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ADP2389 Datasheet(PDF) 3 Page - Analog Devices |
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ADP2389 Datasheet(HTML) 3 Page - Analog Devices |
3 / 23 page Data Sheet ADP2389/ADP2390 Rev. 0 | Page 3 of 23 DETAILED FUNCTIONAL BLOCK DIAGRAM Figure 3. ADP2389/ADP2390 Detailed Functional Block Diagram CONTROL LOGIC AND MOSFET DRIVER WITH ANTICROSS PROTECTION IMAX HICCUP MODE + – + 0.6V ISS SS FB COMP gm FTW OCP CMP + – – + + – INEG + – NEGATIVE CURRENT COMPARATOR BST PVIN VREG 5V REGULATOR SW NFET NFET VREG PGND DRIVER DRIVER DEGLITCH PGOOD GND EN_BUF EN 1.2V 1.3µA ILIM CLK SLOPE RAMP RT OSC OCP THRESHOLD SETTING FAST TRANSIENT WINDOW 4.8µA SKIP CMP ADP2390 ONLY PFM THRESHOLD Σ SLOPE RAMP – + OVP 0.7V – + 0.66V – + 0.54V CLK ACS + – SHUTDOWN LOGIC THERMAL SHUTDOWN UVLO BOOST REGULATOR VIN ADP2389/ADP2390 |
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