LTC3863 Datasheet, PDF (9/36 Pages) Linear Technology – 60V Low IQ Inverting DC/DC Controller Wide Operating VIN Range: 3.5V to 60V

FUNCTIONAL DIAGRAM
0.4µA
RUN
RUN
+
–
1.26V –
CLOCK
PLLIN/MODE _MODE/CLOCK
DETECT
FREQ
20µA _VCO
R_FREQ
SGND
UVLO
3.25V
V_IN
SENSE
Q
SR
PLL
SYSTEM
LOGIC
CONTROL
ICMP
–+
Burst Mode
OPERATION
O.425V
GATE
DRV
IN
LDO
OUT
V_IN – 8V
CAP
+
SLOPE
COMPENSATION
OV
0.88V
10µA
0.8V
EN
EA
(G_m = 1.8mS)
SS
0.5µA
V_FBN
PGND
ITH
R_ITH
C_ITH1
V_FB
3863 FD
LTC3863
V_IN
C_IN
R_SENSE
MP
D1
C_CAP
L
V_OUT
C_OUT
C_SS
R_FB1
C_FB2
R_FB2
3863f
For more information www.linear.com/3863
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