LTC3862 Datasheet, PDF (11/40 Pages) Linear Technology – Multi-Phase Current Mode Step-Up DC/DC Controller

FUNCTIONAL DIAGRAM
CLKOUT
SYNC
LTC3862
PLLFLTR
R_P
C_{P DMAX}
PHASEMODE
FREQ
R_FREQ
SLOPE
SLOPE
COMPENSATION
BLANK
BLANK
LOGIC
BLOGIC
3V8
SS
5μA
C_SS
OT
UV
SD
ITH
R_C
PSKIP
C_C
PSKIP _{– +}
0.275V
SYNC
DETECT
CLK1
VCO
CLK2
5V
LDO
UV ^UVLO
3.8V
LDO
OT
OVER
TEMP
BIAS
V_IN
INTV_CC
3V8
C_IN
C_VCC
C_3V8
V_IN
L
D_MAX
OT
UV
S
R1 Q
SD
R2
BLOGIC
PWM LATCH
LOGIC
OV _ITRIP
PSKIP
ICMP
R_LOOP
GATE
PGND
SENSE⁺
SENSE^–
V TO I
SD
OV
+ ^EA– ^{OV – +}
1.223V 1.345V
RUN_{– +}
1.22V
DUPLICATE FOR
SECOND CHANNEL
V_FB
4.5μA
SGND
0.5μA _RUN
D
+
M _COUT
R_S
V_OUT
R2
R1
3862 FD
3862fb
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