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2 FN9168.2 September 22, 2006 Block Diagram Pinouts ISL6549 (SOIC) TOP VIEW ISL6549 (QFN) TOP VIEW ISL6549 (QSOP) TOP VIEW FB COMP LDO_DR LDO_FB UGATE VCC5 PVCC5 14 13 12 11 1 2 3 4 10 9 8 5 6 7 FS_DIS GND BOOT VCC12 LGATE PGND PHASE COMP FB LDO_DR LDO_FB PGND LGATE PVCC5 VCC5 1 3 4 15 16 14 13 2 9 6 57 8 METAL GND PAD (BOTTOM) 12 10 11 FB COMP LDO_DR LDO_FB UGATE VCC5 PVCC5 16 15 14 13 1 2 3 4 12 11 10 5 6 7 FS_DIS AGND BOOT VCC12 LGATE PGND PHASE 8 DGND 9 VCC12 PHASE SOFT-START COMP EA1 VCC5 PWM UGATE LDO_DR LDO_FB POWER-ON RESET (POR) OSCILLATOR FB COMP EA2 UV2 VOLTAGE REFERENCE RESTART UV1 INHIBIT SOFT-START LGATE BOOT GATE LOGIC PGND VCC12 FS_DIS GND PVCC5 DIS DIS 5V REGULATOR ISL6549 |
