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TL431BCDBVT 数据表(PDF) 16 Page - Texas Instruments |
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TL431BCDBVT 数据表(HTML) 16 Page - Texas Instruments |
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16 / 77 page ![]() 150 Ω IKA R1 = 10 kΩ R2 CL VBATT IKA CL VBATT 150 Ω TEST CIRCUIT FOR CURVE A TEST CIRCUIT FOR CURVES B, C, AND D + − + − 50 40 10 0 0.001 0.01 0.1 1 70 90 100 10 30 80 60 20 TA = 25°C B Stable Stable A V KA = Vref B VKA = 5 V C VKA = 10 V D VKA = 15 Vf CL − Load Capacitance − µF A C D 3 2 1 0 −1 0 1 2 3 4 4 5 6 5 6 7 Input Output TA = 25°C t − Time − µs 220 Ω 50 Ω GND Output Pulse Generator f = 100 kHz 0.1 1 k 10 k 100 k 1 M 10 M 1 f − Frequency − Hz 10 100 IKA = 10 mA TA = 25°C 1 kΩ 50 Ω GND Output IKA + − TL431, TL431A, TL431B TL432, TL432A, TL432B SLVS543O – AUGUST 2004 – REVISED JANUARY 2015 www.ti.com Typical Characteristics (continued) Figure 13. Test Circuit for Reference Impedance Figure 12. Reference Impedance vs Frequency Figure 15. Test Circuit for Pulse Response Figure 14. Pulse Response The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C, and D, R2 and V+ are adjusted to establish the initial VKA and IKA conditions, with CL = 0. VBATT and CL then are adjusted to determine the ranges of stability. Figure 16. Stability Boundary Conditions for All TL431 and TL431A Devices Figure 17. Test Circuits for Stability Boundary Conditions (Except for SOT23-3, SC-70, and Q-Temp Devices) 16 Submit Documentation Feedback Copyright © 2004–2015, Texas Instruments Incorporated Product Folder Links: TL431 TL431A TL431B TL432 TL432A TL432B |
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