LTC1435 Linear Technology, LTC1435 Datasheet - Page 6

• Manufacturer Part Number: LTC1435
• Description: High Efficiency Low Noise Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

FUNCTIONAL DIAGRA
LTC1435
6
V
R2
OSENSE
U
6
* FOLDBACK CURRENT LIMITING OPTION
R1
1.19V
V
3 A
FB
6V
–
+
2
U
EA
RUN/SS
SHUTDOWN
C
1.28V
SS
g
START
m
SOFT
RUN
= 1m
+
–
R
C
C
C
OV
3
I
D
TH
FB
180k
30k
*
+
–
W
I1
–
+
OSC
1
C
OSC
SENSE
8k
4k
C
+
OSC
S
R
8
Q
1 A
1.19V
0.6V
7
4
INTV
SENSE
SFB
4.8V
–
+
+
–
–
+
CC
SHUTDOWN
DROP
–
OUT
DET
–
+
I2
LDO
REG
SWITCH
V
5V
LOGIC
1.19V
IN
REF
13
V
IN
9
EXTV
SGND
CC
5
BOOST
INTV
PGND
SW
TG
BG
C
15
16
14
12
11
10
IN
D1
CC
INTV
+
V
+
IN
CC
D
C
B
B
R
SENSE
C
C
V
SEC
V
OUT
SEC
OUT
1435 • FD
+
+