LTC4095

3

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.

otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Recharge Comparator Filter Time

BAT Falling

1.7

ms

Safety Timer Termination Period

3.5

4

4.5

Hour

Bad-Battery Termination Time

0.4375

0.5

0.5625

Hour

End of Charge Indication Current Level

(Note 5)

0.09

0.1

0.11

mA/mA

End of Charge Comparator Filter Time

2.2

ms

Battery Charger Power FET On-

Resistance (Between IN and BAT)

500

mΩ

Junction Temperature in Constant

Temperature

115

°C

NTC

Cold Temperature Fault Threshold

Voltage

Rising NTC Voltage

Hysteresis

0.750 • IN 0.765 • IN

0.016 • IN

0.780 • IN

V

V

Hot Temperature Fault Threshold

Voltage

Falling NTC Voltage

Hysteresis

0.334 • IN 0.349 • IN

0.016 • IN

0.364 • IN

V

V

NTC Disable Threshold Voltage

Falling NTC Voltage

Hysteresis

●

0.007 • IN 0.017 • IN

0.010 • IN

0.027 • IN

mV

mV

NTC Leakage Current

NTC = IN = 5V

–1

0

1

µA

Logic (HPWR, SUSP, ⎯C⎯H⎯R⎯G)

Input Low Voltage

HPWR, SUSP Pins

0.4

V

Input High Voltage

HPWR, SUSP Pins

1.2

V

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

100

250

mV

⎯C⎯H⎯R⎯G Pin Input Current

BAT = 4.5V, ⎯C⎯H⎯R⎯G = 5V

0

1

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

charge current.

with indicated PROG resistor.