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TL431K-89 Datasheet(PDF) 1 Page - Guangdong Kexin Industrial Co.,Ltd |
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TL431K-89 Datasheet(HTML) 1 Page - Guangdong Kexin Industrial Co.,Ltd |
1 / 3 page SMD Type www.kexin.com.cn 1 IC ■ Features ● The output voltage can be adjusted to 36V ● Low dynamic output impedance, its typical value is 0.2Ω ● Trapping current capability is 1 to 100mA ● Low output noise voltage ● Fast on -state response 1.REFERENCE 3.CATHODE 2.ANODE ■ Absolute Maximum Ratings Ta = 25℃ ■ Electrical Characteristics Ta = 25℃(unless otherwise specified) Adjustable Accurate Reference Source TL431K (KL431K) Parameter Symbol Rating Unit Cathode Voltage VKA 37 V Cathode Current Range(Continuous) IKA -100~+150 Reference Input Current Range Iref 0.05~+10 Maximum Power Dissipation PD 500 mW Thermal Resistance from Juntion to Ambient RθJA 250 ℃ /W Operating Junction Temperature Tj 150 Operating Junction Temperature Range Topr 0 ~ 70 Storage Temperature Range Tstg -65 ~ 150 mA ℃ Parameter Symbol Min Typ Max Unit 2.445 2.545 0.5% 2.482 2.508 1% 2.47 2.52 Deviation of Reference Input Voltage Over Temperature(Fig.1) Tmin=0℃ ,Tmax=+70℃ Ratio Of Change in Reference lnput Voltage △ VKA=VREF ~ 10V -1.0 -2.7 to the Change in Cathode Voltage (Fig.2) △ VKA=10V ~ 36V -0.5 -2.0 Reference Input Current Iref 1.5 4 Minmum Cathode Current for Regulation(Fig.1) IKA(min) 0.45 1.0 mA Off-state Cathode Current(Fig.3) IKA(OFF) 0.05 0.5 uA Dynamic Impedance ZKA 0.15 0.5 Ω △ Vref/△VKA IKA=10mA mV/V 0.4 1.2 uA IKA=10mA,R1=10 kΩ,R2=∞ IKA=10mA,R1=10 kΩ,R2=∞ Ta=full Temperature △ Vref/△T 4.5 17 mV VKA=VREF,IKA=10mA Tmin≤Ta≤Tmax Iref / △T VKA=VREF VKA=40V, VREF=0 Test Conditions Reference Input Voltage(Fig.1) Vref RanK V 2.495 VKA=VREF, IKA=1 to 100mA,f≤1.0KHz VKA=VREF,IKA=10mA Deviation Of Reference Input Current Over Full Temperature Range(Fig.2) ■ Marking Marking 431 1.70 0.1 0.42 0.1 0.46 0.1 |
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