Datasheet

LTC3528/LTC3528B
13
3528fd
TYPICAL APPLICATIONS
1 Cell to 1.8V
SW
V
IN
499k
4.7µH
1M
4.7µF
10µF
33pF
3528 TA02a
LTC3528
SHDN
PGOOD
V
OUT
FB
V
IN
0.88V TO 1.6V
V
OUT
1.8V
250mA
OFF ON
GND
Dual 1 Cell to 1.8V, 3V Sequenced Supply
SW
V
IN
499k
475k
4.7µH
1M
4.7µF
10µF
LTC3528
SHDN
PGOOD
V
OUT
FB
V
IN
0.88V TO 1.6V
V
OUT1
1.8V
250mA
OFF ON
GND
SW
V
IN
499k
4.7µH
324k
4.7µF
10µF
33pF
3528 TA03a
LTC3528
SHDN
PGOOD
V
OUT
FB
V
OUT2
3V
200mA
GND
33pF
Efficiency
Output Voltage Sequencing
V
OUT2
V
OUT1
V
IN
PGOOD1
200µs/DIV
0.5V/DIV
3528 TA03b
LOAD CURRENT (mA)
0.01
80
90
100
100
3528 TA02b
70
60
0.1 1 10 1000
50
40
30
EFFICIENCY (%)
V
IN
= 0.9V
V
IN
= 1.2V
V
IN
= 1.5V