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LTC3408

3408f

TYPICAL PERFOR A CE CHARACTERISTICS

Efficiency vs Output Current

Oscillator Frequency

vs Temperature

(From Figure 1)

ELECTRICAL CHARACTERISTICS

Efficiency vs VOUT

Note 4: When VREF > 1.2V and VREF x3 > VIN, the P-channel FET will be on

in parallel with the bypass PFET reducing the overall RDS(ON).

Note 5: This IC includes overtemperature protection that is intended to

protect the device during momentary overload conditions. Junction

temperature will exceed 125

°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may impair device reliability.

VOUT (V)

110

100

3408 G02

TA = 25°C

VIN = 3.6V

600mA

100mA

OUTPUT CURRENT (mA)

100

0.1

100

1000

3408 G03

VIN = 3.6V

VIN = 4.2V

TA = 25°C

VOUT = 1.2V

OUTPUT CURRENT (mA)

100

0.1

100

1000

3408 G04

VIN = 3.6V

VIN = 4.2V

TA = 25°C

VOUT = 1.5V

OUTPUT CURRENT (mA)

100

0.1

100

1000

3408 G05

VIN = 3.6V

VIN = 4.2V

TA = 25°C

VOUT = 2.5V

TEMPERATURE (

°C)

–50

1.70

1.65

1.60

1.55

1.50

1.45

1.40

1.35

1.30

–25

100

125

VIN = 3.6V

3408 G06

Oscillator Frequency

vs Supply Voltage

SUPPLY VOLTAGE (V)

1.8

1.7

1.6

1.5

1.4

1.3

1.2

3408 G07

TA = 25°C

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