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LTC3615

3615f

Load Step Transient in FCM

with AVP Mode

Load Step Transient in

FCM External Compensation

Load Step Transient

in Pulse-Skipping Mode

Load Step Transient in

Burst Mode Operation

VOUT

200mV/DIV

1A/DIV

50µs/DIV

3615 G12

VOUT = 1.8V

ILOAD = 100mA TO 3A

VMODE = 1.5V

COMPENSATION FIGURE 1

VOUT

200mV/DIV

1A/DIV

50µs/DIV

3615 G13

VOUT = 1.8V

ILOAD = 100mA TO 3A

VMODE = 3.3V

COMPENSATION FIGURE 1

VOUT

200mV/DIV

1A/DIV

50µs/DIV

3615 G14

VOUT = 1.8V

ILOAD = 100mA TO 3A

VMODE = 0V

COMPENSATION FIGURE 1

VOUT

100mV/DIV

1A/DIV

50µs/DIV

3615 G15

VOUT = 1.8V

ILOAD = 100mA TO 3A

VMODE = 1.5V

VITH = 3.3V

OUTPUT CAPACITOR VALUE FIGURE 1

Pulse-Skipping Mode Operation

Forced Continuous Mode

Operation (FCM)

Burst Mode Operation

VOUT

20mV/DIV

200mA/DIV

1µs/DIV

3615 G09

VOUT = 1.8V

IOUT = 100mA

VMODE = 1.5V

VOUT

20mV/DIV

500mA/DIV

20µs/DIV

3615 G10

VOUT = 1.8V

IOUT = 75mA

VMODE = 3.3V

VOUT

20mV/DIV

500mA/DIV

20µs/DIV

3615 G11

VOUT = 1.8V

IOUT = 75mA

VMODE = 0V

Load Step Transient in Forced

Continuous Mode Sourcing and

Sinking Current

VOUT

200mV/DIV

2A/DIV 0A

50µs/DIV

3615 G16

VOUT = 1.8V

ILOAD = –1.5A TO 3A

VMODE = 1.5V

COMPENSATION FIGURE 1

Internal Start-Up in Forced

Continuous Mode

VOUT

500mV/DIV

RUN

1V/DIV

1A/DIV

PGOOD

2V/DIV

500µs/DIV

3615 G17

VOUT = 1.8V

IOUT = 3A

VMODE = 1.5V

Typical perForMance characTerisTics V

IN = 3.3V, RT/SYNC = SVIN, unless otherwise noted.

LTC3615 Datasheet(PDF) 6 Page - Linear Technology

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