ADP8140

Data Sheet

Rev. B | Page 2 of 23

TABLE OF CONTENTS

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

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

Typical Application Circuits............................................................ 1

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

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

Specifications..................................................................................... 3

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

Maximum Temperature Ranges ................................................. 6

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

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

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

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

Theory of Operation ...................................................................... 11

Start-Up Sequence...................................................................... 11

Current Sinks .............................................................................. 12

Power Control Operation.......................................................... 12

MODE Pin Operation................................................................ 13

Power Control Modes................................................................ 13

Dimming the LED Current....................................................... 14

Reducing the LED Current with the DIM Pin ....................... 15

Dimming LEDs with the VT Pin ............................................. 15

Fault Protections......................................................................... 15

LED Open-Circuit and Short-Circuit Protection .................. 16

Die Temperature Protection ..................................................... 17

Using Multiple ADP8140 ICs ................................................... 17

Operating the ADP8140 from Higher Input Voltages .......... 18

Effect of LED VF Mismatch....................................................... 18

Managing the Power Dissipation of the ADP8140 ................ 19

Layout Guidelines....................................................................... 19

Ordering Options ....................................................................... 19

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

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

REVISION HISTORY

9/2020—Rev. A to Rev. B

Changes to Figure 36...................................................................... 22

9/2018—Rev. 0 to Rev. A

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

Changes to Ordering Guide .......................................................... 23

2/2015—Revision 0: Initial Version