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LTC3541-1 Datasheet, PDF (18/20 Pages) Linear Technology – High Efficiency Buck + VLDO Regulator
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LTC3541-1
TYPICAL APPLICATIO S
Dual Output Using Minimal External Components with VOUT2 Controlled by External Logic
Signal, Buck in Burst Mode Operation for High Efficiency Down to Low Load Currents
VOUT1
2.5V
200mA
VIN
3.2V TO 4.2V
2.2µH
22pF
154k
10µF
73k
VIN ENVLDO
ENBUCK MODE
SW
GND
LTC3541-1
LVIN
LFB
BUCKFB LVOUT
PGND
165k
576k
VOUT2
1.8V
300mA
2.2µF
35411 TA04a
VOUT
2V/DIV
LVOUT
2V/DIV
VIN
2V/DIV
IVOUT = 200mA
ILVOUT = 300mA
4ms/DIV
35411 TA04b
Dual Output Using Minimal External Components with VOUT1 Controlled by External Logic
Signal, Buck in Burst Mode Operation for High Efficiency Down to Low Load Currents
VIN
2.9V TO 4.2V
VOUT1
1.8V
200mA
2.2µH
22pF
143k
10µF
115k
VIN ENVLDO
ENBUCK MODE
SW
GND
LTC3541-1
LVIN
LFB
BUCKFB LVOUT
PGND
150k
412k
VOUT2
1.5V
300mA
2.2µF
35411 TA05a
VOUT
2V/DIV
LVOUT
2V/DIV
VIN
2V/DIV
IVOUT = 200mA
ILVOUT = 30mA
4ms/DIV
35411 TA05b
35411fa
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