LTC4095EDC Просмотр технического описания (PDF) - Linear Technology
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LTC4095EDC Datasheet PDF : 16 Pages
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LTC4095
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
tRECHRG
tTERM
tBADBAT
hC/10
tC/10
RON_CHG
TLIM
NTC
VCOLD
VHOT
VDIS
PARAMETER
Recharge Comparator Filter Time
Safety Timer Termination Period
Bad-Battery Termination Time
End of Charge Indication Current Level
End of Charge Comparator Filter Time
Battery Charger Power FET On-
Resistance (Between IN and BAT)
Junction Temperature in Constant
Temperature
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Threshold Voltage
INTC
NTC Leakage Current
Logic (HPWR, SUSP, ⎯C⎯H⎯R⎯G)
VIL
VIH
RDN
⎯C⎯H⎯R⎯G
Input Low Voltage
Input High Voltage
Logic Pin Pull-Down Resistance
⎯C⎯H⎯R⎯G Pin Output Low Voltage
I⎯C⎯H⎯R⎯G
⎯C⎯H⎯R⎯G Pin Input Current
CONDITIONS
BAT Falling
BAT = VFLOAT
BAT < VTRKL
(Note 5)
IBAT Falling
IBAT = 200mA
Rising NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
NTC = IN = 5V
HPWR, SUSP Pins
HPWR, SUSP Pins
HPWR, SUSP Pins
I⎯C⎯H⎯R⎯G = 5mA
BAT = 4.5V, ⎯C⎯H⎯R⎯G = 5V
MIN
TYP
MAX
UNITS
1.7
ms
3.5
4
4.5
Hour
0.4375
0.5
0.5625
Hour
0.09
0.1
0.11
mA/mA
2.2
ms
500
mΩ
115
°C
0.750 • IN 0.765 • IN 0.780 • IN
V
0.016 • IN
V
0.334 • IN 0.349 • IN 0.364 • IN
V
0.016 • IN
V
● 0.007 • IN 0.017 • IN 0.027 • IN
mV
0.010 • IN
mV
–1
0
1
µA
0.4
V
1.2
V
● 1.9
3.6
6.3
MΩ
100
250
mV
0
1
µA
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.
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.
4095fa
3
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