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LT1610 Datasheet(PDF) 7 Page - Linear Technology |
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LT1610 Datasheet(HTML) 7 Page - Linear Technology |
7 / 16 page 7 LT1610 APPLICATIONS INFORMATION A SEPIC (Single-Ended Primary Inductance Converter) schematic is shown in Figure 4. This converter topology produces a regulated output over an input voltage range 1 2 8 7 3 4 6 5 C2 LT1610 VIN GND SHUTDOWN R1 R2 MULTIPLE VIAs GROUND PLANE 1610 F05 + C3 D1 VOUT L1 L2 C1 + Figure 5. Recommended Component Placement for SEPIC SHUTDOWN C2 22 µF 6.3V C1 22 µF 6.3V L1 22 µH L2 22 µH C3 1 µF CERAMIC D1 INPUT Li-ION 3V to 4.2V VOUT 3.3V 120mA 1610 F04 + + 1M 604k C1, C2: AVX TAJA226M006 C3: AVX 1206YC105 (X7R) D1: MOTOROLA MBR0520 L1, L2: MURATA LQH3C220 (UNCOUPLED) OR SUMIDA CLS62-220 (COUPLED) 65 • • 2 3 4 7 8 1 VIN SW PGND FB SHDN GND COMP LT1610 VC Figure 4. Li-Ion to 3.3V SEPIC DC/DC Converter that spans (i.e., can be higher or lower than) the output. Recommended component placement for a SEPIC is shown in Figure 5. |
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