBV) package with a 2.90 mm x 1.60 mm nominal body. Recommended operating limits include a maximum input supply voltage of 5.5 V and junction temperature from -40°C to 125°C. Thermal data for the DBV package includes 164.1°C/W junction-to-ambient resistance, 115.3°C/W junction-to-case top resistance, and 27.1°C/W junction-to-board resistance.

Key Features

• Precision low-dropout voltage reference architecture
• Six standard output voltage options from 1.8 V to 4.096 V
• Custom output voltage options from 1.8 V to 4.096 V
• 0.05% initial accuracy for best grade A device
• 10 ppm/°C temperature coefficient for best grade A device
• 60 µA typical operating supply current
• 3 µA shutdown current using enable pin shutdown mode
• 20 mA maximum output current capability
• Input range of VREF + 400 mV to 5.5 V
• 5-pin SOT-23 DBV package with compact nominal body

Typical Applications

• Precision voltage reference rails
• Low-dropout reference supply nodes
• Enable-controlled reference circuits
• Compact SOT-23 power designs
• 1.8 V reference outputs
• 2.048 V reference outputs
• Low-current reference applications

Procurement Notes

When requesting a quote for LM4132, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.

If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.

For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.