ADP5024 Analog Devices, ADP5024 Datasheet - Page 16

• Manufacturer Part Number: ADP5024
• Description: Dual 3 MHz, 1200 mA Buck Regulators with One 300 mA LDO
• Manufacturer: Analog Devices

ADP5024
THEORY OF OPERATION
PGND1
AVIN
VIN1
SW1
EN1
EN2
EN3
CONTROL
ENABLE
MODE
AND
ADP5024
ANTISHOOT
THROUGH
ENBK1
ENBK2
ENLDO
DRIVER
PWM
COMP
I
LOW
CURRENT
LIMIT
AND
CONTROL
AVIN
BUCK1
PWM/
GM ERROR
PSM
VIN3
AMP
SOFT START
UNDERVOLTAGE
ENBK1
COMP
LOCKOUT
PSM
LDO
CONTROL
Figure 45. Functional Block Diagram
LDO
75Ω
VOUT1
Rev. A | Page 16 of 28
UNDERVOLTAGE
OSCILLATOR
SHUTDOWN
LOCKOUT
THERMAL
SYSTEM
FB1 FB2
VOUT2
AGND
75Ω
R1
R2
FB3
SOFT START
PSM
COMP
ENBK2
VOUT3
GM ERROR
AMP
600Ω
CONTROL
BUCK2
PWM/
PSM
SEL
MODE
Y
OP
B
A
CURRENT
MODE2
ENLDO
ANTISHOOT
THROUGH
COMP
DRIVER
I
PWM
LOW
LIMIT
AND
Data Sheet
VIN2
SW2
PGND2
MODE