Product details

VO (V) 1.225 Reference voltage Adjustable, Fixed Initial accuracy (Max) (%) 0.1, 0.2, 0.5 VO adj (Min) (V) 1.24 VO adj (Max) (V) 10 Iz for regulation (Min) (uA) 60 Rating Catalog Temp coeff (Max) (ppm/ degree C) 50 Operating temperature range (C) -40 to 85 Iout/Iz (Max) (mA) 12
VO (V) 1.225 Reference voltage Adjustable, Fixed Initial accuracy (Max) (%) 0.1, 0.2, 0.5 VO adj (Min) (V) 1.24 VO adj (Max) (V) 10 Iz for regulation (Min) (uA) 60 Rating Catalog Temp coeff (Max) (ppm/ degree C) 50 Operating temperature range (C) -40 to 85 Iout/Iz (Max) (mA) 12
SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37
  • 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)
  • 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)

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.

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.

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Technical documentation

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Type Title Date
* Data sheet LM4051-N Precision Micropower Shunt Voltage Reference datasheet (Rev. D) 28 Sep 2018
Application note Precision Current Sources and Sinks Using Voltage References 30 Jun 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019

Design & development

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Simulation model

LM4051_A1P2 PSpice Transient Model

SNOM473.ZIP (26 KB) - PSpice Model
Simulation model

LM4051_ADJA1P212 PSpice Transient Model

SNOM474.ZIP (28 KB) - PSpice Model
Simulation model

LM4051_A1P2 Unencrypted PSpice Transient Model

SNOM522.ZIP (1 KB) - PSpice Model
Simulation model

LM4051_ADJA1P212 Unencrypted PSpice Transient Model

SNOM524.ZIP (1 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Calculation tool

SHUNT_VOLTAGE_REFERENCE_RESISTOR_CALCULATOR — Shunt voltage reference external resistor quick-start 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 (...)
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SOT-23 (DBZ) 3 View options

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