전자부품 데이터시트 검색엔진 |
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LM3560 데이터시트(PDF) 8 Page - Texas Instruments |
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LM3560 데이터시트(HTML) 8 Page - Texas Instruments |
8 / 48 page 2.6 2.9 3.2 3.6 3.9 4.2 VIN (V) 3.34 3.31 3.29 3.26 3.23 3.21 3.18 3.16 3.13 25°C -40°C 85°C 2.6 2.9 3.2 3.6 3.9 4.2 VIN (V) 3.90 3.85 3.80 3.75 3.70 3.65 25°C -40°C 85°C 0.20 0.24 0.28 0.32 0.36 0.40 Headroom Voltage (VIN - VLED) 20.0 19.0 18.0 17.0 16.0 15.0 14.0 13.0 12.0 11.0 10.0 Code 101 Code 100 Code 111 Code 110 0.00 0.03 0.05 0.08 0.10 0.13 0.15 0.18 0.20 Headroom Voltage (VIN - VLED) 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 Code 011 Code 010 Code 001 Code 000 LM3560 SNOSB43B – SEPTEMBER 2011 – REVISED AUGUST 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) (VIN = 3.6V, COUT = 10 µF, CIN = 10 µF, L = 1µH (TOKO FDSD0312-1R0, RL = 43 mΩ), TA = 25°C, ILED = ILED1 + ILED2, unless otherwise noted). Indicator Current vs Headroom voltage Indicator Currents vs Headroom voltage VLED = 2.5V VLED = 2.5V Indicate codes 100 - 111 Indicate codes 000 - 011 Figure 9. Figure 10. Closed Loop Current Limit vs VIN ((1)) Closed Loop Current Limit vs VIN ( (1)) 3.6A setting 3A setting Figure 11. Figure 12. (1) The typical curve for Current Limit is measured in closed loop using the typical application circuit by increasing IOUT until the peak inductor current stops increasing. The value given in the Electrical Table is measured open loop and is found by forcing current into SW until the current limit comparator threshold is reached. Closed loop data appears higher due to the delay between the comparator trip point and the NFET turning off. This delay allows the closed loop inductor current to ramp higher after the trip point by approximately 20ns × VIN/L 8 Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LM3560 |
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