LTC3826 Linear Technology, LTC3826 Datasheet - Page 10

• Manufacturer Part Number: LTC3826
• Description: 2-Phase Synchronous Step-Down Controller
• Manufacturer: Linear Technology

www.datasheet4u.com
LTC3826
BLOCK DIAGRAM
10
V
F
IN
+
IN
R
C
LP
PLLIN/MODE
LP
PHASMD
CLKOUT
PGOOD1
PGOOD2
PLLLPF
EXTV
INTV
SGND
V
27
28
22
20
19
5
3
2
4
IN
CC
CC
6, 33
PLLIN/MODE
100k
INTV
OSCILLATOR
4.7V
PHASE DET
CC
-0.5V
0.8V
+
–
–
+
–
+
CLK1
CLK2
INTERNAL
–
+
–
+
–
+
–
+
SUPPLY
5.25V/
7.5V
LDO
0.88V
0.72V
0.88V
0.72V
FC
BURSTEN
V
V
FB1
FB2
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
RUN
7, 8
0.5μA
6V
2(V
0.45V
FB
SLOPE
COMP
ICMP
)
S
R
+
–
Q
Q
0.4V
–
DROP
OUT
DET
2(V
SHDN
+
–
+
RST
FB
+
)
B
6mV
BOT
TOP ON
BURSTEN
–
FOLDBACK
SLEEP
SHDN
14
FC
+
–
OV
IR
FOLDDIS
EA
SWITCH
–
+
+
–
SHDN
LOGIC
V
FB
TRACK/SS
0.80V
0.88V
TOP
BOT
1μA
INTV
CC
TRACK/SS
SENSE
SENSE
BOOST
25, 16
24, 17
26, 15
23, 18
32, 10
31, 11
29, 13
PGND
30,12
SW
1, 9
V
BG
I
TG
21
TH
FB
+
–
INTV
CC
R
D
C
C
C
A
B
R
C2
SS
B
C
L
B
C
V
IN
R
C
R
D
SENSE
C
IN
3826fc