LTC1629 LINER [Linear Technology], LTC1629 Datasheet - Page 9

• Manufacturer Part Number: LTC1629
• Description: PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

FU CTIO AL DIAGRA
LTC1629
ONLY
LTC1629-PG PGOOD CONNECTION
THE AMPMD PIN ON
THE LTC1629 IS
REPLACED BY A PGOOD
PIN IN THE LTC1629-PG
R
C
F
LP
LP
IN
U
V
IN
+
5V
PHASMD
DIFFOUT
DIFFOUT
CLKOUT
AMPMD
PLLLPF
EXTV
INTV
PLLIN
SGND
V
V
V
V
V
OS
OS
OS
OS
IN
CC
–
+
–
+
CC
50k
U
2 A
PHASE LOGIC
OSCILLATOR
4.7V
0V POSITION
PHASE DET
+
–
0.80V
+
–
A1
CLK1
CLK2
INTERNAL
SUPPLY
–
+
V
LDO
REG
5V
REF
A1
PGOOD
W
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
1.2 A
6V
4(V
0.86V
FB
SLOPE
COMP
)
I1
S
R
–
+
–
+
–
+
Q
Q
–
DROP
OUT
DET
0.86V
EAIN
0.74V
45k
+
4(V
SHDN
RST
FB
)
BOT
FORCE BOT
SHDN
FCB
START
45k
SOFT
RUN
OV
LTC1629/LTC1629-PG
2.4V
EA
SWITCH
–
+
+
–
LOGIC
0.80V
0.86V
TOP
BOT
INTV
CC
INTV
30k
30k
CC
SENSE
SENSE
RUN/SS
BOOST
PGND
EAIN
SW
TG
BG
I
TH
+
–
C
C
INTV
R
R2
SENSE
R1
CC
C
R
D
SS
L
C
C
B
B
V
IN
+
9
C
IN