LTC3541-1 查看數據表（PDF） - Linear Technology

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LTC3541-1

High Efficiency Buck + VLDO Regulator

Linear Technology 

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

18

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