SO T2 TL431 family
Adjustable precision shunt regulator
Rev. 4 -- 30 June 2011 Product data sheet 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. 3 The TL431xDBZR types feature an enhanced stability area with a very low
load capacity requirement. The TL431xFDT types offer an enhanced stability area and a higher
ElectroMagnetic Interference (EMI) ruggedness, for example, for Switch Mode Power Supply (SMPS) applications. The TL431xSDT types are designed for standard requirements and linear
applications.
Table 1. Product overview Temperature range (Tamb) 0 to 70 C TL431CDBZR 40 to 85 C TL431IDBZR 40 to 125 C TL431QDBZR TL431FDT TL431MFDT TL431SDT TL431MSDT 1% TL431ACDBZR TL431AIDBZR TL431AFDT TL431AMFDT TL431ASDT TL431AMSDT 0.5 % TL431BCDBZR TL431BIDBZR TL431BFDT TL431BMFDT TL431BSDT TL431BMSDT Pinning configuration (see Table 5) normal pinning normal pinning mirrored pinning normal pinning mirrored pinning normal pinning mirrored pinning normal pinning mirrored pinning normal pinning mirrored pinning normal pinning mirrored pinning Reference voltage tolerance (Vref) 2% TL431AQDBZR normal pinning TL431BQDBZR normal pinning NXP Semiconductors TL431 family
Adjustable precision shunt regulator 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: 6 mV (in a range of 0 C up to 70 C) Low output noise Typical output impedance: 0.2 Sink current capability: 1 mA to 100 mA AEC-Q100 qualified (grade 1) 3. Applications Shunt regulator Precision current limiter Precision constant current sink Isolated feedback loop for Switch Mode Power Supply (SMPS) 4. Quick reference data
Table 2. Symbol VKA IK Vref Quick reference data Parameter cathode-anode voltage cathode current reference voltage VKA = Vref; IK = 10 mA; Tamb = 25 C 2440 2470 2483 2495 2495 2495 2550 2520 2507 mV mV mV Conditions Min Vref 1 Typ Max 36 100 Unit V mA Standard-Grade (2 %) A-Grade (1 %) B-Grade (0.5 %) TL431_FAM All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 4 -- 30 June 2011 2 of 27 NXP Semiconductors TL431 family
Adjustable precision shunt regulator 5. Ordering information
Table 3. Ordering information Package Name TL431CDBZR TL431IDBZR TL431QDBZR TL431FDT TL431MFDT TL431SDT TL431MSDT TL431ACDBZR TL431AIDBZR TL431AQDBZR TL431AFDT TL431AMFDT TL431ASDT TL431AMSDT TL431BCDBZR TL431BID …
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