LTC1735 Linear Technology, LTC1735 Datasheet - Page 27

• Manufacturer Part Number: LTC1735
• Description: High Efficiency Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

TYPICAL APPLICATIO S
47pF
220pF
0.1 F
C
C
SS
C2
47pF
*OPTIONAL TO DEFEAT OVERCURRENT LATCHOFF
20k
220pF
R
0.1 F
C
C
C
SS
C2
1000pF
220pF
33k
R
C
C
C
C
1000pF
OSC
470pF
C
39pF
C
1.8V/5A Converter from Design Example with Burst Mode Operation Disabled
C
43pF
1
2
3
4
5
6
7
8
OSC
C
RUN/SS
I
FCB
SGND
V
SENSE
SENSE
TH
OSC
OSENSE
1
2
3
4
5
6
7
8
CPU Core Voltage Regulator for 2-Step Applications (V
LTC1735
C
RUN/SS
I
FCB
SGND
V
SENSE
SENSE
TH
–
+
OSC
OSENSE
100k*
U
LTC1735
EXTV
–
+
INTV
BOOST
PGND
SW
V
BG
TG
CC
CC
IN
EXTV
BOOST
INTV
PGND
16
15
14
13
12
11
10
9
SW
V
BG
TG
CC
CC
IN
V
16
15
14
13
12
11
10
9
IN
1 F
+
OPTIONAL:
CONNECT TO 5V
+
D
MBR0530
4.7 F
0.22 F
B
C
4.7 F
D
CMDSH-3
B
B
0.1 F
C
B
4.5V TO 22V
V
5V
IN
M1
FDS6680A
M2, M3
FDS6680A
V
2
IN
MBRD835L
M1
Si4412DY
M2
Si4410DY
0.78 H
MBRS140T3
L1
3.3 H
L1
C
150 F
6.3V
0.004
IN
R
2
SENSE
C
22 F
50V
CER
IN
R
IN
0.01
SENSE
= 5V)
1735 TA03
100pF
C
C
C
L1: COILCRAFT 1705022P-781HC
R
OUT
IN
O
SENSE
: TAIYO YUDEN LMK550BJ476MM-B
C
C
L1: PANASONIC ETQP6F3R3HFA
R
: PANASONIC EEFUEOJ151R
1735 TA02
OUT
IN
SENSE
: PANASONIC EEFUEOG181R
: MARCON THCR70LE1H226ZT
: IRC LRF 2512-01-R004-J
R2
32.4k
1%
R1
25.5k
1%
: PANASONIC EEFUEOG151R
R2
32.4k
1%
R1
25.5k
1%
: IRC LR 2010-01-R010F
SGND
+
SGND
+
C
150 F
6.3V
PANASONIC SP
C
180 F
4V
OUT
2
OUT
3
LTC1735
V
1.8V
5A
OUT
C
47 F
10V
O
27
V
1.5V
12A
OUT