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SC4524AEVB Datasheet(PDF) 7 Page - Semtech Corporation |
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SC4524AEVB Datasheet(HTML) 7 Page - Semtech Corporation |
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7 / 19 page  SC4524A 7 Typical Characteristics Curve 1 Efficiency 40 45 50 55 60 65 70 75 80 85 90 0 0.5 1 1.5 2 Load Current (A) SC4524A/B VO=5V VO=3.3V VO=2.5V VO=1.5V 1MHz, VIN =12V D2=20BQ030 Curve 7 Switch Saturation Voltage vs Switch Current 50 100 150 200 250 300 0.0 0.5 1.0 1.5 2.0 2.5 Switch Current (A) SS270 REV 6-7 -40oC 125oC 25oC Curve 4 Frequency Setting Resistor vs Frequency 1 10 100 1000 0 0.5 1 1.5 2 2.5 Frequency (MHz) SS270 REV 6-7 VIN =12V Curve 3 Feedback Voltage vs Temperature 0.97 0.98 0.99 1.00 1.01 1.02 -50 -25 0 25 50 75 100 125 Temperature ( oC) SS270 REV 6-7 VIN =12V Curve 9 BST Pin Current vs Switch Current 0.0 25.0 50.0 75.0 100.0 0 0.5 1 1.5 2 2.5 3 Switch Current (A) SS270 REV 6-7 -40oC 125oC VIN =12V VBST =15V Curve 6 Foldback Frequency vs VFB 0 0.25 0.5 0.75 1 1.25 0.0 0.2 0.4 0.6 0.8 1.0 VFB (V) TA =25oC ROSC=12.1k ROSC=93.1k Curve 2 Efficiency 40 45 50 55 60 65 70 75 80 85 90 0 0.5 1 1.5 2 Load Current (A) SC4524A 1MHz, VIN =24V D2=20BQ030 VO=5V VO=3.3V VO=2.5V Curve 8 Switch Current Limit vs Temperature 2.5 3.0 3.5 4.0 4.5 -50 -25 0 25 50 75 100 125 Temperature (oC) SS270 REV 6-7 Curve 5 Frequency vs Temperature 0.8 0.9 1.0 1.1 1.2 -50 -25 0 25 50 75 100 125 Temperature (oC) SS270 REV 6-7 ROSC=12.1k ROSC=93.1k |
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