ADP3051 Просмотр технического описания (PDF) - Analog Devices

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ADP3051

500 mA PWM Step-Down DC-DC with Synchronous Rectifier

Analog Devices 

ADP3051

TABLE OF CONTENTS

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 4

ESD Caution.................................................................................. 4

Pin Configuration and Function Descriptions............................. 5

Typical Performance Characteristics ............................................. 6

Theory of Operation ........................................................................ 9

PWM Control Mode .................................................................... 9

Tri-Mode Operation..................................................................... 9

100% Duty Cycle Operation ..................................................... 10

Shutdown..................................................................................... 10

REVISION HISTORY

6/04—Revision 0: Initial Version

Undervoltage Lockout (UVLO) ............................................... 10

Short-Circuit Protection and Recovery................................... 10

Applications..................................................................................... 11

Recommended Components .................................................... 11

Design Procedure ....................................................................... 11

Output Capacitor Selection....................................................... 12

Circuit Board Layout Considerations...................................... 13

Outline Dimensions ....................................................................... 15

Ordering Guide .......................................................................... 15

Rev. 0 | Page 2 of 16

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