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TL431 の電気的特性と機能

TL431のメーカーはSTMicroelectronicsです、この部品の機能は「PROGRAMMABLE VOLTAGE REFERENCE」です。


製品の詳細 ( Datasheet PDF )

部品番号 TL431
部品説明 PROGRAMMABLE VOLTAGE REFERENCE
メーカ STMicroelectronics
ロゴ STMicroelectronics ロゴ 




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TL431 Datasheet, TL431 PDF,ピン配置, 機能
TL431
TL432
Programmable voltage reference
Features
Adjustable output voltage: 2.5 to 36 V
Sink current capability: 1 to 100 mA
Typical output impedance: 0.22 Ω
1% and 2% voltage precision
Automotive temp. range - 40 °C to +125 °C
Applications
Power supply
Industrial
Automotive
Description
The TL431 and TL432 are programmable shunt
voltage references with guaranteed temperature
stability over the entire operating temperature
range. The device temperature range is extended
for the automotive version from -40 °C up to
+125 °C. The output voltage can be set to any
value between 2.5 and 36 V with two external
resistors. The TL431 and TL432 operate with a
wide current range from 1 to 100 mA with a typical
dynamic impedance of 0.22 Ω.
Datasheet production data
Z
TO-92
(Plastic package)
L
SOT23-3
L
SOT23-5
C
SOT323-6
D
SO-8
(Batwing plastic micropackage)
December 2012
This is information on a product in full production.
Doc ID 4467 Rev 11
1/21
www.st.com
21

1 Page





TL431 pdf, ピン配列
TL431, TL432
1 Schematic diagrams
Figure 1. TO-92 pin connections (top view)
Schematic diagrams
Figure 2.
SO-8 batwing pin connections (top view)
Cathode 1
Anode 2
3
NC 4
SO8
8 Ref
7 Anode
6
5 NC
Figure 3. SOT23-5 and SOT23-3 pin connections (top view)
NC 1
NC 2
Cathode 3
SOT23-5
5 Anode
4 Ref
SOT23-3
Cathode 1
Ref 2
3 Anode
TL431
TL431
Figure 4. SOT323-6 pin connections (top view)
TL432
Figure 5. TL431 and TL432 block diagram
Cathode
Ref
Vref
Anode
Doc ID 4467 Rev 11
3/21


3Pages


TL431 電子部品, 半導体
Electrical characteristics
TL431, TL432
Table 4.
Symbol
TL431I/TL432I (Tamb = 25°C unless otherwise specified)
Parameter
TL431I/TL432I
Min. Typ. Max.
TL431AI/TL432AI
Min. Typ. Max.
Unit
Reference input voltage
Vref VKA = Vref, Ik = 10 mA, Tamb = 25° C
Tmin Tamb Tmax
2.44 2.495 2.55 2.47 2.495 2.52 V
2.41 2.58 2.44 2.55
ΔVref
Reference input voltage deviation over temperature
range (1)
VKA = Vref, Ik =10 mA, TminTambTmax
7 30
7 30 mV
Δ----V---r--e---f
ΔVka
Ratio of change in reference input voltage to change
in cathode to anode voltage
Ik = 10 mA, ΔVKA = 10 V to Vref
ΔVKA = 36 V to 10 V
-2.7 -1.4
-2 -1
-2.7 -1.4
-2 -1
mV/V
Reference input current
Iref
Ik = 10 mA, R1 = 10 kΩ, R2 =
Tamb = 25° C
Tmin Tamb Tmax
1.8 4
6.5
1.8
4
6.5
µA
Reference input current deviation over temperature
range
ΔIref Ik = 10 mA, R1 = 10 kΩ, R2 =
Tmin Tamb Tmax
0.8 2.5
0.8 1.2 µA
Minimum cathode current for regulation
Imin VKA = Vref
0.5 1
0.5 0.7 mA
Ioff
ZKA
Off-state cathode current
Dynamic impedance (2)
VKA = Vref, Δ Ik = 1 to 100 mA, f 1 kHZ
2.6 1000
0.22 0.5
2.6 1000 nA
0.22 0.5 Ω
1. See definition of Section 3.1: Reference input voltage deviation over temperature range below.
2. The dynamic impedance is defined as |ZKA| = Δ-----V----K----A--
ΔIk
6/21 Doc ID 4467 Rev 11

6 Page



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共有リンク

Link :


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PROGRAMMABLE PRECISION REFERENCES

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PROGRAMMABLE PRECISION REFERENCES

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