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:


C1093 Datasheet – Adjustable Precision Shunt Regulator

This is one of the Shunt Regulator types.

Part Number: C1093

Function: Adjustable Precision Shunt Regulator

Package: TO-92, SOT-89 Type

Manufacturer: Renesas Electronics

See the preview image and the PDF file for more information.

C1093 Pinouts

C1093 datasheet


The uPC1093, C1093 are adjustable precision shunt regulators with guaranteed thermal stability. The output voltage can be set to any value between reference voltage (2.495 V) and 36 V by two external resistors.

These ICs can apply to error amplifier of switching regulators.


1. High Accuracy VREF = 2.495 V ± 2 %
2. Low Temperature Coefficient DVREF/DT £ 100 ppm/°C
3. Adjustable Output Voltage by two External Resistors VREF £ VO £ 36 V
4. Low Dynamic Impedance | ZKA | = 0.1 WTYP.

Other data sheets are available within the file: UPC1093, C1093G, C1093J, C1093T, C1093TA

C1093 Datasheet PDF Download

C1093 pdf