TL431 Datasheet – Shunt Regulator Diode – Motorola

Part Number : TL431

Function : Programmable Precision References

Package : TO 92, DIP 8 Pin, DIP 8 Pin Type

Manufactures : Motorola

Images and Pinouts :
TL431 Datasheet

Description :

The TL431, A, B integrated circuits are three–terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from V refto 36 V with two external resistors. These devices exhibit a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 Ω. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 V reference makes it convenient to obtain a stable reference from 5.0 V logic supplies, and since the TL431, A, B operates as a shunt regulator, it can be used as either a positive or negative voltage reference.


1.  Programmable Output Voltage to 36 V
2. Voltage Reference Tolerance: ±0.4%, Typ @ 25°C (TL431B)
3. Low Dynamic Output Impedance, 0.22 ΩTypical
4. Sink Current Capability of 1.0 mA to 100 mA
5. Equivalent Full–Range Temperature Coefficient of 50 ppm/°C Typical
6. Temperature Compensated for Operation over Full Rated Operating Temperature Range
7. Low Output Noise Voltage

Block Diagram

TL431 Diagram

TL431 Datasheet




C1093 Datasheet – Adjustable Precision Shunt Regulator – Renesas

Part Number : C1093

Function : Adjustable Precision Shunt Regulator

Package : TO-92, SOT-89 Type

Manufacturers : Renesas Electronics

Pinouts :
C1093 datasheet

Description :

The uPC1093 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 within the file : UPCC1093, C1093G, C1093J, C1093T, C1093TA

C1093 Datasheet PDF Download

C1093 pdf