ZLED7012

Low-Voltage Four-Channel LED Driver

Data Sheet

November 9, 2010

© 2010

Zentrum Mikroelektronik Dresden AG — Rev. 1.0

All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without

the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.

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Contents

1

IC Characteristics .......................................................................................................................................................... 6

1.1.

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

1.2.

Operating Conditions ............................................................................................................................................. 6

1.3.

Electrical Parameters............................................................................................................................................. 6

1.4.

Typical Performance Graphs ................................................................................................................................. 7

2

Circuit Description ......................................................................................................................................................... 9

2.1.

Block Diagram........................................................................................................................................................ 9

2.2.

ZLED7012 Overview.............................................................................................................................................. 9

2.3.

ZLED7012 Soft-Start Feature .............................................................................................................................. 10

2.4.

ZLED7012 Low-Current Shutdown Mode ............................................................................................................ 10

2.5.

LED Current Control ............................................................................................................................................ 10

2.6.

PCC Serial Digital Interface ................................................................................................................................. 11

3

Operating Conditions................................................................................................................................................... 11

3.1.

RF Noise Reduction............................................................................................................................................. 11

3.2.

ZLED7012 Thermal Protection............................................................................................................................. 11

4

Application Circuit Design............................................................................................................................................ 12

4.1.

Applications.......................................................................................................................................................... 12

4.2.

External Components .......................................................................................................................................... 12

4.2.1.

External Capacitors Cout and Cin................................................................................................................. 12

4.2.2.

External Pump Capacitor .............................................................................................................................. 12

4.2.3.

LEDs ............................................................................................................................................................. 13

4.3.

Unused LED Driver Pins ...................................................................................................................................... 13

5

ESD Protection............................................................................................................................................................ 13

6

Pin Configuration and Package ................................................................................................................................... 13

7

Ordering Information ................................................................................................................................................... 15

8

Glossary ...................................................................................................................................................................... 15

9

Document Revision History ......................................................................................................................................... 15