Datasheet

LTC3561
14
3561f
TYPICAL APPLICATIO S
U
All Ceramic 2-Cell to 3.3V and 1.8V Converters
LTC3402
V
IN
SHDN
MODE/SYNC
PGOOD
R
T
SW
V
OUT
FB
V
C
GND
1000pF
10pF
2
CELLS
C1
10µF
47k
49.9k
604k
1M
V
OUT
3.3V
120mA/1A
L1
4.7µH
D1
C2
44µF
(2 × 22µF)
C1: TAIYO YUDEN JMK212BJ106MG
C2: TAIYO YUDEN JMK325BJ226MM
C5, C6: TAIYO YUDEN JMK325BJ226MM
V
IN
= 2V TO 3V
0 = FIXED FREQ
1 = Burst Mode OPERATION
+
LTC3561
PV
IN
SW
SV
IN
I
TH
SHDN/R
T
PGNDSGND
V
FB
L2
2.2µH
V
OUT
1.8V/1A
887k
412k
1000pF
3561 TA06
C6
22µF
10pF
13k
C5
10µF
324k
D1: ON SEMICONDUCTOR MBRM120LT3
L1: TOKO A916CY-4R7M
L2: TOKO A914BYW-2R2M (D52LC SERIES)
I
LOAD
(mA)
1
40
EFFICIENCY (%)
80
90
100
10 100 1000
3561 TA07
70
60
50
V
IN
= 2.4V
1.8V
3.3V
Efficiency and V
OUT
Ripple