LTC3878 Linear Technology Corporation, LTC3878 Datasheet - Page 8

• Manufacturer Part Number: LTC3878
• Description: Wide Operating Range No RSENSE Step-Down Controller
• Manufacturer: Linear Technology Corporation

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LTC3878
FUNCTIONAL DIAGRAM
8
V
RNG
3
I
TH
1.4V
0.7V
240k
5
1
1.7mS
R
C
+
C
C1
I
CMP
EA
CLMP
CLMP
NEG
POS
+
–
160μA
0.8V
–
t
V
ON
RNG
+
–
+
–
– –
=
1.16V
0.7V
3.3μA
I
OST
ON
7
2.4V
R
20k
DSS
(10pF)
I
ON
+
–
+
–
4
FCNT
–90mV
R
S
+
–
0.6V
I
REV
R
Q
ON
CURRENT
LIMIT
SOFT-START
RUN
RUN/SS
OV
FCB
–
4
+
1
SWITCH
LOGIC
RUN
C
F
FCNT
SS
1.5V
0.8V
+
–
1.2μA
0.8V
5.3V
LDO
REF
INTV
BOOST
PGND
SW
TG
BG
10
16
15
14
11
12
13
CC
V
IN
C
C
B
INTVCC
OV
UV
PG
+
+
–
–
D
B
MT
MB
0.86V
0.74V
3878 FD
PGOOD
SGND
V
2
8
6
FB
R2
R1
C
C
VIN
OUT
V
V
IN
OUT
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