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TL1431MFKB Datasheet(PDF) 14 Page - Texas Instruments |
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TL1431MFKB Datasheet(HTML) 14 Page - Texas Instruments |
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14 / 27 page  www.ti.com + − TL1431 12 V 6.8 k Ω 5 V +0.5% 10 k Ω 10 k Ω 0.1% 10 k Ω 0.1% VCC X Not Used TL598 Feedback V(BATT) R3 R4 R1A R2A R1B R2B TL1431 Low Limit + 1 ) R1B R2B V I(ref) High Limit + 1 ) R1A R2A V I(ref) LED on When Low Limit < V(BATT) < High Limit TL1431 TL1431 12 V 680 Ω 2 k Ω R Off On C Delay + R C I I 12 V (12 V) * V I(ref) V(BATT) TL1431 IO RS 0.1% I O + V I(ref) R S V(BATT) R1 RCL 0.1% TL1431 I O + V I(ref) R CL ) IKA IO R1 + V (BATT) I O h FE ) IKA TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062L – DECEMBER 1991 – REVISED OCTOBER 2007 Figure 24. PWM Converter With 0.5% Reference Figure 26. Delay Timer A. Select R3 and R4 to provide the desired LED intensity and cathode current ≥1 mA to the TL1431. Figure 25. Voltage Monitor Figure 27. Precision Current Limiter Figure 28. Precision Constant-Current Sink 14 Submit Documentation Feedback Copyright © 1991–2007, Texas Instruments Incorporated Product Folder Link(s): TL1431 |
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