LTC3729L-6 Datasheet, PDF (9/28 Pages) Linear Technology – PolyPhase, Synchronous Step-Down Switching Regulator

W
FU CTIO AL DIAGRA
LTC3729L-6
PLLIN
F_IN
3
PHASE DET
50k
PLLLPF
R_LP
2
CLKOUT
CLK1
C_LP
27
OSCILLATOR _CLK2
PHASMD
4
PHASE LOGIC
±2µA
DIFFOUT
7
V_OS–
8
V_OS+
9
40k
40k
A1
–
+
DUPLICATE FOR
SECOND
CONTROLLER
CHANNEL
INTV_CC
V_IN
BOOST
D_B
DROP
OUT
17, 24
TG
C_B
TOP
DET
BOT FCB
14, 26
FORCE BOT
SW
SQ
RQ
SWITCH
LOGIC
INTV_CC 15, 25
BG
BOT
SHDN
18, 22
PGND
19
+
C_IN
40k
40k
PGOOD
13
100µs
DELAY
0.66V
EAIN
I1
–+
5(V_FB)
INTV_CC
30k ^SENSE+
12, 30
30k ^SENSE–
L
R_SENSE
C_OUT
PROTECTION
0.54V
SLOPE
COMP
45k
45k
2.4V
11, 31
V_OUT
V_IN
V_IN
23
EXTV_CC
21
INTV_CC
5V
+ ²⁰
SGND
6
0.6V
V_REF
4.7V +
5V
–
LDO
REG
INTERNAL
SUPPLY
1.2µA
6V
SHDN
RST
EA
OV
RUN
SOFT
START
0.60V
0.66V
EAIN
R1
1
R2
I_TH ^CC
5
R_C
RUN/SS
28
C_SS
3729L-6 FBD
sn3729l6 3729l6fs
9