LTC3443 Linear Technology, LTC3443 Datasheet - Page 14

• Manufacturer Part Number: LTC3443
• Description: High Current Micropower 600kHz Synchronous Buck-Boost DC/DC Converter
• Manufacturer: Linear Technology

LTC3443
14
TYPICAL APPLICATIO S
Li-Ion
2.8V TO 4.2V
*1 = Burst Mode OPERATION
0 = FIXED FREQUENCY
U
D2
C1
10µF
*
100
10
90
80
70
60
40
30
20
10
50
4
9
1
7
3
0
0.1
Li-Ion to 3.3V at 1.2A Converter
SW1
PV
V
SHDN/SS
MODE/SYNC
PGND
WITH SCHOTTKY DIODES:
PHILIPS PMEG2010EA
Burst Mode
OPERATION
IN
V
IN
IN
LTC3443
= 2.8V
C1: TAIYO YUDEN JMK212BJ106MG
C2: TAIYO YUDEN JMK325BJ226MM
D1, D2: PHILLIPS PMEG2010EA
L1: SUMIDA CDRH6D28-6R0NC
6µH
L1
1
Efficiency vs Load
PGND
V
SW2
GND
OUT
FB
V
10
C
I
OUT
V
V
IN
5
8
12
11
2
6
IN
= 3.6V
(mA)
= 4.2V
100
D1
15k
1000
560pF
3443 TA03b
340k
200k
10000
2.2k
220pF
3443 TA03a
C2
44µF
(2 × 22µF)
V
3.3V
1.2A
OUT
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