LTC3604 datasheet(3/24 Pages) LINER

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LTC3604

3604f

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VVIN

Input Supply Range

3.6

Input DC Supply Current

Forced Continuous Operation

Sleep Current

Shutdown

MODE = 0V

MODE = INTVCC, VFB > 0.6V

RUN = 0V

700

300

1000

500

μA

VFB

Feedback Reference Voltage

0.594

0.600

0.606

ΔVLINEREG Reference Voltage Line Regulation

VVIN = 3.6V to 15V

0.01

%/V

ΔVLOADREG Output Voltage Load Regulation

ITH = 0.6V to 1.6V

0.1

IFB

Feedback Pin Input Current

VFB = 0.6V

±30

gm(EA)

Error Ampliﬁer Transconductance

ITH = 1.2V

2.0

tON(MIN)

Minimum On-Time

VON = 1V, VIN = 4V

tOFF(MIN)

Minimum Off-Time

VIN = 6V

ILIM

Valley Switch Current Limit

2.6

3.4

4.3

fOSC

Oscillator Frequency

VRT = INTVCC

RRT = 160k

RRT = 80k

1.4

1.7

3.4

2.6

2.3

4.6

MHz

RDS(ON)

Top Switch On-Resistance

130

mΩ

Bottom Switch On-Resistance

100

mΩ

VVIN(OV)

VIN Overvoltage Lockout Threshold

VIN Rising

VIN Falling

16.8

15.8

17.5

16.5

VINTVCC

INTVCC Voltage

3.6V < VIN < 15V

3.13

3.3

3.45

ΔINTVCC

INTVCC Load Regulation (Note 4)

IINTVCC = 0mA to 20mA

0.6

VUVLO

INTVCC Undervoltage Lockout

Threshold

INTVCC Rising, VIN = INTVCC

INTVCC Falling, VIN = INTVCC

2.75

2.45

2.9

VRUN

RUN Threshold

RUN Rising

RUN Falling

1.21

0.97

1.25

1.0

1.29

1.03

IRUN(LKG)

RUN Leakage Current

VVIN = 15V

±3

μA

VFB_GB

PGOOD Good-to-Bad Threshold

FB Rising

FB Falling

–8

–10

VFB_BG

PGOOD Bad-to-Good Threshold

FB Rising

FB Falling

–3

–5

tPGOOD

Power Good Filter Time

μs

RPGOOD

PGOOD Pull-Down Resistance

10mA Load

ISW(LKG)

Switch Leakage Current

VRUN = 0V

0.01

μA

tSS

Internal Soft-Start Time

VFB from 10% to 90% Full Scale

400

700

μs

VFB_TRACK

TRACK Pin

TRACK = 0.3V

0.28

0.3

0.315

ITRACK

TRACK Pull-Up Current

1.4

μA

VMODE/SYNC MODE Threshold Voltage

MODE VIH

MODE VIL

1.0

0.4

SYNC Threshold Voltage

SYNC VIH

0.95

IMODE

MODE Input Current

MODE = 0V

MODE = INTVCC

–1.5

1.5

μA

The

l denotes the speciﬁcations which apply over the full operating

junction temperature range, otherwise speciﬁcations are at TJ = 25°C. VVIN = 12V, unless otherwise speciﬁed.

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 LTC3604E is guaranteed to meet performance speciﬁcations

from 0°C to 85°C. Speciﬁcations over the –40°C to 125°C operating

junction temperature range are assured by design, characterization, and

correlation with statistical process controls. The LTC3604I is guaranteed

over the full –40°C to 125°C operating junction temperature range. The

maximum ambient temperature is determined by speciﬁc operating

conditions in conjunction with board layout, the rated package thermal

resistance and other environmental factors.

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