Datasheet

9
LTC1929/LTC1929-PG
FU CTIO AL DIAGRA
UU
W
SWITCH
LOGIC
0.8V
4.7V
5V
V
IN
V
IN
A1
CLK2
CLK1
+
–
+
–
–
+
V
REF
INTERNAL
SUPPLY
EXTV
CC
INTV
CC
SGND
+
5V
LDO
REG
SW
SHDN
TOP
BOOST
TG
C
B
C
IN
D
B
PGND
BOT
BG
INTV
CC
INTV
CC
V
IN
+
V
OUT
1929 FBD
R1
EAIN
DROP
OUT
DET
RUN
SOFT-
START
BOT
FORCE BOT
S
R
Q
Q
OSCILLATOR
PLLFLTR
50k
EA
0.86V
0.80V
OV
V
FB
1.2µA
6V
V
IN
R2
–
+
R
C
4(V
FB
)
SHDN
RUN/SS
I
TH
C
C
C
SS
4(V
FB
)
SLOPE
COMP
+
–
SENSE
–
SENSE
+
INTV
CC
30k
45k
2.4V
45k
30k
I
1
AMPMD
DIFFOUT
0V POSITION
LTC1929 ONLY
PHASE DET
PLLIN
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
+–
R
SENSE
L
C
OUT
+
V
OS
+
V
OS
–
F
IN
R
LP
C
LP
0.74V
0.86V
LTC1929-PG OPTIONAL PGOOD HOOKUP
A1
+
–
DIFFOUT
V
OS
+
V
OS
–
+
–
+
–
EAIN
PGOOD