 English |
|
|
|
|
|
|
|
| LTC3609 Datasheet, PDF (22/24 Pages) Linear Technology – 32V, 6A Monolithic Synchronous Step-Down DC/DC Converter | |||
| |||
| ◁ |
LTC3609
TYPICAL APPLICATIONS
5V to 32V Input to 1.8V/6A All Ceramic 1MHz
INTVCC
CVCC
4.7μF
6.3V
VIN
CF
RF1
0.1μF 1Ω
50V
SW
GND
40 39 38 37 36 35 34 33 32 31 30 29 28 27
VOUT
1.8V AT
6A
GND
COUT1
100μF
x2
L1
0.47μH
VIN
VIN
5V TO 32V
CIN
4.7μF
x2
41 SW
42 SW
43 SW
44 SW
45 SW
46 SW
47 SW
48 PVIN
49 PVIN
50 PVIN
51 PVIN
52
PVIN
LTC3609
SGND 26
NC 25
NC 24
23
VFB
22
ION
NC 21
SGND 20
FCB 19
ITH 18
VRNG 17
16
PGOOD
SGND 15
EXTVCC
C4
0.01μF
R2
20k
1%
R1
10k
1% RON
102k
1%
VOUT
VIN
INTVCC
JP1
R5
CC1
1500pF
5.76k
RPG1
100k
CC2
100pF
1 2 3 4 5 6 7 8 9 10 11 12 13 14
C5: TAIYO YUDEN JMK316BJ226ML-T
CIN: MURATA GRM32ER71H475K
COUT: MURATA GRM32ER60J107M
LI: 1HLP25CZERR80M01
KEEP POWER GROUND AND SIGNAL
GROUND SEPARATE. CONNECT AT
ONE POINT.
2Ω
SW
INTVCC
DB
CMDSH-3
CB1
0.22μF
SW
CSS
0.1μF
CVON
0.1μF
PGOOD
SGND
INTVCC
VOUT
3609 TA04
IL
5A/DIV
Transient Response
VOUT
200mV/DIV
20μs/DIV
LOAD STEP 500mA TO 4A
VIN = 12V
VOUT = 1.8V
FCB = 0V
3609 TA04b
100
90
80
70
60
50
40
30
20
10
0
10
Efï¬ciency vs Load Current
100
1000
LOAD CURRENT (mA)
10000
3609 TA04c
3609f
22
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese