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LM3554 Scheda tecnica(PDF) 8 Page - Texas Instruments |
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LM3554 Scheda tecnica(HTML) 8 Page - Texas Instruments |
8 / 47 page 8 LM3554 SNVS549C – JUNE 2009 – REVISED FEBRUARY 2016 www.ti.com Product Folder Links: LM3554 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Typical Characteristics (continued) VIN = 3.6 V, LEDs are Lumiled PWF-4, COUT = 10 µF, CIN = 4.7 µF, L = FDSE0312-2R2 (2.2 µH, RL = 0.15 Ω), TA = 25°C, unless otherwise specified. VIN = 3.6 V VLED1, VLED2 = 3.2 V TA = –40°C To +85°C Current Matching = Abs Value ((ILED1–ILED2)÷(ILED1+ILED2))×100 Figure 8. Flash Current Matching vs Code VLED1, VLED2 = 3.2 V 600-mA Setting TA = 25°C Figure 9. Flash Current vs VIN VLED1, VLED2 = 3.2 V 600-mA Setting TA = 85°C Figure 10. Flash Current vs VIN VLED1, VLED2 = 3.2 V 600-mA Setting TA = –40°C Figure 11. Flash Current vs VIN Figure 12. Switching Frequency vs VIN VHWEN = 0 V Figure 13. Shutdown Current vs VIN |
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