LTC3419 datasheet(3/16 Pages) LINER

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LTC3419

3419f

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: Guaranteed by long term current density limitations.

Note 3: The LTC3419E and LTC3419E-1 are guaranteed to meet speciﬁed

performance from 0°C to 85°C. Speciﬁcations over the –40°C and 85°C

operating temperature range are assured by design, characterization and

correlation with statistical process controls.

Note 4: Dynamic supply current is higher due to the internal gate charge

being delivered at the switching frequency.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

ΔVLOAD REG

Output Voltage Load Regulation

ILOAD = 0mA to 600mA (Note 7)

0.5

Input DC Supply Current

Active Mode (Note 4)

Sleep Mode

Shutdown

VFB1 = VFB2 = 0.95 × VFBREG

VFB1 = VFB2 = 1.05 × VFBREG, VIN = 5.5V

RUN1 = RUN2 = 0V, VIN = 5.5V

500

0.1

700

μA

fOSC

Oscillator Frequency

VFB = VFBREG

●

1.8

2.25

2.7

MHz

ILIM

Peak Switch Current Limit

Channel 1 (600mA)

Channel 2 (600mA)

VIN = 3V, VFB < VFBREG, Duty Cycle < 35%

900

1200

RDS(ON)

Channel 1 (Note 5)

Top Switch On-Resistance

Bottom Switch On-Resistance

Channel 2 (Note 5)

Top Switch On-Resistance

Bottom Switch On-Resistance

VIN = 3.6V, ISW = 100mA

0.4

0.6

ISW(LKG)

Switch Leakage Current

VIN = 5V, VRUN = 0V

0.01

μA

tSOFTSTART

Soft-Start Time

VFB from 10% to 90% Full Scale

0.1

0.95

1.3

VRUN

RUN Threshold High

●

0.4

1.2

IRUN

RUN Leakage Current

●

0.01

μA

VMODE

MODE Threshold High

●

0.4

1.2

IMODE

MODE Leakage Current

●

0.01

μA

VBURST

Output Ripple in Burst Mode Operation

VOUT = 1.5V, COUT = 10μF

mVP-P

ELECTRICAL CHARACTERISTICS The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C, VIN = 3.6V, unless otherwise noted.

Note 5: The DFN switch on-resistance is guaranteed by correlation to

wafer level measurements.

Note 6: 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.

Note 7: The converter is tested in a proprietary test mode that connects

the output of the error ampliﬁer to the SW pin, which is connected to an

external servo loop.

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