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LTC3531-3 Datasheet(PDF) 7 Page - Linear Technology |
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LTC3531-3 Datasheet(HTML) 7 Page - Linear Technology |
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7 / 16 page  LTC3531/ LTC3531-3.3/LTC3531-3 7 3531fb PI FU CTIO S ThinSOT/DFN Packages SW2 (Pin 1/Pin 7): Buck-Boost Switch Pin Where Internal Switches C and D are Connected. An optional Schottky diode can be connected from SW2 to VOUT for a moderate efficiency improvement. Minimize trace length to keep EMI down. GND (Pin 2/Pin 3): Signal Ground for the IC. PGND (Pin 2/Pin 8): Power Ground for the IC. (Shared on ThinSOT version) VOUT(Pin3/Pin6):OutputoftheBuck-BoostSynchronous Rectifier. A filter capacitor is placed from VOUT to GND. A ceramic bypass capacitor is recommended as close to the VOUT and GND pins as possible. SHDN (Pin 4/Pin 4): External Shutdown Pin. An applied voltage of < 0.4V shuts down the converter. A voltage above >1.4V will enable the converter. VIN (Pin 5/Pin 2): Input Supply Pin for the Buck-Boost Converter. A minimum 2.2μF Ceramic Capacitor should be placed between VIN and GND. FB (NA/Pin 5): Feedback Pin for the Adjustable Version. Connect the resistor divider tap here. The output voltage can be adjusted from 2V to 5V. V R R OUT =+ ⎛ ⎝⎜ ⎞ ⎠⎟ 1225 1 2 1 . SW1 (Pin 6/Pin 1): Buck-Boost Switch Pin Where Internal Switches A and B are Connected. Connect the inductor from SW1 to SW2. Exposed Pad (Pin 9, DFN): Solder to PCB ground for optimal thermal performance. |
Similar Part No. - LTC3531-3_15 |
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Similar Description - LTC3531-3_15 |
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