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TL431中文资料及PDF中文数据手册

发布者:正大伟业  |  浏览次数:221  |  发布日期:2018-07-27 15:25:15

介绍: 

TL431是一个有良好的热稳定性能的三端可调分流基准电压源。它的输出电压用两个电阻就可以任意地设置到从Vref(2.5V)到36V范围内的任何值。该器件的典型动态阻抗为0.2Ω,在很多应用中可以用它代替齐纳二极管,例如,数字电压表,运放电路、可调压电源,开关电源等等。


特点:

•可编程输出电压为36V

 •电压参考误差:±0.4% ,典型值@25℃(TL431B) 

 •低动态输出阻抗,典型0.22Ω 

 •负载电流能力1.0mA to 100mA

 •等效全范围温度系数50 ppm/℃典型

 • 温度补偿操作全额定工作温度范围

 •低输出噪声电压


图1 TO92封装引脚图

图1 TO92封装引脚图


图2 8脚封装引脚功能

图2 8脚封装引脚功能


图3 SOP-8 贴片封装引脚图

图3 SOP-8 贴片封装引脚图


图4 TL431符号及内部方框图

图4 TL431符号及内部方框图


图5 TL431内部电路图

图5 TL431内部电路图




MAXIMUM RATINGS (Full operating ambient temperature range applies, unless

otherwise noted.)最大额定值(环境温度范围适用,除非另有说明。 )



Rating 参数

Symbol 符号

数值

Unit 单位

Cathode to Anode Voltage阴极阳极电压

VKA

37

V

Cathode Current Range, Continuous 阴极电流范围,连续

IK

–100 to +150

mA

Reference Input Current Range, Continuous 参考输入电流范围,连续

Iref

–0.05 to +10

mA

OperatingJunctionTemperature工作结温

TJ

150

Operating Ambient Temperature Range 操作环境温度范围

TL431I,TL431AI, TL431BITA

–40 to +85

TL431C, TL431AC, TL431BC 0 to +70

StorageTemperature Range储存温度范围

Tstg

–65 to +150

Total Power Dissipation总耗散功率 常温@ TA = 25℃ Derate above 25℃ Ambient Temperature

D, LP后缀塑封PD0.70W
P后缀塑封1.10
DM 后缀塑封0.52

Total Power Dissipation @ TC = 25℃ Derate above 25℃ Case Temperature 总耗散功率 外壳温度

D, LP后缀塑封PD

1.5

W
P后缀塑封3.0


RECOMMENDED OPERATING CONDITIONS建议操作条件

Condition 条件

Symbol 符号Min最大值Max最小值Unit 单位

Cathode to Anode Voltage 阴极阳极电压

VKAVref36V

Cathode Current 阴极电流

IK1.0100mA


 

THERMAL CHARACTERISTICS热特性

Characteristic 特性

Symbol 符号

D, LP后缀封装 P后缀封装 DM 后缀封装Unit 单位
Thermal Resistance, Junction–to–Ambient 热阻,结点到环境RqJA178114240℃/W
Thermal Resistance, Junction–to–Case 热阻,结到外壳RqJC8341℃/W


ELECTRICAL CHARACTERISTICS(TA=25℃, unless otherwise noted.)电气特性(25℃ ,除非另有说明。)

 

Characteristic 特性

Symbol 符号

TL431ITL431CUnit 单位 
最小值典型值最大值最小值典型值最大值
Reference Input Voltage (Figure 1)参考输入电压 VKA = Vref, IK = 10 mA  TA = 25℃Vref2.44 2.495 2.55 2.442.4952.55 V
TA = Tlow to Thigh (Note 1)2.412.582.4232.567
Reference Input Voltage Deviation Over Temperature Range参考输入电压偏差温度范围 (Figure 1, Notes 1, 2) VKA= Vref, IK = 10 mADVref7.0303.017mV
Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage IK = 10 mA (Figure 2),△VKA = 10 V to Vref △Vref
△VKA
– –1.4–2.7 – –1.4 –2.7mV/V
△VKA=36V to 10 V-–1.0–2.0–1.0–2.0
Reference Input Current (Figure 2) 参考输入电流IK = 10 mA, R1 = 10k, R2 = ∞ TA = 25℃Iref– 1.8 4.0 – 1.84.0μA
TA = Tlow to Thigh (Note 1)6.5 –5.2
Reference Input Current Deviation Over Temperature Range参考输入电流偏差温度范围 (Figure 2, Note 1, 4) IK = 10 mA, R1 = 10 k, R2 = ∞DIref0.82.50.41.2μA
Minimum Cathode Current For Regulation VKA = Vref (Figure 1) 最小阴极电流调节Imin0.51.00.51.0mA
Off–State Cathode Current (Figure 3) VKA = 36 V, Vref = 0 V 断态阴极电流Ioff26010002601000nA
Dynamic Impedance (Figure 1, Note 3)动态阻抗 VKA = Vref, DIK=1.0mA to 100mA f 3 1.0kHz|ZKA|0.220.50.220.5Ω


 

 

ELECTRICAL CHARACTERISTICS (TA = 25℃, unless otherwise noted.)电气特性(25℃,除非另有说明。)

Characteristic 特性

 Symbol 符号

TL431AITL431ACTL431BI

Unit 单位 

最小值典型值最大值最小值典型值最大值最小值典型值最大值
Reference Input Voltage (Figure 1)参考输入电压 VKA = Vref, IK = 10 mATA = 25℃Vref2.472.495 2.52 2.47 2.495 2.52 2.483 2.495 2.507V
TA = Tlow to Thigh2.442.552.4532.5372.4752.4952.515
Reference Input Voltage Deviation Over Temperature Range (Figure 1, Notes 1, 2) 参考输入电压偏差温度范围VKA= Vref, IK = 10 mADVref7.0303.0173.017mV
Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage IK = 10 mA (Figure 2), △VKA = 10 V to Vref△Vref
△VKA
– –1.4 –2.7 – –1.4 –2.7 – –1.4 –2.7mV/V
△VKA = 36 V to 10 V–1.0–2.0–1.0–2.0–1.0–2.0
Reference Input Current (Figure 2)参考输入电流 IK = 10 mA, R1 = 10 k, R2 = ∞ TA = 25℃Iref–  –1.8 4.0– 1.8 4.0 – 1.1 2.0μA
TA = Tlow to Thigh (Note 1)

6.55.24.0
Reference Input Current Deviation Over Temperature Range (Figure 2, Note 1) IK = 10 mA, R1 = 10k, R2 = ∞ 参考输入电流偏差温度范围DIref0.82.50.41.20.82.5μA
Minimum Cathode Current For Regulation 最小阴极电流调节VKA = Vref (Figure 1)Imin0.51.00.51.00.51.0mA
Off–State Cathode Current(Figure 3) 断态阴极电流VKA = 36V, Vref =0VIoff26010002601000230500nA
Dynamic Impedance (Figure 1, Note 3) VKA = Vref, DIK = 1.0 mA to 100 mA f 3 1.0 kHz 动态阻抗|ZKA|0.220.50.220.50.140.3Ω


TL431中文数据手册下载:

TL431.pdf