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TL431のメーカーはSTMicroelectronicsです、この部品の機能は「PROGRAMMABLE VOLTAGE REFERENCE」です。 |
部品番号 | TL431 |
| |
部品説明 | PROGRAMMABLE VOLTAGE REFERENCE | ||
メーカ | STMicroelectronics | ||
ロゴ | |||
このページの下部にプレビューとTL431ダウンロード(pdfファイル)リンクがあります。 Total 21 pages
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, 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 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, Tmin≤ Tamb≤ Tmax
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 | |||
ページ | 合計 : 21 ページ | ||
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PDF ダウンロード | [ TL431 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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