LTC3619B Linear Technology, LTC3619B Datasheet - Page 7

• Manufacturer Part Number: LTC3619B
• Description: 400mA/800mA Synchronous Step-Down DC/DC
• Manufacturer: Linear Technology

FuncTional DiagraM
PGOOD1
PGOOD2
RUN1
RUN2
V
V
FB1
FB2
10
2
8
9
1
4
REGULATOR 2
REGULATOR 1
0.6V REF
0.6V
0.6V
SOFT-START
SOFT-START
OSC
SHUTDOWN
–
+
–
–
+
EA
EA
–
+
–
+
–
+
–
+
0.654V
0.546V
0.654V
0.546V
V
V
FB1
FB2
I
I
TH
TH
OSC
SHUTDOWN
V
V
SLEEP
SLEEP
S
R
S
R
–
+
–
+
CLAMP
CLAMP
SLOPE
SLOPE
COMP
LATCH
COMP
LATCH
MIN
MIN
RS
RS
Q
Q
Q
Q
SLEEP2
SLEEP
SWITCHING
SWITCHING
SLEEP
BLANKING
BLANKING
CIRCUIT
CIRCUIT
LOGIC
LOGIC
AND
AND
SLEEP1
–
–
I
I
COMP
COMP
SHOOT-
SHOOT-
THRU
I
THRU
I
ANTI
RCMP
ANTI
RCMP
TO REGULATOR 2 ONLY
+
+
+
–
+
–
+
–
1V
+
–
+
–
I
I
COMP
COMP
LTC3619B
www.DataSheet4U.com
3619B FD
11
11
6
7
6
5
3
V
SW1
GND
V
SW2
GND
RLIM
IN
IN
3619bfa