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LT3510

3510fe

TYPICAL PERFORMANCE CHARACTERISTICS

ELECTRICAL CHARACTERISTICS

LT3510IFE is guaranteed and tested over the full –40°C to 125°C operating

junction temperature range.

Note 3: Minimum input voltage is deﬁned as the voltage where internal

bias lines are regulated so that the reference voltage and oscillator remain

constant. Actual minimum input voltage to maintain a regulated output

will depend upon output voltage and load current. See Applications

Information.

Note 4: An internal power-on reset (POR) latch is set on the positive

transition of the SHDN pin through its threshold. The output of the latch

activates current sources on each SS pin which typically sink 1.5mA,

discharging the SS capacitor. The latch is reset when both SS pins are

driven below the soft-start POR threshold or the SHDN pin is taken below

its threshold.

Note 5: To enhance dropout operation, the output switch will be turned off

for the minimum off time only when the voltage across the boost capacitor

drops below the minimum boost for 100% duty cycle threshold.

Note 6: The IND to VOUT maximum current is deﬁned as the value of

current ﬂowing from the IND pin to the VOUT pin which resets the switch

latch when the VC pin is at its high clamp.

Note 7: This is the minimum voltage across the boost capacitor needed to

guarantee full saturation of the internal power switch.

Note 8: 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.

Feedback Voltage vs Temperature

RT/SYNC Voltage vs Temperature

Shutdown Threshold and Minimum

Input Voltage vs Temperature

Shutdown Quiescent Current

vs Temperature

Soft-Start Source Current

vs Temperature

TEMPERATURE (°C)

–50

0.806

0.811

0.816

3510 G02

0.801

0.796

–25

100

125

0.791

0.786

TEMPERATURE (°C)

–50

–25

0.95

0.99

1.05

3510 G03

0.97

1.03

1.01

100

125

TEMPERATURE (°C)

–50

2.0

2.5

3.0

3510 G04

1.5

1.0

–25

100

125

0.5

MINIMUM INPUT

VOLTAGE

SHUTDOWN

THRESHOLD

VOLTAGE

TEMPERATURE (°C)

–50

3510 G05

–25

100

125

VVIN1

VVIN2

TEMPERATURE (°C)

–50

2.0

2.2

2.6

2.8

3.0

4.0

3.4

3510 G07

2.4

3.6

3.8

3.2

–25

100

125

IND to VOUT Maximum Current vs

Temperature

TEMPERATURE (°C)

–50

2.0

2.2

2.6

2.8

3.0

4.0

3.4

–10

3510 G30

2.4

3.6

3.8

3.2

–30

VOUT = 5V

VOUT = 0V

90 110

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