Datasheet

LTC3878
8
3878fa
FuncTional DiagraM
15
SWITCH
LOGIC
OV
RUN
FCNT
R
DSS
20k
R
ON
TG
14
SW
16
BOOST
V
FB
R1
FCB
I
ON
0.8V
12
BG
13
PGND
PG
0.86V
1.5V
1.2µA
CURRENT
LIMIT
SOFT-START
–90mV
1.16V
160µA
0.8V
R
C
C
C1
1.7mS
2.4V
NEG
CLMP
3.3µA
POS
CLMP
FCNT 0.6V
0.74V
3878 FD
11
INTV
CC
C
B
C
INTVCC
C
OUT
V
OUT
C
VIN
V
IN
D
B
MT
MB
–
+
–
+
–
+
–
+
–
+
F
QS
R
t
ON
= (10pF)
OST
0.7V
I
ON
8
PGOOD
2
SGND
6
R2
5.3V
LDO
0.8V
REF
47
V
IN
10
I
CMP
I
REV
V
RNG
3
I
TH
5
OV
UV
–
+
–
+
+
–
+
–
+
–
+
–
–
–
sV
RNG
1.4V
0.7V
s4
EA
RUN
1
240k
C
SS
RUN/SS
1