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ADP5052ACPZ-R7 Datasheet(HTML) 2 Page - Analog Devices

Part No. ADP5052ACPZ-R7
Description  5-Channel Integrated Power Solution with Quad Buck Regulators and 200 mA LDO Regulator
Download  40 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADP5052ACPZ-R7 Datasheet(HTML) 2 Page - Analog Devices

 
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ADP5052
Data Sheet
Rev. 0 | Page 2 of 40
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Typical Application Circuit ............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Detailed Functional Block Diagram .............................................. 3
Specifications..................................................................................... 4
Buck Regulator Specifications .................................................... 5
LDO Regulator Specifications .................................................... 7
Absolute Maximum Ratings............................................................ 8
Thermal Resistance ...................................................................... 8
ESD Caution.................................................................................. 8
Pin Configuration and Function Descriptions............................. 9
Typical Performance Characteristics ........................................... 11
Theory of Operation ...................................................................... 17
Buck Regulator Operational Modes......................................... 17
Adjustable and Fixed Output Voltages .................................... 17
Internal Regulators (VREG and VDD) ................................... 17
Separate Supply Applications.................................................... 18
Low-Side Device Selection........................................................ 18
Bootstrap Circuitry .................................................................... 18
Active Output Discharge Switch .............................................. 18
Precision Enabling...................................................................... 18
Oscillator ..................................................................................... 18
Synchronization Input/Output ................................................. 19
Soft Start ...................................................................................... 19
Parallel Operation....................................................................... 20
Startup with Precharged Output .............................................. 20
Current-Limit Protection .......................................................... 20
Frequency Foldback ................................................................... 21
Hiccup Protection ...................................................................... 21
Latch-Off Protection.................................................................. 21
Undervoltage Lockout (UVLO) ............................................... 22
Power-Good Function ............................................................... 22
Thermal Shutdown .................................................................... 22
LDO Regulator ........................................................................... 22
Applications Information .............................................................. 23
ADIsimPower Design Tool ....................................................... 23
Programming the Adjustable Output Voltage........................ 23
Voltage Conversion Limitations............................................... 23
Current-Limit Setting ................................................................ 23
Soft Start Setting......................................................................... 24
Inductor Selection ...................................................................... 24
Output Capacitor Selection....................................................... 24
Input Capacitor Selection.......................................................... 25
Low-Side Power Device Selection............................................ 25
Programming the UVLO Input................................................ 25
Compensation Components Design ....................................... 26
Power Dissipation....................................................................... 26
Junction Temperature ................................................................ 27
Design Example .............................................................................. 28
Setting the Switching Frequency.............................................. 28
Setting the Output Voltage........................................................ 28
Setting the Current Limit .......................................................... 28
Selecting the Inductor................................................................ 28
Selecting the Output Capacitor ................................................ 29
Selecting the Low-Side MOSFET............................................. 29
Designing the Compensation Network................................... 29
Selecting the Soft Start Time..................................................... 29
Selecting the Input Capacitor ................................................... 29
Recommended External Components .................................... 30
Circuit Board Layout Recommendations ................................... 31
Typical Application Circuits ......................................................... 32
Factory Programmable Options................................................... 35
Factory Default Options............................................................ 37
Outline Dimensions....................................................................... 38
Ordering Guide .......................................................................... 38
REVISION HISTORY
5/13—Revision 0: Initial Version


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