TL431 family
Adjustable precision shunt regulators
Rev. 6 — 9 January 2019
Product data sheet
1. Product profile
1.1. General description
Three-terminal shunt regulator family with an output voltage range between
Vref = 2.495 V and 36 V, to be set by two external resistors.
Table 1. Product overview
Reference voltage Temperature range (Tamb)
tolerance (Vref)
0 °C to 70 °C
-40 °C to 85 °C
2.0 %
TL431CDBZR
TL431IDBZR
1.0 %
TL431ACDBZR
TL431AIDBZR
0.5 %
TL431BCDBZR
TL431BIDBZR
-40 °C to 125 °C
TL431QDBZR
TL431FDT
TL431MFDT
TL431AQDBZR
TL431AFDT
TL431AMFDT
TL431BQDBZR
TL431BFDT
TL431BMFDT
Pinning configuration
(see Table 5)
normal pinning
normal pinning
mirrored pinning
normal pinning
normal pinning
mirrored pinning
normal pinning
normal pinning
mirrored pinning
1.2. Features and benefits
• Programmable output voltage up to 36 V
• Three different reference voltage tolerances:
• • Standard grade: 2 %
• A-Grade: 1 %
• B-Grade: 0.5 %
• Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C)
• Low output noise
• Typical output impedance: 0.2 Ω
• Sink current capability: 1 mA to 100 mA
• AEC-Q100 qualified (grade 1)
