LTC3413 datasheet(3/16 Pages) LINER

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LTC3413

3413fc

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

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 3.3V, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fOSC

Switching Frequency

Switching Frequency Range

ROSC = 309k

(Note 6)

0.88

0.30

1.00

1.12

2.00

MHz

RPFET

RDS(ON) of P-Channel FET

ISW = 300mA

110

mΩ

RNFET

RDS(ON) of N-Channel FET

ISW = 300mA

mΩ

ILIMIT

Peak Current Limit

3.8

5.4

VUVLO

Undervoltage Lockout Threshold

1.75

2.25

ILSW

SW Leakage Current

VRUN = 0V, VIN = 5.5V (Note 7)

0.1

μA

VRUN

RUN Threshold

0.5

0.65

0.8

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: The LTC3413E is guaranteed to meet performance speciﬁcations

from 0°C to 70°C. Speciﬁcations over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls. LTC3413I is guaranteed to meet speciﬁed

performance from –40°C to 85°C.

Note 3: The LTC3413 is tested in a feedback loop that adjusts VFB to

achieve a speciﬁed error ampliﬁer output voltage (ITH).

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

being delivered at the switching frequency.

TYPICAL PERFORMANCE CHARACTERISTICS

Efﬁciency vs Load Current

Efﬁciency vs Input Voltage

Load Regulation

LOAD CURRENT (A)

0.01

0.1

3413 G01

100

VIN = 2.5V

VOUT = 1.25V

TA = 25°C

VIN = 3.3V

INPUT VOLTAGE (V)

2.5

4.0

5.0

3413 G02

3.0

3.5

4.5

100

5.5

LOAD = 1A

LOAD = 3A

LOAD = 100mA

VOUT = 1.25V

TA = 25°C

LOAD CURRENT (A)

–0.30

–0.25

–0.20

–0.15

–0.10

0.5

1.0

1.5

2.0

3413 G03

2.5

3.0

–0.05

TA = 25°C

Note 5: TJ is calculated from the ambient temperature TA and power

dissipation PD as follows: LTC3413E: TJ = TA + (PD • 38°C/W)

Note 6: 2MHz operation is guaranteed by design and not production tested.

Note 7: Shutdown current and SW leakage current are only tested during

wafer sort.

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.

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