7
LTC3402
3402fb
BLOCK DIAGRA
W
1
6
Σ
–
+
CURRENT
COMP
CURRENT
LIMIT
–
+
ERROR
AMP
FB
R1
R2
1.25V
V
C
2.8A TYP
1.25V – 9%
–
+
–
+
Burst Mode
CONTROL
+–
PWM
LOGIC
ANTICROSS
COND
ANTIRING
SLOPE COMP
OSC
R
t
GND
N
POK
SLEEP
–
+
8
V
OUT
V
OUT
2.6V TO 5.5V
7
4
9
MODE/SYNC
3402 BD
2
N
10mV
+
–
SW
1V TO
V
OUT
+ 0.3V
+
V
IN
P
3
+
5
SHDN SHUTDOWN
10
I
SENSE
AMP
I
ZERO
AMP
