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LTC3426

3426fa

TYPICAL PERFOR A CE CHARACTERISTICS

Oscillator Frequency

vs Temperature

TEMPERATURE (

°C)

–50

1.0

1.1

1.2

1.3

1.40

–30

–10

3426 G01

VIN (V)

1.8

2.2

2.6

3.4

LT1108 • TPC12

3.8

100

4.2

FIGURE 1 CIRCUIT

TA = 25°C

ILOAD = 150mA

VOUT = 5V

COUT = 22µF

L = 2.2

µH

VIN (V)

1.8

0.3

0.5

0.7

0.9

1.1

1.3

2.2

2.6

3.4

3426 G03

3.8

4.2

FIGURE 1 CIRCUIT

TA = 25°C

VOUT = 5V

COUT = 22µF

L = 2.2

µH

Efficiency vs VIN

IOUT(MAX) vs VIN

RDS(ON) vs Temperature

TEMPERATURE (

°C)

–50

0.05

0.07

0.09

0.11

–25

3426 G04

0.13

0.15

0.06

0.08

0.10

0.12

0.14

100

VOUT = 2.5V

VOUT = 5V

VOUT = 3.3V

TEMPERATURE (

°C)

–50

1.19

1.20

1.21

1.22

1.23

1.25

–25

025

3426 G05

100

1.24

FB Pin Voltage

VOUT

500mV/DIV

2V/DIV

100ns/DIV

VIN = 1.8V

VOUT = 3.3V

COUT = 22µF

L = 2.5

µH

3426 G06

200mA/DIV

Switching Waveforms

SW Pin Antiringing Operation

VOUT Transient Response

1V/DIV

100ns/DIV

VIN = 1.8V

VOUT = 3.3V

3426 G07

50mA/DIV

µs/DIV

VIN = 1.8V

VOUT = 3.3V

COUT = 22µF

L = 2.5

µH

3426 G08

500mA/DIV

IOUT

200mA/DIV

VOUT

500mV/DIV

250mA

500mA

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