TL431 Datasheet PDF - Diodes
| Part Number | TL431 | |
| Description | ADJUSTABLE PRECISION SHUNT REGULATOR | |
| Manufacturers | Diodes | |
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There is a preview and TL431 download ( pdf file ) link at the bottom of this page. Total 14 Pages | ||
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TL431/TL432
ADJUSTABLE PRECISION SHUNT REGULATOR
Description
The TL431 and TL432 are three terminal adjustable shunt
regulators offering excellent temperature stability and output
current handling capability up to 100mA. The output voltage
may be set to any chosen voltage between 2.5 and 36 volts
by selection of two external divider resistors.
The devices can be used as a replacement for zener diodes
in many applications requiring an improvement in zener
performance. Diodes’ TL431 has the same electrical
specifications as the industry standard ‘431 and is available
in 2 grades with initial tolerances of 1% and 0.5% for the
A and B grades respectively.
Features
• Temperature range -40 to +125ºC
• Reference Voltage Tolerance at 25°C
• TL431A: 2.495V ± 1.0%
• TL431B: 2.495V ± 0.5%
• Low Output Noise
• 0.2Ω Typical Output Impedance
• Sink Current Capability: 1mA to 100mA
• Adjustable Output Voltage: VREF to 36V
• All devices are:
• Totally Lead-Free & Fully RoHS compliant
(Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device
(Note 3)
Pin Assignments
TL431
(Top View)
CATHODE 1
3 ANODE
REF 2
SOT23
(Top View)
NC
Leave floating or
connect to pin 5
2
5 ANODE
CATHODE 3
4 REF
SOT25
(Top View)
CATHODE 1
ANODE 2
ANODE 3
NC 4
8 REF
7 ANODE
6 ANODE
5 NC
SO-8
SO-8 is a future product
Applications
• Opto-Coupler Linearisers
• Shunt Regulators
• Improved Zener
• Variable Reference
TL432
(Top View)
REF 1
CATHODE 2
3 ANODE
SOT23
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free,
"Green" and Lead-Free.
3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
TL431
*SO-8 is a future package
Document number: DS35044 Rev. 6 - 2
1 of 14
www.diodes.com
April 2012
© Diodes Incorporated
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TL431/TL432
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics
26 00
25 80
25 60
IKA = 10mA
VKA = VREF
TA = 25°C
25 40
25 20
25 00
24 80
24 60
24 40
24 20
24 00
-55
-35 -15 5 25 45 65 85 105 125
TA Free Air Temperature (°C)
Reference Voltage vs. Free Air Temperature
15 0
10 0
VKA = VREF
TA = 25°C
50
0.2
0.1 5
R1 = 10KΩ
R2 = ∞
IKA = 10mA
0.1
0.0 5
0
-55 -35 -15 5 25 45 65 85 105 125
TA Free Air Temperature (°C)
Reference Current vs. Free Air Temperature
20 0
VKA = VREF
TA = 25°C
10 0
IKMIN
0
0
-50
-100
-2
-1 0 1 2
VKA Cathode Voltage (V)
Cathode Current vs. Cathode Voltage
3
0.5 0
0.4 5
0.4 0
VKA = 36V
VREF = 0
0.3 5
0.3 0
0.2 5
0.2 0
0.1 5
0.1 0
0.0 5
0.0 0
-75 -50 -25 0 25 50 75 100 125
TA Free Air Temperature (°C)
Off-State Cathode Current vs. Free Air Temperature
-100
-2
-0.2
-0.3
-0.4
-1 0 1 2
VKA Cathode Voltage
Cathode Current vs. Cathode Voltage
3
VKA = 3V to 36V
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-50 -25 0 25 50 75 100 125
TA Free Air Temperature (C)
Ratio of Delta Reference Voltage to Delta Cathode
Voltage vs. Free Air Temperature
TL431
*SO-8 is a future package
Document number: DS35044 Rev. 6 - 2
5 of 14
www.diodes.com
April 2012
© Diodes Incorporated
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TL431 electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Product Image and Detail view |  1. Precision References - ON Semi [ Learn More ] | |
| Download | [ TL431.PDF Datasheet ] | |
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