AD8240

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TABLE OF CONTENTS

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

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

Product Description......................................................................... 5

Linear Regulator (Block A) ......................................................... 5

High-Side Current-Sense Amplifier with Open LED

Detection (Block B)...................................................................... 5

Comparator with Latch-off OverCurrent Protection

(Block C)........................................................................................ 5

Intelligent Driver (Block D) ........................................................ 5

Using/Evaluating the AD8240 LED Driver Monitor ....................6

Setup................................................................................................6

Controlling the LED lamp............................................................7

Using/Evaluating the VSense Output .............................................7

Advantages of Driving LED Lamps with Constant Voltage ........8

Background ....................................................................................8

Monitoring the LEDs ....................................................................8

Driving Automotive LEDs............................................................8

Outline Dimensions ....................................................................... 10

Ordering Guide .......................................................................... 11

REVISION HISTORY

4/04—Revision 0: Initial Version