MPZ2012S221A datasheet(52/56 Pages) STMICROELECTRONICS

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9.2

Switching frequency ........................................................... 33

9.3

Programmable power-up threshold............................................... 33

9.4

Output External synchronization ................................................. 34

Design of the external components ...............................................36

10.1

Input capacitor selection........................................................ 36

10.2

Transformer selection .......................................................... 38

10.3

Schottky diode ................................................................ 42

10.4

Output capacitors selection ..................................................... 43

Application board.................................................................44

Package information..............................................................47

12.1

QFN16 (3x3 mm) package information............................................ 47

Ordering information .............................................................49

Revision history .......................................................................50

L6983I

Contents

DS14040 - Rev 1

page 52/56

MPZ2012S221A 数据表(PDF) 52 Page - STMicroelectronics