TLV431数据手册集成电路（IC）的电压基准规格书PDF

描述 Description

The TLV431 is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 20mA. The output voltage may be set to any chosen voltage between 1.24 and 18 volts by selection of two external divider resistors. The TLV431 can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. The TLV431 is available in 2 grades with initial tolerances of 1% and 0.5% for the A and B grades respectively.

特性 Features

Low Voltage Operation ........... VREF = 1.24V
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\t\tTemperature range -40 to 125°C
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\t\tReference Voltage Tolerance at 25°C
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\t\t0.5%............TLV431B
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\t\t1%...............TLV431A
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\t\tTypical temperature drift
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\t\t4 mV (0°C to 70°C)
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\t\t6 mV (-40°C to 85°C)
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\t\t11mV (-40°C to 125°C)
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\t\t80μA Minimum cathode current
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\t\t0.25Ω typical Output Impedance
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\t\tAdjustable Output Voltage ..... VREF to 18V

应用 Application

Opto-coupler linearisation
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\t\tLinear regulators
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\t\tImproved Zener
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\t\tVariable reference