LM4040 Datasheet PDF – Shunt Voltage Reference

Part Number: LM4040

Function: Precision Micropower Shunt Voltage Reference

Package: SOT-23, SC-70, TO-92

Manufacturer: Texas Instruments, Microchip Semiconductor, National Semiconductor


LM4040 Shunt Voltage Reference


The LM4040 series of shunt voltage references are versatile, easy-to-use references that cater to a vast array of applications.
The 2-pin fixed-output device requires no external capacitors for operation and is stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low temperature coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures.

The LM4040 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from 0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for their applications.

Packaged in space-saving SC-70 and SOT-23-3 packages and requiring a minimum current of 45 μA (typ), the LM4040 also is ideal for portable applications. The LM4040xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The LM4040xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.


1. Small SOT-23 Package
2. No Output Capacitor Required
3. Tolerates Capacitive Loads
4. Fixed Reverse-Breakdown Voltages of 1.225V, 2.500V, 4.096V, and 5.000V
5. Adjustable Reverse-Breakdown Version

LM4040 datasheet


1. Data-Acquisition Systems
2. Power Supplies and Power-Supply
3. Instrumentation and Test Equipmen
4. Process Controls
5. Precision Audio
6. Automotive Electronics
7. Energy Management
8. Battery-Powered Equipment


Official Homepage: https://www.ti.com/product/LM4040

LM4040 Datasheet PDF Download

LM4040 pdf

Other data sheets are available within the file:


LM4041CIM3-ADJ Datasheet – Shunt Voltage Reference – National

Part Number: LM4041CIM3-ADJ

Function : Precision Micropower Shunt Voltage Reference

Manufacturer: National Semiconductor

General Description

Ideal for space critical applications, the LM4041 precision voltage reference is available in the sub-miniature (3 mm x 1.3 mm) SOT-23 surface-mount package. The LM4041’s advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4041 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 LM4041-1.2 and the LM4041-ADJ. Both versions have a maximum operating current of 12 mA. The LM4041 utilizes fuse and zener-zap reverse breakdown or reference voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% (A grade) at 25˚C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.

LM4041CIM3-ADJ Datasheet

LM4041CIM3-ADJ Datasheet


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