LTC4067 datasheet(4/20 Pages) LINER

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LTC4067

4067f

The ● denotes the speciﬁcations which apply over the full operating

temperature range (Note 3), otherwise speciﬁcations are at TA = 25°C. Note 2 unless otherwise noted, VIN = 5V, VBAT = 3.7V,

VILIM0 = 0V, VILIM1 = 0V, RPROG = 2k, RCLPROG = 2k, VOVI = 0V, VNTC = VIN/2.

ELECTRICAL CHARACTERISTICS

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: Current into a pin is positive and current out of a pin is negative.

All Voltages referenced to GND

Note 3: The LTC4067 is guaranteed to meet performance speciﬁcations

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

operating temperature range are assured by design, characterization and

correlation with statistical process controls.

Note 4: Speciﬁcation is guaranteed by design and not 100% tested in

production.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

NTC

INTC

NTC Input Leakage Current

VNTC = 2.5V

±1

μA

VCOLD

Cold Temperature Fault Threshold

Voltage

Rising Threshold

Hysteresis

0.725 • VIN 0.733 • VIN

0.02 • VIN

0.741 • VIN

VHOT

Hot Temperature Fault Threshold

Voltage

Falling Threshold

Hysteresis

0.287 • VIN 0.29 • VIN

0.02 • VIN

0.293 • VIN

VDIS

NTC Disable Voltage

NTC Input voltage to GND (Falling)

Hysteresis

●

100

120

Logic

FMOD

Serrated Fault Pulse Modulation

Frequency at ⎯C⎯H⎯R⎯G Pin

(VDIS < VNTC < VHOT) or (VNTC > VCOLD)

VBAT < 2.9V for Longer Than Trickle Charge Time

1.5

FPW

Serrated Fault Pulse Width at ⎯C⎯H⎯R⎯G

(VDIS < VNTC < VHOT) or (VNTC > VCOLD)

VBAT < 2.9V for Longer Than Trickle Charge Time

1.33

2.62

μs

FTF

Serrated Fault Pulse Frequency at

⎯C⎯H⎯R⎯G Pin

(VDIS < VNTC < VHOT) or (VNTC > VCOLD) or

VBAT < 2.9V for Longer Than Trickle Charge Time

kHz

VOL

Output Low Voltage (⎯C⎯H⎯R⎯G)

ISINK = 5mA

●

1.5

VIH

Enable Input High Voltage

ILIM0, ILIM1 Pin Low to High

●

1.2

VlL

Enable Input Low Voltage

ILIM0, ILIM1 Pin High to Low

●

0.4

IPULLDN

Logic Input Pull Down Current

ILIM0, ILIM1

μA

VOVTH

Overvoltage Protection Threshold

(OVI Pin)

VOVI Rising Threshold

Hysteresis

5.8

250

6.2

VPROG,SD

Shutdown Threshold

VCC – VPROG Rising (Note 6)

Hysteresis

1.4

IPROG,PULLUP PROG Pin Shutdown Sense Current VPROG = 1V

3.5

μA

Note 5: This IC includes over-temperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature exceeds 125°C when over-temperature protection is active.

Continuous operation above the speciﬁed maximum operating junction

temperature may result in device degradation or failure.

Note 6: VCC is the greater of VIN, VOUT or VBAT.

Note 7: Accuracy of programmed current may degrade for currents greater

than 1A.

Note 8: CLPROG soft-start scales with inverse of CLPROG resistor. If

RCLPROG = 2k, then ISS = 0.6mA/μs.

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