Datasheet

LT8609/LT8609A/LT8609B
22
Rev. H
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TYPICAL APPLICATIONS
1.8V 2MHz Step-Down Converter
Ultralow EMI 5V 2A Step-Down Converter
C1
0.1µF
C2
4.7µF
C3
1µF
C4
47µF
1210
C5
10pF
L1
2.2µH
R1
18.2k
R2
1M
R3
768k
R4
100k
C6
10nF
V
IN
EN/UV
SYNC
LT8609
INTV
CC
TR/SS
RT
GND
FB
PG
SW
BST
V
IN
2.8V
TO 20V
(42V TRANSIENT)
POWER
GOOD
f
SW
= 2MHz
L1 = COILCRAFT XFL4020-222ME
V
OUT
1.8V
3A
8609 TA05
P
SKIP
M1
NFET
C1
0.1µF
C2
4.7µF
C3
1µF
C4
47µF
1210
C5
10pF
L1
8.2µH
R1
110k
R2
1M
R3
301k
R4
100K
C6
10nF
FB1
BEAD
L3
4.7µH
C7
4.7µF
C8
4.7µF
V
IN
EN/UV
SYNC
LT8609
INTV
CC
TR/SS
RT
GND
FB
PG
SW
BST
V
IN
6V TO 40V
POWER GOOD
f
SW
= 400kHz
L1 = COILCRAFT XAL4040-822
FB1 = TDK MPZ2012S221AT000
C9 = OS-CON 63SXV33M
V
OUT
3.3V
3A
8609 TA06
C9
33μF
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