BL0200 Series

BL0200-DS Rev.2.3

SANKEN ELECTRIC CO.,LTD.

2

May. 15, 2014

CONTENTS

Lineup ----------------------------------------------------------------------------------------- 1

Applications---------------------------------------------------------------------------------- 1

1.

Absolute Maximum Ratings--------------------------------------------------------- 3

2.

Electrical characteristics ------------------------------------------------------------- 4

3.

Functional Block Diagram----------------------------------------------------------- 6

4.

Pin List Table--------------------------------------------------------------------------- 7

5.

Typical Application Circuit --------------------------------------------------------- 8

6.

Package Diagram ---------------------------------------------------------------------- 9

7.

Marking Diagram --------------------------------------------------------------------- 9

8.

Functional Description -------------------------------------------------------------- 10

8.1

Startup Operation（BL0200C） -------------------------------------------- 10

8.2

Startup Operation（BL0202B, BL0202C） ------------------------------ 11

8.3

Constant Current Control Operation ----------------------------------- 12

8.4

PWM Dimming Function -------------------------------------------------- 13

8.5

Gate Drive --------------------------------------------------------------------- 13

8.6

Error Signal Output Function (BL0200C) ----------------------------- 14

8.7

Protection Function --------------------------------------------------------- 14

9.

Design Notes --------------------------------------------------------------------------- 18

9.1

Peripheral Components ---------------------------------------------------- 18

9.2

Inductor Design Parameters----------------------------------------------- 18

9.3

PCD Trace Layout and Component Placement ----------------------- 19

10. Reference Design of Power Supply ----------------------------------------------- 21

10.1

BL0202B ----------------------------------------------------------------------- 21

10.2

BL0200C ----------------------------------------------------------------------- 23

OPERATING PRECAUTIONS -------------------------------------------------------- 25

IMPORTANT NOTES ------------------------------------------------------------------- 26