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 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 link to page 23 ADP7157Data SheetTABLE OF CONTENTS Features .. 1 ADIsimPower Design Tool ... 14 Applications ... 1 Capacitor Selection .. 14 General Description ... 1 Undervoltage Lockout (UVLO) ... 15 Typical Application Circuit ... 1 Programmable Precision Enable .. 16 Revision History ... 2 Start-Up Time ... 17 Specifications ... 3 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 PSRR Performance ... 20 ESD Caution .. 5 PCB Layout Considerations .. 21 Pin Configurations and Function Descriptions ... 6 Outline Dimensions ... 22 Typical Performance Characteristics ... 7 Ordering Guide .. 23 Theory of Operation .. 13 Applications Information .. 14 REVISION HISTORY 11/2016—Rev. A to Rev. B Changes to Table 3 .. 4 5/2016—Rev. 0 to Rev. A Added Note 2 to Table 2; Renumbered Sequential y ... 4 Change to Figure 4 ... 6 Change to Programmable Precision Enable Section ... 16 3/2016—Revision 0: Initial Version Rev. B | Page 2 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT REVISION HISTORY 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) PSRR PERFORMANCE PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
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