ADP5310

Data Sheet

Rev. A | Page 2 of 28

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Typical Application Circuit ............................................................. 1

General Description......................................................................... 1

Revision History ............................................................................... 2

Detailed Functional Block Diagram .............................................. 3

Specifications..................................................................................... 4

Buck Regulators and Load Switch Specifications..................... 5

Absolute Maximum Ratings............................................................ 7

Thermal Resistance ...................................................................... 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ............................................. 9

Theory of Operation ...................................................................... 18

Buck Regulator Operation Modes............................................ 18

Adjustable and Fixed Output Voltages .................................... 19

Undervoltage Lockout (UVLO) ............................................... 19

Enable and Shutdown Features................................................. 19

Internal Linear Regulator (VREG)........................................... 19

Oscillator and Synchronization ................................................ 19

Current Limit .............................................................................. 19

Short-Circuit Protection............................................................ 19

Soft Start ...................................................................................... 19

Startup with Precharged Output .............................................. 19

100% Duty Operation................................................................ 19

Active Discharge......................................................................... 20

Power-Good Function............................................................... 20

Load Switch................................................................................. 20

Thermal Shutdown .................................................................... 20

Applications Information.............................................................. 21

External Component Selection ................................................ 21

Selecting the Inductor................................................................ 21

Output Capacitor........................................................................ 21

Input Capacitor........................................................................... 21

Adjustable Output Voltage Programming .............................. 22

Efficiency..................................................................................... 22

Recommended Buck External Components .......................... 22

Capacitor Selection .................................................................... 24

Circuit Board Layout Recommendations ............................... 24

Typical Application Circuits.......................................................... 25

Factory Programmable Options................................................... 26

Outline Dimensions....................................................................... 28

Ordering Guide .......................................................................... 28

REVISION HISTORY

11/2016—Rev. 0 to Rev. A

Changes to Ordering Guide .......................................................... 28

4/2015—Revision 0: Initial Version

Moved Circuit Board Layout Recommendations Section

and Figure 57................................................................................... 24