SSC2005SC 查看數據表（PDF） - Sanken Electric co.,ltd.

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SSC2005SC

Critical Conduction Mode PFC Control IC

Sanken Electric co.,ltd. 

SSC2005SC

CONTENTS

General Description ------------------------------------------------------------------------ 1

1. Absolute Maximum Ratings--------------------------------------------------------- 3

2. Electrical Characteristics ------------------------------------------------------------ 3

3. Functional Block Diagram----------------------------------------------------------- 5

4. Pin Configuration Definitions------------------------------------------------------- 5

5. Typical Application Circuit --------------------------------------------------------- 6

6. Package Outline ------------------------------------------------------------------------ 7

7. Marking Diagram --------------------------------------------------------------------- 7

8. Operational Description-------------------------------------------------------------- 8

8.1 Critical Conduction Mode: CRM ----------------------------------------- 8

8.2 Startup Operation ------------------------------------------------------------ 9

8.3 Restart Circuit ---------------------------------------------------------------- 9

8.4 Maximum On-time Setting ------------------------------------------------- 9

8.5 Zero Current Detection

and Bottom-on Timing (Delay Time) Setting ------------------------ 10

8.6 Minimum Off-time Limit Function -------------------------------------- 11

8.7 Overvoltage Protection (OVP) -------------------------------------------- 11

8.8 FB pin Under Voltage Protection (FB_UVP) -------------------------- 11

8.9 Overcurrent Protection (OCP) ------------------------------------------- 12

9. Design Notes --------------------------------------------------------------------------- 12

9.1 Inductor Setup --------------------------------------------------------------- 12

9.2 External Components------------------------------------------------------- 13

9.3 PCB Trace Layout and Component Placement ----------------------- 15

10. Reference Design of Power Supply ----------------------------------------------- 17

OPERATING PRECAUTIONS -------------------------------------------------------- 18

IMPORTANT NOTES ------------------------------------------------------------------- 19

SSC2005SC-DS Rev.1.1

SANKEN ELECTRIC CO.,LTD.

2

Feb. 06, 2015

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