LTC4095 datasheet(3/16 Pages) LINER

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LTC4095

4095fa

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 LTC4095 is guaranteed to meet performance speciﬁcations

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

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 3: 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.

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

temperature range, otherwise speciﬁcations are at TA = 25°C. IN = HPWR = 5V, BAT = 3.8V, NTC = SUSP = 0V, RPROG = 1.74k unless

otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

tRECHRG

Recharge Comparator Filter Time

BAT Falling

1.7

tTERM

Safety Timer Termination Period

BAT = VFLOAT

3.5

4.5

Hour

tBADBAT

Bad-Battery Termination Time

BAT < VTRKL

0.4375

0.5

0.5625

Hour

hC/10

End of Charge Indication Current Level

(Note 5)

0.09

0.1

0.11

mA/mA

tC/10

End of Charge Comparator Filter Time

IBAT Falling

2.2

RON_CHG

Battery Charger Power FET On-

Resistance (Between IN and BAT)

IBAT = 200mA

500

mΩ

TLIM

Junction Temperature in Constant

Temperature

115

°C

NTC

VCOLD

Cold Temperature Fault Threshold

Voltage

Rising NTC Voltage

Hysteresis

0.750 • IN 0.765 • IN

0.016 • IN

0.780 • IN

VHOT

Hot Temperature Fault Threshold

Voltage

Falling NTC Voltage

Hysteresis

0.334 • IN 0.349 • IN

0.016 • IN

0.364 • IN

VDIS

NTC Disable Threshold Voltage

Falling NTC Voltage

Hysteresis

●

0.007 • IN 0.017 • IN

0.010 • IN

0.027 • IN

INTC

NTC Leakage Current

NTC = IN = 5V

–1

µA

Logic (HPWR, SUSP, ⎯C⎯H⎯R⎯G)

VIL

Input Low Voltage

HPWR, SUSP Pins

0.4

VIH

Input High Voltage

HPWR, SUSP Pins

1.2

RDN

Logic Pin Pull-Down Resistance

HPWR, SUSP Pins

●

1.9

3.6

6.3

MΩ

⎯C⎯H⎯R⎯G

⎯C⎯H⎯R⎯G Pin Output Low Voltage

I⎯C⎯H⎯R⎯G = 5mA

100

250

I⎯C⎯H⎯R⎯G

⎯C⎯H⎯R⎯G Pin Input Current

BAT = 4.5V, ⎯C⎯H⎯R⎯G = 5V

µA

Note 4: IN supply current does not include current through the PROG pin

or any current delivered to the battery through the BAT pin. Total input

current is equal to this speciﬁcation plus 1.00125 • IBAT where IBAT is the

charge current.

Note 5: hC/10 is expressed as a fraction of measured full charge current

with indicated PROG resistor.

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