ADP2108

Data Sheet

Rev. G | Page 2 of 20

TABLE OF CONTENTS

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

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

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

Typical Applications Circuit............................................................ 1

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

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

Absolute Maximum Ratings............................................................ 4

Thermal Resistance ...................................................................... 4

ESD Caution.................................................................................. 4

Pin Configuration and Function Descriptions............................. 5

Typical Performance Characteristics ............................................. 6

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

Control Scheme .......................................................................... 11

PWM Mode................................................................................. 11

Power Save Mode........................................................................ 11

Enable/Shutdown ....................................................................... 11

Short-Circuit Protection............................................................ 12

Undervoltage Lockout ............................................................... 12

Thermal Protection.................................................................... 12

Soft Start ...................................................................................... 12

Current Limit.............................................................................. 12

100% Duty Operation................................................................ 12

Applications Information .............................................................. 13

ADIsimPower Design Tool ....................................................... 13

External Component Selection ................................................ 13

Thermal Considerations............................................................ 14

PCB Layout Guidelines.............................................................. 14

Evaluation Board ............................................................................ 15

Outline Dimensions....................................................................... 16

Ordering Guide .......................................................................... 17

REVISION HISTORY

6/12—Rev. F to Rev. G

Change to Features Section ............................................................. 1

Added ADIsimPower Design Tool Section................................. 13

Updated Outline Dimensions....................................................... 16

1/12—Rev. E to Rev. F

Change to Table 3...................................................................................4

Changes to Output Capacitor Section ......................................... 13

10/10—Rev. D to Rev. E

Changed −40°C to +85°C to −40°C to +125°C Throughout .........3

Changes to Ordering Guide .......................................................... 17

1/10—Rev. C to Rev. D

Changes to Ordering Guide .......................................................... 17

4/09—Rev. B to Rev. C

Changes to General Description Section ...................................... 1

2/09—Rev. A to Rev. B

Added 5-Lead TSOT Package...........................................Universal

Changes to Absolute Maximum Ratings Section......................... 4

Updated Outline Dimensions....................................................... 16

Changes to Ordering Guide .......................................................... 17

11/08—Rev. 0 to Rev. A

Changes to Figure 4.......................................................................... 6

Updated Outline Dimensions....................................................... 16

9/08—Revision 0: Initial Version