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| LTC3527-1_15 Datasheet, PDF (16/22 Pages) Linear Technology – Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters | |||
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LTC3527/LTC3527-1
TYPICAL APPLICATIONS
1.2MHz, 1-Cell to VOUT1 = 1.8V, VOUT2 = 5V
0.85V TO 1.60V
+ SINGLE
ALKALINE
CELL
CIN
4.7μF 4.7μH
VIN1 VIN VIN2
10μH
VOUT
1.8V
200mA
COUT1
4.7μF
ON
OFF
612M
1.21M
SW1
SW2
15pF
VOUT1
FB1
LTC3527
VOUT2
FB2
PGOOD1
SHDN1
PGOOD2
SHDN2
MODE GND FSEL
15pF 3.24M
1.02M
ON
OFF
L: SUMIDA CDRH3D164R7
CIN, COUT: TAIYO YUDEN X5R JMK212BJ475MD
35271 TA03
VOUT
5V
50mA
COUT2
4.7μF
100
90
80
70
60
50
40
30
20
0.01
Boost 1 Efï¬ciency
1.2V 1.5V
BURST
1V
FIXED
1.2V
1V
1.5V
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 TA03b
Boost 2 Efï¬ciency
100
90
1.2V 1.5V
1.5V
80
70
BURST
1V
1.2V
1V
60
50
40
FIXED
30
20
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
35271 TA03c
35271fc
16
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