Product details


VO (V) 1.225 Reference voltage Adjustable, Fixed Initial accuracy (Max) (%) 0.1, 0.2, 0.5 Rating Catalog VO adj (Min) (V) 1.24 VO adj (Max) (V) 10 Iz for regulation (Min) (uA) 60 Temp coeff (Max) (ppm/ degree C) 50 Operating temperature range (C) -40 to 85 Iout/Iz (Max) (mA) 12 open-in-new Find other Shunt voltage references

Package | Pins | Size

SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37 open-in-new Find other Shunt voltage references


  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Reverse Breakdown Voltage Options of 1.225 V and Adjustable
  • Key Specifications:
    • Output Voltage Tolerance (A Grade, 25 ̊C) ± 0.1% (Maximum)
    • Output Noise (10 Hz to 10 kHz) 20 µV rms
    • Operating Current Range: 60 µA to 12 mA
    • Industrial Temp. Range: −40 ̊C to +85 ̊C
    • Extended Temp. Range: −40 ̊C to +125 ̊C
    • Temperature Coefficient: 50 ppm/ ̊C (Maximum)

All trademarks are the property of their respective owners.

open-in-new Find other Shunt voltage references


Ideal for space critical applications, the LM4051-N precision voltage reference is available in the sub-miniature (3 mm x 1.3 mm) SOT-23 surface-mount package. The LM4051-N’s advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4051-N easy to use. Further reducing design effort is the availability of a fixed (1.225V) and adjust- able reverse breakdown voltage. The minimum operating current is 60 µA for the LM4051-1.2 and the LM4051-ADJ. Both versions have a maximum operating current of 12 mA.

The LM4051-N comes in three grades (A, B, and C). The best grade devices (A) have an initial accuracy of 0.1%, while the B-grade have 0.2% and the C-grade 0.5%, all with a tempco of 50 ppm/ ̊C guaranteed from −40 ̊C to 125 ̊C.

The LM4051-N utilizes fuse and zener-zap trim of reference voltage during wafer sort to ensure that the prime parts have an accuracy of better than ± 0.1% (A grade) at 25 ̊C.

open-in-new Find other Shunt voltage references
Similar products you might be interested in
open-in-new Compare products
Exact equivalent in functionality and parametrics to the compared device:
LM4050-N ACTIVE 50-ppm/°C precision micropower shunt voltage reference Higher (2 V to 10 V), fixed output voltage

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 2
Type Title Date
* Datasheet LM4051-N Precision Micropower Shunt Voltage Reference datasheet (Rev. D) Sep. 28, 2018
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019

Design & development

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

Design tools & simulation

SNOM473.ZIP (26 KB) - PSpice Model
SNOM474.ZIP (28 KB) - PSpice Model
SNOM522.ZIP (1 KB) - PSpice Model
SNOM524.ZIP (1 KB) - PSpice Model
Shunt voltage reference external resistor quick-start calculator
SHUNT_VOLTAGE_REFERENCE_RESISTOR_CALCULATOR This external resistor quick-start calculator tool lets you easily calculate valid external resistor values relative to voltage reference, supply and load-current bounds. With these inputs, you can instantly view the resulting calculations and use the color-coded indications to understand (...)
  • Case-specific tool to calculate external resistor value associated with shunt voltage reference
  • Input fields for: voltage reference, supply voltage, load current and Iq bound values
  • Real-time effects of input values on schematic
  • Quick indicators notifying user of valid and invalid outputs
  • Error messages (...)
SNVC184.ZIP (53 KB)

CAD/CAE symbols

Package Pins Download
SOT-23 (DBZ) 3 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