LTC1735I-1 Linear Technology, LTC1735I-1 Datasheet - Page 26

• Manufacturer Part Number: LTC1735I-1
• Description: High Efficiency Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

LTC1735-1
TYPICAL APPLICATIONS
26
POWER
GOOD
Q5
10k
INTV
Q4
470k
CC
100k
C
47pF
C2
CPU Core Voltage Regulator for 2-Step Applications (V
0.1 F
C
220pF
SS
47pF
220pF
0.1 F
33k
R
C
C
SS
C2
C
POWER
*OPTIONAL TO DEFEAT OVERCURRENT LATCHOFF
20k
GOOD
1000pF
R
470pF
C
43pF
C
OSC
C
1000pF
C
220pF
C
INTV
C
C
OSC
CC
100k
1
2
3
4
5
6
7
8
39pF
C
RUN/SS
I
PGOOD
SENSE
SENSE
V
SGND
TH
U
OSC
OSENSE
1
2
3
4
5
6
7
8
LTC1735-1
C
RUN/SS
I
PGOOD
SENSE
SENSE
V
SGND
TH
OSC
OSENSE
–
+
LTC1735-1
–
+
100k*
EXTV
BOOST
INTV
PGND
1.8V/5A Converter with Power Good
SW
V
BG
TG
EXTV
CC
CC
BOOST
INTV
IN
PGND
SW
V
BG
TG
16
15
14
13
12
11
10
9
CC
CC
IN
16
15
14
13
12
11
10
9
OPTIONAL:
CONNECT TO 5V
+
V
5V
IN
1 F
D
CMDSH-3
4.7 F
+
B
0.1 F
C
B
4.7 F
D
MBR0530
4.5V TO 22V
0.22 F
B
C
B
V
IN
IN
Q1
Si4412DY
Q2
Si4410DY
= 5V) with Burst Mode Operation Disabled
MBRS140T3
V
5V
IN
3.3 H
Q1
FDS6680A
Q2, Q3
FDS6680A
L1
2
MBRD835L
0.78 H
L1
C
22 F
50V
CER
IN
R
0.01
SENSE
C
150 F
6.3V
R
0.004
IN
2
SENSE
1735-1 TA03
1735-1 TA02
C
C
L1: PANASONIC ETQP6F3R3HFA
R
OUT
IN
SENSE
: MARCON THCR70LE1H226ZT
R2
32.4k
1%
R1
25.5k
1%
: PANASONIC EEFUEOG151R
100pF
: IRC LR 2010-01-R010F
C
C
C
L1: COILCRAFT 1705022P-781HC
Q4, Q5: 2N2222
R
OUT
IN
O
SENSE
: TAIYO YUDEN LMK550BJ476MM-B
: PANASONIC EEFUEOJ151R
SGND
+
: PANASONIC EEFUEOG181R
: IRC LRF 2512-01-R004-J
R2
32.4k
1%
R1
25.5k
1%
C
150 F
6.3V
PANASONIC SP
OUT
2
SGND
+
V
1.8V
5A
OUT
C
180 F
4V
OUT
3
C
47 F
10V
O
V
1.5V
12A
OUT