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| LTC3523-2_15 Datasheet, PDF (13/16 Pages) Linear Technology – Synchronous 600mA Step-Up and 400mA Step-Down DC/DC Converters | |||
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TYPICAL APPLICATIONS
LTC3523/LTC3523-2
Power Sequence Operation
VIN
1.8V TO 3.2V
+
2-CELL
ALKALINE
VOUT1
STEP-UP
OUTPUT
3.3V
200mA
4.7μF
4.7μF
634k
365k
4.7μH
VIN1 VIN2 VBAT
SW1
SW2
VOUT
FB1
LTC3523
FB2
MODE
PGOOD1
SHDN1
PGOOD2
SHDN2
GND1 GND2 GND3
4.7μH
10pF 511k
511k
10μF
VOUT2
STEP-DOWN
OUTPUT
1.2V
200mA
100k
VIN
OFF ON
3523 TA02a
VOUT1
2V/DIV
PGOOD2
VOUT2
1V/DIV
SHDN2
500μs/DIV
3523 TA02b
3523fb
13
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