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XR77103-A0R5 Datasheet(PDF) 6 Page - Exar Corporation |
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XR77103-A0R5 Datasheet(HTML) 6 Page - Exar Corporation |
6 / 19 page XR 77103-A0R5 6/19 REV1A Pin Configuration Pin Functions Pin Number Pin Name Description 1 VFB3 Buck 3 feedback pin. 2 COMP3 Compensation pin for Buck 3. Connect a series RC circuit to this pin for compensation. 3 NC No connect. 4 VIN IC supply pin. Connect a capacitor as close as possible to this pin. 5 GND Ground. 6 VCC Internal supply. Connect a ceramic capacitor from this pin to ground. 7 COMP1 Compensation pin for Buck 1. Connect a series RC circuit to this pin for compensation. 8 VFB1 Buck 1 feedback pin. 9 BST1 Bootstrap capacitor for Buck 1. Connect a bootstrap capacitor from this pin to LX1. 10 VIN1 Input supply for Buck 1. Connect a capacitor as close as possible to this pin. 11 LX1 Switching node for Buck 1. 12 LX1 Switching node for Buck 1. 13 LX2 Switching node for Buck 2. 14 LX2 Switching node for Buck 2. 15 VIN2 Input supply for Buck 2. Connect a capacitor as close as possible to this pin. 16 BST2 Bootstrap capacitor for Buck 2. Connect a bootstrap capacitor from this pin to LX2. 17 VFB2 Buck 2 feedback pin. 18 COMP2 Compensation pin for Buck 2. Connect a series RC circuit to this pin for compensation. 19 DGND Digital ground. 20 NC No connect. COMP3 1 2 3 4 5 6 7 8 32 31 30 29 28 27 26 25 9 10 11 12 13 14 15 16 24 23 22 21 20 19 18 17 VFB3 NC PGOOD GND VFB1 COMP1 NC DGND NC NC NC VFB2 COMP2 VIN VCC |
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