器件名称: TL431CD
功能描述: Programmable voltage reference
文件大小: 174.69KB 共15页
简 介:TL431
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 Z TO-92 (Plastic package)
Description
The TL431 is a programmable shunt voltage reference with guaranteed temperature stability over the entire operating temperature range. The output voltage may be set to any value between 2.5 V and 36 V with two external resistors. The TL431 operates with a wide current range from 1 to 100 mA with a typical dynamic impedance of 0.22 Ω. D SO-8 (Batwing plastic micropackage)
March 2008
Rev 5
1/15
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Schematic diagrams
TL431
1
Schematic diagrams
Figure 1. TO-92 pin connections (top view)
Cathode Anode Reference
1 2 3
Figure 2.
SO-8 batwing pin connections (top view)
8 7 6 5
1 - Cathode 2 - Anode 3 - Anode 4 - N.C. 5 - N.C. 6 - Anode 7 - Anode 8 - Reference
1 2 3 4
Figure 3.
TL431 block diagram
Cathode Vref + Vref Anode
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TL431
Absolute maximum ratings and operating conditions
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Absolute maximum ratings and operating conditions
Table 1.
Symbol VKA Ik Iref Pdiss Tstg
Absolute maximum ratings
Parameter Cathode to anode voltage Continuous cathode current range Reference input current range Power dissipation (1) TO-92 SO-8 batwing Storage temperature range HBM: human body model (2) Value 37 -100 to +150 -0.05 to +10 Unit V mA mA mW °C
625 960 -65 to +150 2000 200 1500
ESD
MM: machine model (3) CDM: charged device model
(4……
