
Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Dual LDO Controllers
Typical Operating Circuits
V IN
C I2
R I2
R 1FB2
C 1
R 1
C F2
R F2
R 2FB2
C 2
C IN2
C DD2
C CF2
V OUT2
C E1
AVIN
EN2 PVIN2
DVDD2
FB2 COMP2
LX2
L 2
V OUT2
R P1
C P1
Q 1
B3
R S2
C OUT2
V OUT3
C OUT3
R 1FB3
R 1EN3
V OUT1
EN3
PGND2
DVDD1
V IN
C DD1
C S2
FB3
R 2FB3
R 2EN3
EN1
V IN
C IN1
V AVIN
PVIN1
C E2
Q 2
C P2
R P2
B4
MAX15022
LX1
R S1
L 1
C OUT1
V OUT1
C S1
V OUT4
C OUT4
R 1FB4
R 1EN4
EN4
FB4
PGND1
C I1
R 2FB4
R 2EN4
R I1
R 1FB1
R 1EN2
FB1
PGND
SGND
R T
RT
C T
SGND
SEL
V AVIN
COMP1
C F1
R F1
C CF1
R 2FB1
R 2EN2
Figure 7. MAX15022 Double Buck with Tracking and Two Additional LDOs
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