ADP5034

Manufacturer Part NumberADP5034
DescriptionDual 3 MHz, 1200mA Buck Regulator with Two 300 mA LDOs
ManufacturerAnalog Devices
ADP5034 datasheet
 


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ADP5034
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Application Circuit ............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
General Specifications ................................................................. 3
BUCK1 and BUCK2 Specifications ........................................... 4
LDO1 and LDO2 Specifications ................................................. 4
Input and Output Capacitor, Recommended Specifications .. 5
Absolute Maximum Ratings ............................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution .................................................................................. 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 8
REVISION HISTORY
10/11—Rev. 0 to Rev. A
Change to Features Section ............................................................. 1
Changes to General Description Section ...................................... 1
Changes to Figure 1 .......................................................................... 1
Change to Table 1, Low UVLO Input Voltage Falling Parameter,
Symbol Column ................................................................................ 3
Change to Table 2, Output Voltage Accuracy Parameter, Test
Conditions/Comment Column ...................................................... 4
Change to Table 2, Line Regulation Parameter, Symbols
Column .............................................................................................. 4
Change to Table 2, Load Regulation Parameter, Symbols
Column .............................................................................................. 4
Changes to Table 2, Reversed the R
and R
PFET
the SW On Resistance Parameter and Changes to Typ and Max
Columns ............................................................................................. 4
Changes to Table 3, Output Accuracy Parameter, Test
Conditions/Comments Column ..................................................... 4
Changes to Table 3, Line Regulation Parameter, Symbols
Column and Test Conditions/Comments Column ..................... 4
Change to Table 3, Changes to Dropout Voltage Parameter and
Added Specification to Dropout Voltage Parameter.................... 5
Change to Table 3, Endnote 3 ......................................................... 5
Change to Table 4, BUCK1, BUCK2 Output Capacitor
Parameter, Min Column Value ....................................................... 5
 
Theory of Operation ...................................................................... 15
 
Power Management Unit ........................................................... 15
 
BUCK1 and BUCK2 .................................................................. 17
 
LDO1 and LDO2 ........................................................................ 18
 
Applications Information .............................................................. 19
 
Buck External Component Selection ....................................... 19
 
LDO External Component Selection ...................................... 21
 
Power Dissipation and Thermal Considerations ....................... 22
 
Buck Regulator Power Dissipation .......................................... 22
 
Junction Temperature ................................................................ 23
 
PCB Layout Guidelines .................................................................. 24
 
Typical Application Schematics .................................................... 25
 
Bill of Materials ........................................................................... 25
 
Outline Dimensions ....................................................................... 26
 
Ordering Guide .......................................................................... 26
Change to Table 4, Endnote 1 .......................................................... 5
Changes to Absolute Maximum Ratings, Table 5 ......................... 6
Changes to Table 7, Pin Function Descriptions ............................ 7
Changes to TPC Section ................................................................... 8
Moved Power Dissipation and Thermal Considerations
Section .............................................................................................. 22
Change to Equation 5 Where Statement ..................................... 22
Change to Equation 6..................................................................... 22
Change to Undervoltage Lockout Section .................................. 16
Changes to Figure 46 ...................................................................... 16
Change to Figure 47 ....................................................................... 17
Changes to LDO1/LDO2 Section ................................................ 18
Symbols for
NFET
Changes to Output Capacitor Section and Table 8 .................... 19
Change to V
Changes to Input and Output Capacitor Properties Section .... 21
Changes to Equation 3 ................................................................... 22
Changes to Junction Temperature Section .................................. 23
Changes to LDO Regulator Power Dissipation Section ............ 23
Changes to Figure 52 and Figure 53............................................. 25
Moved Bill of Materials Section .................................................... 25
Changes to Ordering Guide .......................................................... 26
6/11—Revision 0: Initial Version
Rev. A | Page 2 of 28
Data Sheet
Equation, Table 9, and Figure 50 ................... 20
RIPPLE