LTC3853_15 Datasheet, PDF (10/36 Pages) Linear Technology – Triple Output, Multiphase Synchronous Step-Down Controller

LTC3853
FUNCTIONAL DIAGRAM
FREQ/PLLFLTR
MODE/PLLIN
PLL-SYNC
MODE/SYNC
DETECT
EXTV_CC
4.7V
–+
F
0.8V
5V
REG
–+
F
OSC
3k
I_CMP
S
RQ
–
I_REV
+
SLOPE
I_LIM
COMPENSATION
FCNT
BURSTEN
ON
SWITCH
LOGIC
AND
ANTI-
SHOOT
THROUGH
RUN
OV
INTV_CC
UVLO
1
SLOPE RECOVERY
UV
51k
ACTIVE CLAMP
I_THB
V_IN
SLEEP
0.8V
REF
–+
0.55V
OV
– ^SS +
– ^RUN +
EA
1.3µA
0.64V
1.2V
I_{TH RC} ^CC1
RUN
TK/SS
C_SS
V_IN
+
V_IN
C_IN
INTV_CC
BOOST
TG
C_B
SW
SENSE⁺ DB
SENSE^–
BG
C_VCC
PGND
PGOOD
INTV_CC
M1
L1
M2
V_OUT
+
C_OUT
0.74V
R2
V_FB
R1
0.86V
SGND
0.5µA
3853 FD
3853fc
10
For more information www.linear.com/LTC3853