20 V, 6 A, Synchronous, Step-Down DC-to-DC Regulator
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25 /9 — Data Sheet. ADP2387. 4.5. 1.25. RISING. FALLING. 4.4. 1.20. 4.3. (V) D. …
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C
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Data Sheet. ADP2387. 4.5. 1.25. RISING. FALLING. 4.4. 1.20. 4.3. (V) D. 4.2. 1.15. D ( L. ESH. 4.1. 1.10. T O. 4.0. HRE. VL U. 3.9. N T. 1.05. PVI. 3.8. 1.00. 3.7. 3.6. 0.95
Data SheetADP23874.51.25RISINGRISINGFALLINGFALLING4.41.204.3(V) D)L4.2V1.15OD ( LESH4.1RHOHS1.10T O4.0HREVL U3.9N T1.05NEPVI3.81.003.73.6 1 0.95 1 –40–20020406080100120 0 –40–20020406080100120 014 TEMPERATURE (°C) 12643- TEMPERATURE (°C) 12643- Figure 11. PVIN UVLO Threshold vs. Temperature Figure 14. EN Threshold vs. Temperature 3.206063.15604A) µ)(mVNT(3.10E602AG TCURREL3.05O600-UP L UL3.00DBACK V598IN PEPESFS2.955962.90594–40–20020406080100120 012 –40–20020406080100120 015 TEMPERATURE (°C) 12643- TEMPERATURE (°C) 12643- Figure 12. SS Pin Pull-Up Current vs. Temperature Figure 15. Feedback Voltage vs. Temperature 6308.4RT = 100kΩ8.36208.2)610kHzE (V)(G A8.1TNCY600LUEVOQ8.0EGRE F590VR7.95807.85707.7–40–20020406080100120 013 –40–20020406080100120 016 TEMPERATURE (°C) 12643- TEMPERATURE (°C) 12643- Figure 13. Frequency vs. Temperature Figure 16. VREG Voltage vs. Temperature Rev. C | Page 9 of 25 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SOFT START POWER GOOD PEAK CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTION OVERVOLTAGE PROTECTION (OVP) UNDERVOLTAGE LOCKOUT (UVLO) THERMAL SHUTDOWN APPLICATIONS INFORMATION INPUT CAPACITOR SELECTION OUTPUT VOLTAGE SETTING VOLTAGE CONVERSION LIMITATIONS INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING INPUT VOLTAGE UVLO COMPENSATION DESIGN ADIsimPower DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING CURRENT-LIMIT THRESHOLD SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION RECOMMENDED EXTERNAL COMPONENTS CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE