LTC3528-2 데이터 시트보기 (PDF) - Linear Technology

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LTC3528-2

1A, 2MHz Synchronous Step-Up DC/DC Converter in 2mm × 3mm DFN

Linear Technology 

LTC3528-2

TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted)

Fixed Frequency VOUT Ripple and

Inductor Current Waveforms

Burst Mode Waveforms

VOUT

20mV/DIV

IL

200mA/DIV

VIN = 1.2V

VOUT = 3.3V

COUT = 10µF

CFF = 33pF

IOUT = 100mA

L = 2.2µH

500ns/DIV

VOUT

50mV/DIV

INDUCTOR

CURRENT

100mA/DIV

35282 G19

VIN = 3.6V

VOUT = 5V

COUT = 10µF

CFF = 33pF

ILOAD = 30mA

5µs/DIV

VOUT and IIN During Soft-Start

VOUT

1V/DIV

IIN

200mA/DIV

SHDN PIN

35282 G20

VIN = 1.2V

VOUT = 3.3V

COUT = 10µF

L = 2.2µH

200µs/DIV

35282 G21

Load Step Response (Fixed

Frequency, 3.6V to 5V)

Load Step Response (Burst Mode

Operation, 3.6V to 5V)

VOUT

100mV/DIV

LOAD

CURRENT

200mA/DIV

VIN = 3.6V

VOUT = 5V

COUT = 10µF

L = 2.2µH

20µs/DIV

LOAD CURRENT = 100mA TO 550mA

35282 G22

Load Step Response (Fixed

Frequency, 1.2V to 3.3V)

VOUT

100mV/DIV

LOAD

CURRENT

200mA/DIV

VIN = 3.6V

VOUT = 5V

COUT = 10µF

L = 2.2µH

20µs/DIV

LOAD CURRENT = 20mA TO 550mA

35282 G23

Load Step Response (Burst Mode

Operation, 1.2V to 3.3V)

VOUT

100mV/DIV

LOAD

CURRENT

100mA/DIV

VIN = 1.2V

VOUT = 3.3V

COUT = 10µF

L = 2.2µH

20µs/DIV

LOAD CURRENT = 20mA TO 170mA

35282 G24

VOUT

100mV/DIV

LOAD

CURRENT

100mA/DIV

VIN = 1.2V

VOUT = 3.3V

COUT = 10µF

L = 2.2µH

20µs/DIV

LOAD CURRENT = 10mA TO 160mA

35282 G25

35282fb

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