link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 3 link to page 4 link to page 5 link to page 5 link to page 5 link to page 5 link to page 6 link to page 7 link to page 15 link to page 16 link to page 16 link to page 16 link to page 18 link to page 19 link to page 19 link to page 19 link to page 23 link to page 24 link to page 19 link to page 22 ADM7151Data SheetTABLE OF CONTENTS Features .. 1 Theory of Operation .. 15 Applications ... 1 Applications Information .. 16 Typical Application Circuit ... 1 Model Selection .. 16 General Description ... 1 Capacitor Selection .. 16 Revision History ... 2 Enable (EN) and Undervoltage Lockout (UVLO) ... 18 Specifications ... 3 Start-Up Time ... 19 Input and Output Capacitor, Recommended Specifications .. 4 REF, BYP, and VREG Pins ... 19 Absolute Maximum Ratings .. 5 Current-Limit and Thermal Overload Protection ... 19 Thermal Data .. 5 Thermal Considerations .. 19 Thermal Resistance .. 5 Printed Circuit Board Layout Considerations ... 22 ESD Caution .. 5 Outline Dimensions ... 23 Pin Configurations and Function Descriptions ... 6 Ordering Guide .. 24 Typical Performance Characteristics ... 7 REVISION HISTORY 8/2019—Rev. A to Rev. B4/2015—Rev. 0 to Rev. A Changes to Figure 18 .. 9 Change to Figure 4 .. 6 Updated Outline Dimensions ... 23 Change to Figure 39 ... 12 Changes to Ordering Guide .. 24 9/2013—Revision 0: Initial Version Rev. B | Page 2 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION MODEL SELECTION CAPACITOR SELECTION Output Capacitor Input and VREG Capacitor REF Capacitor BYP Capacitor Capacitor Properties ENABLE (EN) AND UNDERVOLTAGE LOCKOUT (UVLO) START-UP TIME REF, BYP, AND VREG PINS CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS Thermal Characterization Parameter (ΨJB) PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE