ADP5138

Data Sheet

Rev. A | Page 2 of 23

TABLE OF CONTENTS

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

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

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

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

Table of Contents.............................................................................. 2

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

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

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

Buck Regulator Specifications .................................................... 5

LDO Regulator Specifications .................................................... 6

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

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

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

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

Typical Performance Characteristics ........................................... 10

Theory of Operation ...................................................................... 17

Control Scheme .......................................................................... 17

Precision Enable and Shutdown............................................... 17

Oscillator and Phase Shift ......................................................... 17

Synchronization.......................................................................... 17

Input Overvoltage Lockout (OVLO)....................................... 17

Input Undervoltage Monitor (UVM) ...................................... 17

Input Undervoltage Lockout (UVLO)..................................... 17

Output Voltage Power-Good.................................................... 17

Power-On Reset (POR) ............................................................. 18

Soft Start and Power-Up Sequence .......................................... 18

Current-Limit and Short-Circuit Protection.......................... 18

Active Output Discharge........................................................... 19

Thermal Shutdown .................................................................... 19

Applications Information .............................................................. 20

Input Capacitor Selection.......................................................... 20

Output Voltage Setting .............................................................. 20

Inductor Selection ...................................................................... 20

Output Capacitor Selection....................................................... 20

Application Circuit..................................................................... 21

Factory-Programmable Options .................................................. 22

Outline Dimensions....................................................................... 23

Ordering Guide .......................................................................... 23

Automotive Products................................................................. 23

REVISION HISTORY

8/2018—Rev. 0 to Rev. A

Change to Figure 2 ........................................................................... 3

5/2018—Revision 0: Initial Version