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LM3644TTYFFR Fiches technique(PDF) 11 Page - Texas Instruments |
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LM3644TTYFFR Fiches technique(HTML) 11 Page - Texas Instruments |
11 / 41 page VIN (V) 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 1.875 1.9 1.925 1.95 1.975 2 2.025 2.05 2.075 2.1 2.125 D017 TA = +25GC TA = +85GC TA = -40GC VIN (V) 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 3.75 3.8 3.85 3.9 3.95 4 4.05 4.1 4.15 4.2 4.25 D017 D018 TA = +25GC TA = +85GC TA = -40GC VIN (V) 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 D013 TA = -40GC TA = +25GC TA = +85GC VIN (V) 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 D014 TA = -40GC TA = +25GC TA = +85GC LM3644, LM3644TT www.ti.com SNVSA52D – AUGUST 2014 – REVISED SEPTEMBER 2015 Typical Characteristics (continued) Ambient temperature is 25°C, input voltage is 3.6 V, HWEN = VIN, CIN = COUT = 2 × 10 µF and L = 1 µH, unless otherwise noted . ILED = 1.5 A ƒSW = 2 MHz VLED = 4.5 V ILED = 1.5 A ƒSW = 4 MHz VLED = 4.5 V ICL = 2.8 A ICL = 2.8 A Figure 28. Inductor Current Limit vs Input Voltage Figure 29. Inductor Current Limit vs Input Voltage Figure 30. 2-MHz Switching Frequency vs Input Voltage Figure 31. 4-MHz Switching Frequency vs Input Voltage Copyright © 2014–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM3644 LM3644TT |
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