LTC3541(RevA) 查看數據表（PDF） - Linear Technology

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LTC3541
(Rev.:RevA)

High Efficiency Buck + VLDO Regulator

Linear Technology 

LTC3541

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

SW ENVLDO

2.2µH

VIN

MODE

ENBUCK GND

22pF 154k

LTC3541

10µF

BUCKFB LFB

LVIN

LVOUT

73k

PGND

165k

576k

VOUT2

1.8V

300mA

2.2µF

3541 TA04a

VOUT

2V/DIV

LVOUT

2V/DIV

VIN

2V/DIV

IVOUT = 200mA

ILVOUT = 300mA

4ms/DIV

3541 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

SW ENVLDO

VIN

MODE

ENBUCK GND

LTC3541

BUCKFB LFB

LVIN

LVOUT

PGND

150k

412k VOUT2

1.5V

300mA

2.2µF

3541 TA05a

VOUT

2V/DIV

LVOUT

2V/DIV

VIN

2V/DIV

IVOUT = 200mA

ILVOUT = 30mA

4ms/DIV

3541 TA05b

3541fa

18

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