ADP5303

Data Sheet

Rev. B | Page 2 of 21

TABLE OF CONTENTS

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

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

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

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

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

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

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

Absolute Maximum Ratings............................................................ 6

Thermal Resistance ...................................................................... 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Theory of Operation ...................................................................... 14

Buck Regulator Operational Modes......................................... 14

Oscillator and Synchronization ................................................ 14

Adjustable and Fixed Output Voltages .................................... 14

Undervoltage Lockout (UVLO) ............................................... 15

Enable/Disable ............................................................................ 15

Current Limit .............................................................................. 15

Short-Circuit Protection............................................................ 15

Soft Start ...................................................................................... 15

Startup with Precharged Output .............................................. 15

100% Duty Cycle Operation ..................................................... 15

Active Discharge......................................................................... 15

VINOK Function........................................................................ 15

Thermal Shutdown .................................................................... 15

Applications Information .............................................................. 16

External Component Selection ................................................ 16

Selecting the Inductor................................................................ 16

Output Capacitor........................................................................ 16

Input Capacitor........................................................................... 17

Efficiency..................................................................................... 17

Printed Circuit Board Layout Recommendations ................. 18

Typical Application Circuits ......................................................... 19

Factory Programmable Options................................................... 20

Outline Dimensions....................................................................... 21

Ordering Guide .......................................................................... 21

REVISION HISTORY

3/2019—Rev. A to Rev. B

Changes to Adjustable and Fixed Output Voltages Section...... 14

Changes to Table 8, Table 9, Table 10, and Table 11 .................. 20

Changes to Ordering Guide .......................................................... 21

6/2016—Rev. 0 to Rev. A

Change to Features Section and General Description

Section................................................................................................ 1

Change to SYNC Clock Range Parameter, Table 1 .......................4

Change to Table 4 ..............................................................................7

Change to Oscillator and Synchronization Section ................... 14

Changes to Table 8.......................................................................... 20

10/2015—Revision 0: Initial Version