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LTC3412

3412fb

INPUT VOLTAGE (V)

2.55

3.05

3.55

4.05

4.55

5.05

3412 G04

VOUT = 2.5V

1MHz

Burst Mode OPERATION

LOAD = 100mA

LOAD = 1A

LOAD = 2.5A

FREQUENCY (kHz)

300

800 1300 1800 2300 2800 3300 3800

3412 G05

VIN = 3.3V

VOUT = 2.5V

LOAD = 1A

Burst Mode OPERATION

1μH

0.47μH

2.2μH

LOAD CURRENT (A)

0.5

1.5

2.5

0.02

0.00

–0.02

–0.04

–0.06

–0.08

–0.10

–0.12

–0.14

–0.16

–0.18

3412 G06

VIN = 3.3V

VOUT = 2.5V

4μs/DIV

3412 G07

20μs/DIV

3412 G08

20μs/DIV

3412 G09

Efficiency vs Frequency

Efficiency vs Input Voltage

Load Regulation

Load Step Transient Forced

Continuous

Burst Mode Operation

Load Step Transient Burst Mode

Operation

VIN = 3.3V, VOUT = 2.5V

LOAD = 50mA

VIN = 3.3V, VOUT = 2.5V

LOAD STEP = NO LOAD TO 2.5A

VIN = 3.3V, VOUT = 2.5V

LOAD STEP = 50mA TO 2.5A

TYPICAL PERFOR A CE CHARACTERISTICS

TEMPERATURE (°C)

–45 –25 –5

95 115 120

3412 G11

0.7960

0.7955

0.7950

0.7945

0.7940

0.7935

0.7930

0.7925

0.7920

VIN = 3.3V

INPUT VOLTAGE (V)

2.5

3.5

4.5

3412 G12

120

100

PFET ON-RESISTANCE

NFET ON-RESISTANCE

Start-Up, Burst Mode Operation

Reference Voltage

vs Temperature

Switch On-Resistance

vs Input Voltage

1ms/DIV

3412 G10

VIN = 3.3V, VOUT = 2.5V

LOAD = 1Ω

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