STR-A6000 Series

STR-A6000 - DS Rev.4.3

SANKEN ELECTRIC CO.,LTD.

2

Mar. 13, 2015

CONTENTS

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

1.

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

2.

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

3.

Performance Curves ------------------------------------------------------------------ 6

3.1

Derating Curves --------------------------------------------------------------- 6

3.2

Ambient Temperature versus Power Dissipation Curve ------------- 6

3.3

MOSFET Safe Operating Area Curves ---------------------------------- 7

3.4

Transient Thermal Resistance Curves ----------------------------------- 9

4.

Functional Block Diagram---------------------------------------------------------- 11

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)------------------------------------------- 15

9.3

Bias Assist Function --------------------------------------------------------- 15

9.4

Constant Output Voltage Control---------------------------------------- 15

9.5

Leading Edge Blanking Function ---------------------------------------- 16

9.6

Random Switching Function ---------------------------------------------- 16

9.7

Automatic Standby Mode Function-------------------------------------- 16

9.8

Brown-In and Brown-Out Function ------------------------------------- 17

9.9

Overcurrent Protection Function (OCP) ------------------------------- 19

9.10

Overload Protection Function (OLP) ----------------------------------- 20

9.11

Overvoltage Protection (OVP) -------------------------------------------- 20

9.12

Thermal Shutdown Function (TSD) ------------------------------------- 20

10. Design Notes --------------------------------------------------------------------------- 21

10.1

External Components ------------------------------------------------------- 21

10.2

PCB Trace Layout and Component Placement ----------------------- 22

11. Pattern Layout Example ------------------------------------------------------------ 24

12. Reference Design of Power Supply ----------------------------------------------- 25

OPERATING PRECAUTIONS -------------------------------------------------------- 27

IMPORTANT NOTES ------------------------------------------------------------------- 28