LTC3527EUD-1-TR 查看數據表（PDF） - Linear Technology

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LTC3527EUD-1-TR

Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters

Linear Technology 

LTC3527/LTC3527-1

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

VOUT and IIN During Start-Up

VOUT1

1V/DIV

INPUT

CURRENT

200mA/DIV

SHDN1 PIN

1V/DIV

VOUT1 = 3.3V

COUT1 = 10μF

100μs/DIV

35271 G25

VOUT1 Load Step Response

Burst Mode Operation at 1.2MHz

VOUT1

100mV/DIV

AC-COUPLED

VOUT1 Load Step Response

Fixed Frequency at 1.2MHz

VOUT1

100mV/DIV

AC-COUPLED

LOAD

CURRENT

50mA/DIV

100μs/DIV

VIN = 3.6V 50mA TO 150mA STEP

VOUT1 = 5V COUT1 = 10μF

35271 G26

VOUT2 Load Step Response

Fixed Frequency at 2.2MHz

VOUT2

100mV/DIV

AC-COUPLED

LOAD

CURRENT

50mA/DIV

100μs/DIV

VIN = 3.6V 20mA TO 170mA STEP

VOUT1 = 5V COUT1 = 10μF

35271 G27

VOUT1 = 5V Load Regulation

0.3

VIN = 2.4V

L = 3.3µH

0.2 MODE = HIGH

0.1

0

–0.1

–0.2

–0.3.

0

50 100 150 200 250 300 350 400

ILOAD1 (mA)

35271 G29

LOAD

CURRENT

50mA/DIV

100μs/DIV

VIN = 3.6V 50mA TO 100mA STEP

VOUT2 = 5V COUT2 = 10μF

35271 G28

VOUT2 = 3.3V Load Regulation

0.3

VIN = 2.4V

L = 3.3µH

0.2 MODE = HIGH

0.1

0

–0.1

–0.2

–0.3.

0

100

200

ILOAD2 (mA)

300

35271 G30

35271fc

7

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