link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 2 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 13 link to page 14 link to page 14 link to page 14 link to page 15 link to page 16 link to page 17 link to page 17 link to page 17 link to page 17 link to page 20 link to page 21 link to page 22 ADP7156Data SheetTABLE OF CONTENTS Features .. 1 Applications Information .. 14 Applications ... 1 ADIsimPower Design Tool ... 14 General Description ... 1 Capacitor Selection .. 14 Typical Application Circuit ... 1 Undervoltage Lockout (UVLO) ... 15 Revision History ... 2 Programmable Precision Enable .. 16 Specifications ... 3 Start-Up Time ... 17 Input and Output Capacitors, Recommended Specifications 4 REF, BYP, and VREG Pins... 17 Absolute Maximum Ratings .. 5 Current-Limit and Thermal Shutdown ... 17 Thermal Data .. 5 Thermal Considerations .. 17 Thermal Resistance .. 5 Printed Circuit Board (PCB) Layout Considerations .. 20 ESD Caution .. 5 Outline Dimensions ... 21 Pin Configurations and Function Descriptions ... 6 Ordering Guide .. 22 Typical Performance Characteristics ... 7 Theory of Operation .. 13 REVISION HISTORY 11/2016—Rev. A to Rev. B Changes to Table 3 .. 4 5/2016—Rev. 0 to Rev. A Changes to Table 2 .. 3 Changes to Programmable Precision Enable Section .. 16 Changes to Current-Limit and Thermal Shutdown Section .. 17 3/2016—Revision 0: Initial Version Rev. B | Page 2 of 22 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITORS, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION ADIsimPOWER DESIGN TOOL CAPACITOR SELECTION Output Capacitor Input and VREG Capacitor REF Capacitor BYP Capacitor Capacitor Properties UNDERVOLTAGE LOCKOUT (UVLO) PROGRAMMABLE PRECISION ENABLE START-UP TIME REF, BYP, AND VREG PINS CURRENT-LIMIT AND THERMAL SHUTDOWN THERMAL CONSIDERATIONS Thermal Characterization Parameter (ΨJB) PRINTED CIRCUIT BOARD (PCB) LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE