Rainbow Electronics MAX767 - Manual (Page 9)

MAX767
5V-to-3.3V, Synchronous, Step-Down
Power-Supply Controller
_______________________________________________________________________________________ 9
SHOOT-
THROUGH
CONTROL
R
Q
60kHz
LPF
MINIMUM
CURRENT
(IDLE-MODE)
25mV
R
Q
LEVEL
SHIFT
1X
MAIN PWM
COMPARATOR
LEVEL
SHIFT
CURRENT
LIMIT
V CC
30R
1R
3.3V
4 µA
SYNCHRONOUS
RECTIFIER CONTROL
0mV TO 100mV
SS
ON
CS
FB
BST
DH
LX
V CC
DL
PGND
S
S
SLOPE COMP
N
200kHz/300kHz
OSCILLATOR
ON
+3.3V
REFERENCE
2.8V
4V
REF V CC
FAULT
SYNC
MAX767
Figure 3. MAX767 Block Diagram