Datasheet

MAX8650
4.5V to 28V Input Current-Mode Step-Down
Controller with Adjustable Frequency
10 ______________________________________________________________________________________
IN
6.5V LDO
REGULATOR
5V AVL
LDO
EN
PWM
CONTROL
LOGIC
LEVEL
SHIFT
BST
SYNCO
FSYNC
MODE
CS+
CS-
ILIM1
GND
ILIM2
POK
CURRENT-
LIMIT
CONTROL LOGIC
UVLO
VL
LX
DIVIDE BY 7.5
5μA
10μA
VL
VL
OVP
SCOMP
THERMAL
SHDN
COMP
PWM
COMPARATOR
REF
SELECT
LOGIC
SS
REFIN
SOFT-START
CIRCUITRY
FB
AVL
VL
VOLTAGE
REFERENCE
REF
PGND
DL
DH
MAX8650
COMP
CLAMP
OSCILLATOR
SLOPE
COMP
GM
ERROR
AMP
OVP
1.15V REF
CSA
12
CURRENT-
LIMIT COMP
X1
LEVEL
SHIFT
FB
0.92V
REF
DIVIDE BY 5
Figure 1. Functional Diagram