LTC3400 datasheet(3/12 Pages) LINER

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LTC3400/LTC3400B

3400fa

TYPICAL PERFOR A CE CHARACTERISTICS

Output Load Burst Mode Threshold

vs VIN

VIN (V)

0.9

1.5

2.1

2.7

3.3

3400 G01

3.9

4.5

VOUT = 3.3V

VOUT = 5V

L = 4.7

µH

TA = 25°C

TEMPERATURE (

°C)

–60

3.24

3.26

3.28

3.30

3.32

3.36

–30

030

3400 G02

120

3.34

FIGURE 1 CIRCUIT

IO = 10mA

IOUT (mA) CURRENT SOURCE LOAD

0.1

0.8

1.2

1.3

1.4

100

3400 G03

1.1

1.0

0.9

TA = 25°C

VOUT vs Temperature

Minimum Start-Up Voltage

vs Load Current

No Load Battery Current vs VBATT

BATTERY VOLTAGE (V)

1.2

100

1000

1.8

3400 G04

0.9

3.0

1.5

2.1

2.4

2.7

VOUT = 3.3V

TA = 25°C

SW Pin Fixed Frequency,

Continuous Inductor Current

Operation

TEMPERATURE (

°C)

–50

0.99

1.00

1.01

3400 G05

0.98

0.97

–30

–10

0.96

0.95

SW Pin Antiringing Operation

Fixed Frequency and Burst Mode

Operation

VOUT Transient Response

Normalized Oscillator Frequency

vs Temperature

VSW

1V/DIV

VIN = 1.3V

100ns/DIV

3400 G06

VOUT = 3.3V

IOUT = 10mA

L = 6.8

µH

COUT = 4.7µF

VSW

1V/DIV

VIN = 1.3V

100ns/DIV

3400 G07

VOUT = 3.3V

IOUT = 50mA

L = 6.8

µH

COUT = 4.7µF

VOUT(AC)

100mV/DIV

60mA

VIN = 1.3V

10ms/DIV

3400 G08

VOUT = 3.3V

IOUT = 60mA TO 10µA

L = 6.8

µH

COUT = 4.7µF

µA

IOUT

VOUT(AC)

100mV/DIV

100mA

VIN = 1.3V

100

µs/DIV

3400 G09

VOUT = 3.3V

IOUT = 40mA TO 100mA

L = 6.8

µH

COUT = 4.7µF

40mA

IOUT

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