STR-A6100 Series

STR-A6100 - DS Rev.2.0

SANKEN ELECTRIC CO.,LTD.

2

Dec. 25, 2013

CONTENTS

General Descriptions -------------------------------------------------------------------------------1

1.

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

2.

Electrical Characteristics --------------------------------------------------------------------4

3.

Performance Curves --------------------------------------------------------------------------5

3.1

Derating Curves ----------------------------------------------------------------------5

3.2

MOSFET Safe Operating Area Curves------------------------------------------6

3.3

Ambient Temperature versus Power Dissipation, PD1 Curves --------------7

3.4

Internal Frame Temperature versus Power Dissipation, PD2 Curves ------7

3.5

Transient Thermal Resistance Curves -------------------------------------------8

4.

Functional Block Diagram----------------------------------------------------------------- 10

5.

Pin Configuration Definitions------------------------------------------------------------- 11

6.

Typical Application Circuit --------------------------------------------------------------- 12

7.

Package Outline ----------------------------------------------------------------------------- 13

8.

Marking Diagram --------------------------------------------------------------------------- 13

9.

Operational Description-------------------------------------------------------------------- 14

9.1

Startup Operation ----------------------------------------------------------------- 14

9.2

Undervoltage Lockout (UVLO) ------------------------------------------------- 14

9.3

Constant Output Voltage Control ---------------------------------------------- 14

9.4

Leading Edge Blanking Function ----------------------------------------------- 15

9.5

Auto Standby Function ----------------------------------------------------------- 15

9.6

Auto Bias Function (STR-A61××) ---------------------------------------------- 16

9.7

Overcurrent Protection Function (OCP) -------------------------------------- 16

9.8

Overload Protection (OLP) ------------------------------------------------------ 16

9.9

Overvoltage Protection (OVP) -------------------------------------------------- 17

9.10

Thermal Shutdown Function (TSD)-------------------------------------------- 17

10. Design Notes ---------------------------------------------------------------------------------- 18

10.1

External Components ------------------------------------------------------------- 18

10.2

PCB Trace Layout and Component Placement ------------------------------ 19

11. Pattern Layout Example ------------------------------------------------------------------- 21

12. Reference Design of Power Supply------------------------------------------------------- 22

OPERATING PRECAUTIONS --------------------------------------------------------------- 24

IMPORTANT NOTES -------------------------------------------------------------------------- 25