Rainbow Electronics MAX799 - Manual (Page 12)

MAX796/MAX797/MAX799
Step-Down Controllers with
Synchronous Rectifier for CPU Power
12 ______________________________________________________________________________________
MAX796
1V
CSL
CSH
REF
GND
4V
FB
ADJ FB
5V FB
3.3V FB
SYNC
LPF
60kHz
PWM
COMPARATOR
OUT
V+
BATTERY VOLTAGE
4.5V
VL
TO
CSL
+5V AT 5mA
BST
DH
LX
DL
PGND
SECFB
MAIN
OUTPUT
AUXILIARY
OUTPUT
SHDN
PWM
LOGIC
SHDN
SS
ON/OFF
+2.505V
AT 100 µ A
+5V LINEAR
REGULATOR
+2.505V
REF
Figure 2. MAX796 Block Diagram