LTC3788 Datasheet, PDF (11/32 Pages) Linear Technology – 2-Phase, Dual Output Synchronous Boost Controller

BLOCK DIAGRAM
LTC3788
PHASMD
CLKOUT
FREQ
20μA
CLK2
VCO _CLK1
PFD
PLLIN/
MODE
100k
ILIM
VBIAS
EXTV_CC
+
4.8V _–
5.4V
LDO
EN
SYNC
DET
CURRENT
LIMIT
5.4V
LDO
EN
INTV_CC
SHDN
–+
3.8V
SGND
DUPLICATE FOR SECOND CONTROLLER CHANNEL
S
RQ
SHDN
SWITCHING
LOGIC
AND
CHARGE
PUMP
BOOST
TG
SW
INTV_CC
BG
INTV_CC
D_B
C_B
0.425V +
–
SLEEP
PGND
–+
2.8V
0.7V
SLOPE COMP
+
+– –
2mV
SENSE ^–
SENSE⁺
L
R_SENSE
SENS LO
VFB
2.5V
EA
1.2V
SS
V_OUT
C_OUT
V_IN
C_IN
0.5μA/
4.5μA
11V
SHDN
RUN
SENS
LO
OV
1.32V
ITH
10μA _{1.32V +}
–
VFB
+
1.08V –
SS
PGOOD
C_C
C_C2
R_C
C_SS
3788 BD
3788f
11