Product details


VO (V) 1.8, 2.048, 2.5, 3, 3.3, 4.096, 5 Initial accuracy (Max) (%) 0.2, 0.5 Temp coeff (Max) (ppm/ degree C) 50 Rating Catalog Vin (Min) (V) 2 Vin (Max) (V) 12 Iq (Typ) (uA) 160 Features Enable pin Iout/Iz (Max) (mA) 5 Operating temperature range (C) -40 to 85 Shutdown current (Typ) (uA) 2 open-in-new Find other Series voltage references

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Series voltage references


  • Small SOT23-5 Package
  • Low Dropout Voltage: 120 mV Typical at 1 mA
  • High Output Voltage Accuracy: 0.2%
  • Source and Sink Current Output: ±5 mA
  • Supply Current: 160 µA Typical
  • Low Temperature Coefficient: 50 ppm/°C
  • Enable Pin
  • Fixed Output Voltages: 1.8, 2.048, 2.5, 3, 3.3,
    4.096, and 5 V
  • Industrial Temperature Range: −40°C to 85°C
  • (For Extended Temperature Range, −40°C to
    125°C, Contact TI)
open-in-new Find other Series voltage references


The LM4120 device is a precision low-power, low dropout bandgap voltage reference with up to 5-mA output current source and sink capability.

This series reference operates with input voltages as low as 2 V and up to 12 V, consuming 160-µA (typical) supply current. In power-down mode, device current drops to less than 2 µA.

The LM4120 comes in two grades (A and Standard) and seven voltage options for greater flexibility. The best grade devices (A) have an initial accuracy of 0.2%, while the standard have an initial accuracy of 0.5%, both with a temperature coefficient of 50 ppm/°C ensured from −40°C to 125°C.

The very low dropout voltage, low supply current, and power-down capability of the LM4120 make this product an ideal choice for battery-powered and portable applications.

The device performance is ensured over the industrial temperature range (−40°C to 85°C), while certain specifications are ensured over the extended temperature range (−40°C to 125°C). Contact TI for full specifications over the extended temperature range. The LM4120 is available in a standard 5-pin SOT-23 package.

open-in-new Find other Series voltage references
Similar products you might be interested in
open-in-new Compare products
Exact equivalent in functionality and parametrics to the compared device:
NEW REF4132 ACTIVE 12-ppm/°C low-noise low-power precision voltage reference REF4132 offers higher accuracy, lower quiescent current and lower temperature coefficients.

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet LM4120 Precision Micropower Low Dropout Voltage Reference datasheet (Rev. F) Mar. 17, 2016
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
Technical articles Trends in building automation: connected sensors in safety and security Jul. 20, 2016
User guides Gas Sensor Platform Reference Design Aug. 09, 2013
Selection guides Voltage Reference Overview Jul. 26, 2013
User guides LMP2021MAEVAL - Bridge Sensor Instrumentation Amp Evaluation Board User Guide (Rev. A) Apr. 22, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

40-V to 80-V adjustable output voltage boost reference design for LIDAR applications
PMP21629 — This reference design utilizes a non-synchronous boost controller to provide an adjustable output of between 40 V and 80 V capable of delivering a maximum of 100 mA of current to the load. This is an automotive design intended to power various applications such as LiDAR systems, which require an (...)
document-generic Schematic document-generic User guide
Gas Sensor Platform with Bluetooth Low Energy
TIDA-00056 This reference design is a low-power wireless gas sensor solution that supports a wide array of electrochemical gas sensors. With the versatility of a configurable interface for either Bluetooth® Low Energy, Zigbee RF4CE, 6LoWPAN or ANT this flexible and certified sensor solution is ideal for (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​


Related videos