Datasheet

26
LTC1929/LTC1929-PG
TYPICAL APPLICATIO S
U
Figure 11. 5V Input, 1.6V/40A CPU Power Supply
C16 0.47µF
C3, C4: OS-CON 6SP680M C18–C21: T510E108M004 L1, L2: SUMIDA CEP149-1R0MC Q1–Q8: FDS6670A OR FDS7760A
28 27 26 25 24 23 22 21 20 19 18 17 16 15
1 2 3 4 5 6 7 8 9
10 11 12 13 14
C17
1000pF
NC
TG1
SW1
BOOST1
V
IN
BG1
EXTV
CC
INTV
CC
PGND
BG2
BOOST2
SW2
TG2
AMPMD
RUN/SS SENSE1
+
SENSE1
–
EAIN PLLFLTR PLLIN NC I
TH
SGND V
DIFFOUT
V
OS
–
V
OS
+
SENSE2
–
SENSE2
+
U1
LTC1929
Q8Q7 Q6Q5
Q4
L1
1µH
R4
0.002Ω
Q3
Q2Q1
C12 1µF
C13 2.2µF
C8 0.47µF
D1 BAT54A
V
IN
+
V
IN
–
5V
C22 1µF
C23 1µF
+
C3
C2 1µF
C1 1000pF
+
C4
12
3
C14 10µF
L2
1µH
R8
0.002Ω
R1
10Ω
1929 F11
+
C18
R9 50Ω
+
C19
+
C20
+
C21
C24 10µF
V
OUT
+
V
OUT
–
V
OSENSE
+
V
OSENSE
–
1.6V/40A REMOTE SENSE
R10 50Ω
R3
10k
C7
0.1µF
R2
2.7k
C9 0.01µF
C10 100pF
C11 1nF
C15
470pF
R7
8.06k
R6
8.06k
R5 10k