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SC189CEVB Datasheet(PDF) 5 Page - Semtech Corporation |
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SC189CEVB Datasheet(HTML) 5 Page - Semtech Corporation |
5 / 23 page www.semtech.com © 2009 Semtech Corp. 5 SC189 Typical Characteristics Efficiency vs. Load Current (V OUT=1.5V) Total Loss vs. Load Current (V OUT=1.5V) Losses 0 200 400 600 800 0.0 0.3 0.6 0.9 1.2 1.5 Output Current (A) VOUT= 1.50V TA=25°C VIN= 5.0V VIN= 3.3V Losses 0 200 400 600 800 0.0 0.3 0.6 0.9 1.2 1.5 Output Current (A) VOUT= 3.30V TA=25°C VIN= 5.0V VIN= 4.0V Efficiency vs. Load Current (V OUT=3.3V) Total Loss vs. Load Current (V OUT=3.3V) Efficiency vs. Load Current (V IN=5.0V, VOUT=1.0V) Efficiency vs. Load Current (V IN=5.0V, VOUT=3.3V) Efficiency 60% 65% 70% 75% 80% 85% 90% 95% 100% 0.0 0.3 0.6 0.9 1.2 1.5 Output Current (A) L=1071AS-1R0N (33m _typ) VIN= 5.0V VOUT= 1.0V TA=25°C L=1071AS-2R2N (50m _typ) L=LQM2HPN1R0MG0 (55m _typ) L=MDT2520-CR1R0M (60m _typ) Efficiency 60% 65% 70% 75% 80% 85% 90% 95% 100% 0.0 0.3 0.6 0.9 1.2 1.5 Output Current (A) VIN= 5.0V VOUT= 3.3V TA=25°C L=1071AS-1R0N (33m _typ) L=1071AS-2R2N (50m _typ) L=LQM2HP1R0MG0 (55m _typ) L=MDT2520-CR1R0M (60m _typ) Efficiency 60% 65% 70% 75% 80% 85% 90% 95% 100% 0.0 0.3 0.6 0.9 1.2 1.5 Output Current (A) VOUT= 1.50V TA=25°C VIN= 5.0V VIN= 3.3V Efficiency 60% 65% 70% 75% 80% 85% 90% 95% 100% 0.0 0.3 0.6 0.9 1.2 1.5 Output Current (A) VOUT= 3.30V TA=25°C VIN= 5.0V VIN= 4.0V Circuit Conditions: C IN= 10uF/6.3V; COUT= 10uF/6.3V for L=2.2uH; COUT= 22uF/6.3V for L=1uH. Unless otherwise noted, L= 2.2uH (TOKO: 1071AS-2R2M) and SC189 in MLPD-UT6 package. |
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