TL431 family
Adjustable precision shunt regulators
Rev. 6 — 9 January 2019
Product data sheet
1. Product profile
1.1....
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)
Nexperia
TL431 family
Adjustable precision shunt
regulators
1.3. Applications
Shunt
regulator Precision current limiter Precision constant current sink Isolated feedback loop for Switch Mode Power Supply (SMPS)
1.4. Quick reference data
Table 2. Quick reference data Symbol Parameter
Conditions
VKA
cathode-anode voltage
IK
catho...