LTC3829_15 Datasheet, PDF (10/40 Pages) Linear Technology – 3-Phase, Single Output Synchronous Step-Down DC/DC Controller with Diffamp

LTC3829
FUNCTIONAL DIAGRAM
MODE
PLLIN
ITEMP
EXTV_CC
4.7V
FREQ
TEMPSNS
MODE/SYNC
DETECT
F
0.6V
5V
REG
F
PLL-SYNC
CLKOUT
IFAST
I_LIM
OSC
3k
I_COMP
S
RQ
–
+ ^IREV
IFAST
FCNT
ON
BURSTEN
SWITCH
LOGIC
AND
ANTISHOOT-
THROUGH
RUN
OV
SLOPE
COMPENSATION
INTV_CC
UVLO
1
51k
SLOPE RECOVERY
I_THB
ACTIVE CLAMP
SLEEP
SHED
COMP
ISET
V_IN
ISET
SS
RUN
EA
0.6V
REF
0.5V
1.22V
UV
OV
1.25µA
0.55V
ISET
ISET
I_{TH RC} ^CC1
RUN TK/SS CSS
V_IN
INTV_CC
BOOST
+
C_IN
V_IN
INTV_CC
TG
C_B
SW
SENSE⁺ D_B
SENSE^–
BG
PGND
C_VCC
M1
L1
M2
V_OUT
+
C_OUT
PGOOD
0.54V
V_FB
DIFFOUT
R2
DIFFAMP
R_AVP
40k
DIFFP
40k
R1
0.66V
SGND
40k
R_PRE-AVP
AVP
1.0µA
40k ^DIFFN
SENSE1⁺
SENSE1^–
SENSE2⁺
SENSE2^–
SENSE3⁺
SENSE3^–
3829 BD
3829fc
10
For more information www.linear.com/LTC3829