Datasheet

LTC3823
9
3823fd
FUNCTIONAL DIAGRAM
0.5V
0.6V
2.0V
0.5V
V
RNG
–
+
–
+
–
+
–
+
–
+
I
ON
FCB
V
IN
1 μ A
R
ON
V
VON
I
ION
t
ON
= (10pF)
R
SQ
20k
I
CMP
I
REV
Q6
3.3
μ A
RUN
SWITCH
LOGIC
AND
ANTI-
SHOOT
THROUGH
BG
ON
FCNT
F
0.6V
OV
1
240k
Q1
Q2
1.5V
EXTERNAL TO CHIP
I
TH
R
C
C
C1
EA
SS
Q4
V
DIFFOUT
SGND
R2
(EXT)
R1
(EXT)
RUN
PGND
PGOOD
DRV
CC
INTV
CC
INTV
CC
SW
TG
C
B
V
IN
C
IN
BOOST
–
+
–
+
OV
UV
C
VCC
V
OUT
M2
M1
L1
C
OUT
D
B
I
THB
V
OUT
0.6V
4.8V
V
ON
R
SENSE
(OPTIONAL)
SENSE
+
SENSE
–
SENSE
+
SENSE
–
BG M2
*CONNECTION W/O
SENSE RESISTOR
SW
PGND
(0.5~2)
–
+
FOLDBACK
–
+
0.25V
TRACK/SS
FOLDBACK
DISABLED
AT START-UP
RUN
V
FB
PLLIN
PLLFLTR
PLL-SYNC
+
V
INSNS
Z0
Z1/SS
ENABLE
Z2
Z
VCC
+
+
5V
REG
1.7 μ A
C
SS
3823 FD
R
R
R
INTV
CC
40k
V
OUTSENSE
–
V
OUTSENSE
+
40k
40k
40k
–
+