LTC3899_15 Datasheet, PDF (14/38 Pages) Linear Technology – 60V Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller

LTC3899
Functional Diagrams
CLK1
PLLIN/MODE
BOOST CHANNEL 3
CHARGE
PUMP
DRV_CC
BOOST3
SQ
RQ
BOTTOM
TOP
TG3
SHDN
SW3
SWITCHING
DRV_CC
LOGIC
BOT
BG3
GND
0.425V +
SLEEP
–
I_CMP
+ ^IR
+– –
3mV
2.8V
0.7V
SENSE3^–
SENSE3⁺
V_OUT3
C_B
C_OUT
C_IN
V_IN3
L
R_SENSE
SLOPE COMP
SNSLO
2V
3.5V
150nA
EA
OV
1.2V
SS3
1.32V
10µA
RUN3
SHDN
SNSLO
VPRG3
V_FB3
R_B
R_A
ITH3
SS3
C_C
C_C2
R_C
C_SS
3899 FD02
3899f
14
For more information www.linear.com/LTC3899