shunt regulator. TL431 Datasheet

TL431 regulator. Datasheet pdf. Equivalent

Part TL431
Description Adjustable precision shunt regulator
Feature SOT23 TL431 family Adjustable precision shunt regulator Rev. 5 — 01 September 2015 Product data sh.
Manufacture NXP
Datasheet
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TL431
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 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
Reference
voltage
tolerance (Vref)
Temperature range (Tamb)
0C 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
mirrored pinning
TL431SDT
normal pinning
TL431MSDT
mirrored pinning
TL431AQDBZR normal pinning
TL431AFDT
normal pinning
TL431AMFDT mirrored pinning
TL431ASDT
normal pinning
TL431AMSDT mirrored pinning
TL431BQDBZR normal pinning
TL431BFDT
normal pinning
TL431BMFDT mirrored pinning
TL431BSDT
normal pinning
TL431BMSDT mirrored pinning



TL431
NXP Semiconductors
TL431 family
Adjustable precision shunt regulator
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: 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)
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.
Symbol
VKA
IK
Vref
Quick reference data
Parameter
cathode-anode voltage
cathode current
reference voltage
Standard-Grade (2 %)
A-Grade (1 %)
B-Grade (0.5 %)
Conditions
VKA = Vref;
IK = 10 mA;
Tamb = 25 C
Min Typ Max Unit
Vref -
36 V
1-
100 mA
2440
2470
2483
2495
2495
2495
2550
2520
2507
mV
mV
mV
TL431 family
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 01 September 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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