LTC3543EDCB View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC3543EDCB

600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum

Linear Technology 

LTC3543

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

Load Step

VOUT

AC COUPLED

100mV/DIV

IL

200mA/DIV

ILOAD

200mA/DIV

20μs/DIV

VIN = 3.6V

VOUT = 1.5V

ILOAD = 3mA TO 200mA

VMODE = 0V

3543 G22

Load Step

VOUT

AC COUPLED

200mV/DIV

IL

200mA/DIV

ILOAD

200mA/DIV

20μs/DIV

VIN = 3.6V

VOUT = 1.5V

ILOAD = 3mA TO 200mA

VMODE = 3.6V

3543 G23

Load Step

VOUT

AC COUPLED

100mV/DIV

IL

200mA/DIV

ILOAD

200mA/DIV

10μs/DIV

VIN = 3.6V

VOUT = 1.5V

ILOAD = 100mA TO 600mA

VMODE = 3.6V

3543 G24

Spread Spectrum Load Step

VOUT

AC COUPLED

100mV/DIV

IL

200mA/DIV

ILOAD

200mA/DIV

10μs/DIV

VIN = 3.6V

VOUT = 1.5V

ILOAD = 100mA TO 200mA

VMODE = 0.6V

3543 G25

PLL Operation

VC1

200mV/DIV

C1 = 4μF

100μs/DIV

3MHz TO 1MHz STEP

3543 G26

PLL Operation at 3MHz

VMODE

2V/DIV

SW

2V/DIV

100ns/DIV

3543 G27

3543fa

6

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