LTC3850-2_15 Datasheet, PDF (9/36 Pages) Linear Technology – Dual, 2-Phase Synchronous Step-Down Switching Controller

LTC3850-2
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
+
FCNT
BURSTEN
ON
SWITCH
LOGIC
AND
ANTI-
SHOOT
THROUGH
RUN
OV
SLOPE COMPENSATION
INTV_CC
UVLO
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
V_OUT
+
C_OUT
M2
1
SLOPE RECOVERY
51k
ACTIVE CLAMP
I_THB
0.74V
UV
R2
V_FB
V_IN
SLEEP
0.8V
REF
EA
–+
0.55V
– ^SS +
0.64V
– ^RUN +
1.2V
OV
1.3μA
R1
0.86V
SGND
0.5μA
I_{TH RC} ^CC1
RUN
TK/SS
C_SS
38502 FD
38502f
9