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PDF TL431 Data sheet ( Hoja de datos )
| Número de pieza | TL431 | |
| Descripción | Adjustable precision shunt regulator | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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 1. Precision Shunt Regulator - TI  Hay una vista previa y un enlace de descarga de TL431 (archivo pdf) en la parte inferior de esta página. Total 27 Páginas | ||
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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)
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
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
1 page  
NXP Semiconductors
TL431 family
Adjustable precision shunt regulator
4. Marking
Table 5. Marking codes
Type number
Marking code[1]
TL431CDBZR
CA*
TL431IDBZR
CB*
TL431QDBZR
CC*
TL431FDT
AR*
TL431MFDT
AU*
TL431SDT
RM*
TL431MSDT
LR*
TL431ACDBZR
CD*
TL431AIDBZR
CE*
TL431AQDBZR
CF*
TL431AFDT
AS*
TL431AMFDT
AV*
[1] * = placeholder for manufacturing site code.
Type number
TL431ASDT
TL431AMSDT
TL431BCDBZR
TL431BIDBZR
TL431BQDBZR
TL431BFDT
TL431BMFDT
TL431BSDT
TL431BMSDT
-
-
-
Marking code[1]
RL*
LQ*
CG*
CH*
CJ*
AT*
AW*
MA*
MB*
-
-
-
5. Functional diagram
The TL431 family comprises a range of 3-terminal adjustable shunt regulators, with
specified thermal stability over applicable automotive and commercial temperature
ranges. The output voltage may be set to any value between Vref (approximately 2.5 V)
and 36 V with two external resistors (see Figure 8). These devices have a typical output
impedance of 0.2 . Active output circuitry provides a very sharp turn-on characteristic,
making these devices excellent replacements for Zener diodes in many applications like
on-board regulation, adjustable power supplies and switching power supplies.
CATHODE
REF
Vref
Fig 1. Functional diagram
ANODE
006aab569
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.
5 of 27
5 Page 
NXP Semiconductors
TL431 family
Adjustable precision shunt regulator
2.60
Vref
(V)
2.56
006aab571
2.52
2.48
2.44
2.40
−75
−25
25
75 125
Tamb (°C)
Fig 3.
IK = 10 mA; VKA = Vref
Reference voltage as a function of ambient
temperature; typical values
INPUT
150
IK
(mA)
100
006aab572
50
0
−50
−100
−2 −1
0
1
2
3
VKA (V)
Fig 4.
VKA = Vref; Tamb = 25 C
Cathode current as a function of
cathode-anode voltage; typical values
VKA
IK
Vref
IK = 10 mA; VKA = Vref
Fig 5. Test circuit to Figure 3 and Figure 4
GND
006aab573
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.
11 of 27
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet TL431.PDF ] | |
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