LTC3608 LINER [Linear Technology], LTC3608 Datasheet - Page 20

• Manufacturer Part Number: LTC3608
• Description: 18V, 8A Monolithic Synchronous Step-Down DC/DC Converter
• Manufacturer: LINER [Linear Technology]

LTC3608
TYPICAL APPLICATIONS
20
1.5V AT
V
GND
OUT
8A
(OPTIONAL)
C
C
L1: CDEP85NP-R20MC-50
C5: TAIYO YUDEN JMK316BJ226ML-T
KEEP POWER GROUND AND SIGNAL GROUND SEPARATE.
CONNECT AT ONE POINT.
IN
OUT1
22μF
10μF
6.3V
200mV/DIV
C
: TAIYO YUDEN TMK432BJ106MM
C5
3×
= PGND
= SGND
3.6V
IN
V
: TDKC4532X5ROJ107M
IN
5A/DIV
V
OUT
I
(OPTIONAL)
L
LOAD STEP 1A-8A
V
V
FCB = 0V
C
100μF
IN
OUT
10μF
OUT1
10V
= 3.6V
×2
C6
= 1.5V
+
+
Transient Response
GND
0.2μH
L1
V
200mV
IN
PGND
41
42
43
44
45
46
47
48
49
50
51
52
SW
SW
SW
SW
SW
SW
SW
PV
PV
PV
PV
PV
IN
IN
IN
IN
IN
40 39 38 37 36 35 34 33 32 31 30 29 28 27
1
3608 TA02a
2
3
INTV
4
3.6V Input to 1.5V/8A at 750kHz
CC
5
4.7μF
C
6.3V
VCC
6
LTC3608
7
8
SW
INTV
9 10 11 12 13 14
C
0.22μF
B1
CC
C
0.1μF
C
0.47μF
25V
SS
F
PGOOD
SGND
SGND
SGND
V
FCB
RNG
V
I
I
NC
NC
NC
ON
TH
FB
100
26
25
24
23
22
21
20
19
18
17
16
15
95
90
85
80
75
70
65
60
55
50
100
V
(OPTIONAL)
IN2
R
510k
= 5V
SS1
SGND
R1
20.5k
1%
11k
Effi ciency Curve
1000
LOAD CURRENT (A)
C4
0.01μF
DCM
39.2k
R
100k
V
PG1
IN
EXTV
(OPTIONAL)
C1
C
0.01μF
CC
ON
INTV
INTV
CCM
V
1000
OUT
V
FREQ = 750kHz
IN
CC
CC
(OPTIONAL)
= 3.6V
0.1μF
113k
R
1%
ON
6.19k
3608 TA02b
R5
10000
R2
30.1k
1%
3300pF
100pF
C
C
C1
C2
(OPTIONAL)
3608 TA02
C2
V
V
SGND
V
3608fa
OUT
IN
OUT