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SC1408IMSTRT Datasheet(PDF) 9 Page - Semtech Corporation |
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SC1408IMSTRT Datasheet(HTML) 9 Page - Semtech Corporation |
9 / 12 page 9 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC1408 Typical Application Circuit (Cont.) Fig.1: Typical Application - Boost Configuration D1 B130T L1 22uH C9 See Text U1 SC1408CS 8 1 2 3 4 5 6 7 ISENSE GATE BST FB EN REF AGND GND + C3 100uF + C8 100uF R3 See Table Vin to 16.5V OUT R2 0.1Ohm Q1 IRLR024N R4 10.0k C5 0.1uF + C2 100uF 1.8V-16.5V IN Coilcraft DO3316P-223 Fig.2: Typical Application - Buck/Boost (SEPIC) Configuration D1 B130T R2 0.1Ohm R3 See Table + C8 100uF D2 1N4148 Q1 IRLL3303 L1A 22uH 1 2 R4 10.0k C9 See Text 0V TO (16.5V-Vin) OUT L1B 22uH 4 3 C5 0.1uF 1.8V TO 5V IN U1 SC1408CS 8 1 2 3 4 5 6 7 ISENSE GATE BST FB EN REF AGND GND C4 0.1uF + C2 100uF + C3 100uF L1A/L1B IS COUPLED INDUCTOR PULSE PE-53718 OR EQUIVALENT + C1 100uF |
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