Block Diagram - Linear Technology Analog Devices LT8708 Datasheet

BLOCK DIAGRAM

V
IN
R
SENSE1
CSNIN
–
+
A3
–
CSPIN
+
V
INCHIP
IMON_INN
IMON_INP
RT
LDO33
CLKOUT
OSC
SYNC
DIR
LDO33
RVS
MODE
3.3V
SS
R
SHDN1
SHDN
+
R
SHDN2
–
1.234V
+
6.4V
EXTV
CC
–
6.3V
EN
LDO
REG
INTV
CC
R
SENSE
SWEN
CSN CSP
+
A4
–
+
–
UV_INTV OT
CC
START-UP LOGIC
UV_LDO33 UV_V UV_GATEV
IN CC
3.3V
LDO
LDO
REG
V REG
IN
6.3V
INTERNAL
EN
LDO
SUPPLY2
REG
INTERNAL
SUPPLY1
LDO33
Figure 1. Block Diagram
For more information
+
A5
–
CONTROL
AND
RVS
STATE
LOGIC
A2
EA7
+
1.207V
A6
–
EA6
+
1.209V
EA5
–
IMON_INP
+
EA3
–
1.205V
+
1.207V
EA4
–
V
C
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BOOST1
C
TG1 B1
SW1
GATEV
CC
BG1
GND
BOOST CAPACITOR
CHARGE CONTROL
BG2
SW2
TG2
C
B2
BOOST2 D
B2
R
RVSOFF RVSOFF
R
VINHIMON
HIMON3
1.207V
VOUTLOMON
R
LOMON3
IMON_OP
CSPOUT
+
+
+
CSNOUT
A1 R
SENSE2
–
–
–
ICN
ICP
IMON_ON
+
EA2
V
IN
–
R
FBIN1
FBIN
R
FBIN2
1.21V
EA1
IMON_INN
FBOUT
LT8708
D
B1
M1
D1
(OPT)
D2
(OPT)
M2
M3
D3
M4 (OPT)
D4
(OPT)
V
IN
LDO33
R
HIMON1
R
HIMON2
V
OUT
R
LOMON1
R
LOMON2
R
FBOUT1
R
FBOUT2
8708 F01
Rev 0
15