TL431
TL431 is Adjustable precision shunt regulator manufactured by NXP Semiconductors.
SOT23
TL431 family
Adjustable precision shunt regulator
Rev. 5
- 01 September 2015
Product data sheet
1. Product profile
1.1 General description
Three-terminal shunt regulator family with an output voltage range between Vref and 36 V, to be set by two external resistors.
- The TL431x DBZR types feature an enhanced stability area with a very low load capacity requirement.
- The TL431x FDT types offer an enhanced stability area and a higher
Electro Magnetic Interference (EMI) ruggedness, for example, for Switch Mode Power Supply (SMPS) applications.
- The TL431x SDT types are designed for standard requirements and linear applications.
Table 1. Product overview
Reference voltage tolerance (Vref)
Temperature range (Tamb)
0C to 70 C
- 40 C to 85 C
2 % TL431CDBZR TL431IDBZR
1 % TL431ACDBZR TL431AIDBZR
0.5 %
TL431BCDBZR TL431BIDBZR
Pinning
- 40 C to 125 C configuration
(see Table 3)
TL431QDBZR normal pinning
TL431FDT normal pinning
TL431MFDT...
Representative TL431 image (package may vary by manufacturer)