2

ALQ07 DC-DC Converter Technical Reference Notes

DATE: Aug., 9, 2003

Contents

Options ......................................................................................................................................1

Description.................................................................................................................................1

Module Numbering ...........................................................................................................................4

Electrical Specifications ....................................................................................................................5

Input Specifications ...................................................................................................................5

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

Output Specifications.................................................................................................................7

Output Specifications (Cont.).....................................................................................................8

Feature Specifications ...............................................................................................................9

Characteristic Curves .....................................................................................................................10

Performance Curves – Efficiency ............................................................................................10

Performance Curves – Output Performance Curves ...............................................................11

Performance Curves – Transient Response............................................................................12

Performance Curves – Transient Response (Cont.)................................................................13

Performance Curves – Transient Response (Cont.)................................................................14

Performance Curves – Startup Characteristics........................................................................15

Performance Curves – Startup from CNT Control ...................................................................16

Feature Description ........................................................................................................................17

CNT Function ..........................................................................................................................17

Trim .........................................................................................................................................18

Minimum Load Requirements..................................................................................................19

Output Over-current Protection................................................................................................19

Output Over-voltage Protection ...............................................................................................19

Over Temperature Protection ..................................................................................................19

Output Filters ...........................................................................................................................19

Decoupling ..............................................................................................................................20

Ground Loops..........................................................................................................................20

Design Consideration .....................................................................................................................21

Typical Application...................................................................................................................21

Fusing......................................................................................................................................21

Input Reverse Voltage Protection ............................................................................................22

EMC ........................................................................................................................................22

Safety Consideration ...............................................................................................................24

Thermal Consideration ...................................................................................................................25

MTBF..............................................................................................................................................25

Mechanical Considerations.............................................................................................................26

Installation ...............................................................................................................................26