LTM4643 datasheet(4/24 Pages) AD

4 / 24 page

LTM4705

Rev. 0

For more information www.analog.com

TYPICAL PERFORMANCE CHARACTERISTICS

1.0V Output Transient Response

1.2V Output Transient Response

1.5V Output Transient Response

1.8V Output Transient Response

2.5V Output Transient Response

3.3V Output Transient Response

50s/DIV

4705 G04

VOUT

(AC-COUPLED)

50mV/DIV

LOAD STEP

500mA/DIV

VIN = 12V, VOUT = 1V, fSW = 1MHz

COUT = 2× 47F + 10F CERAMIC CAPACITORS

CFF = 100pF

1.25A (25%) LOAD STEP, 1A/s

50s/DIV

4705 G05

VOUT

(AC-COUPLED)

50mV/DIV

LOAD STEP

500mA/DIV

VIN = 12V, VOUT = 1.2V, fSW = 1MHz

COUT = 2× 47F + 10F CERAMIC CAPACITORS

CFF = 100pF

1.25A (25%) LOAD STEP, 1A/s

50s/DIV

4705 G06

VOUT

(AC-COUPLED)

50mV/DIV

LOAD STEP

500mA/DIV

VIN = 12V, VOUT = 1.5V, fSW = 1MHz

COUT = 2× 47F + 10F CERAMIC CAPACITORS

CFF = 100pF

1.25A (25%) LOAD STEP, 1A/s

50s/DIV

4705 G07

VOUT

(AC-COUPLED)

50mV/DIV

LOAD STEP

500mA/DIV

VIN = 12V, VOUT = 1.8V, fSW = 1MHz

COUT = 2× 47F + 10F CERAMIC CAPACITORS

CFF = 100pF

1.25A (25%) LOAD STEP, 1A/s

50s/DIV

4705 G08

VOUT

(AC-COUPLED)

50mV/DIV

LOAD STEP

500mA/DIV

VIN = 12V, VOUT = 2.5V, fSW = 1MHz

COUT = 2× 47F + 10F CERAMIC CAPACITORS

CFF = 100pF

1.25A (25%) LOAD STEP, 1A/s

50s/DIV

4705 G09

VOUT

(AC-COUPLED)

100mV/DIV

LOAD STEP

500mA/DIV

VIN = 12V, VOUT = 3.3V, fSW = 1MHz

COUT = 2× 47F + 10F CERAMIC CAPACITORS

CFF = 100pF

1.25A (25%) LOAD STEP, 1A/s

Efficiency vs Load Current

from 5VIN

Efficiency vs Load Current

from 12VIN

LOAD CURRENT (A)

100

4705 G01

2.5VOUT

3.3VOUT

1.8VOUT

1.5VOUT

1.2VOUT

1.0VOUT

LOAD CURRENT (A)

100

4705 G02

2.5VOUT

3.3VOUT

1.8VOUT

5.0VOUT

1.5VOUT

1.2VOUT

1.0VOUT

LOAD CURRENT (mA)

0.01

0.1

100

CCM

Burst Mode OPERATION

4705 G03

Burst Mode Efficiency, 12VIN,

1.5VOUT

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