Highly Integrated, 25A, Wide-Input,
Internal MOSFET, Step-Down Regulator
IN
EN
VL
AVL
REFIN
SS
REF
SELECT
LOGIC
FB
COMP
OVP
CS+
CS-
ILIM1
10μA
VL
GND
6.5V LDO
REGULATOR
5V AVL
LDO
VOLTAGE
REFERENCE
MAX8655
UVLO
THERMAL
SHDN
VREF
LEVEL
SHIFT
SHOOT-THROUGH
PROTECTION
VL
PWM
CONTROL
LOGIC
ERROR
AMPLIFIER
GM
SOFT-START
CIRCUITRY
COMP
CLAMP
OVP
1.15V REF
CURRENT-SENSE
AMPLIFIER
PWM
COMPARATOR
VSUM
12
LEVEL
SHIFT
X1
CURRENT-LIMIT
COMPARATOR
CURRENT-LIMIT
CONTROL LOGIC
OSCILLATOR
SLOPE
COMP
÷7.5
0.9V REF
FB
Figure 1. Functional Diagram
BST
PVIN
LX
PGND
VLGND
SYNCO
FSYNC
SCOMP
MODE
ILIM2
POK
10 ______________________________________________________________________________________