LTC4065A Ver la hoja de datos (PDF) - Linear Technology
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LTC4065A Datasheet PDF : 16 Pages
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LTC4065/LTC4065A
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VCC = 5V, VBAT = 3.8V, VEN = 0V (LTC4065 only) unless otherwise specified. (Note 2)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
IPROG
PROG Pin Pull-Up Current
VPROG > 1V
3
(LTC4065A)
VMS,PROG PROG Shutdown Threshold Voltage VPROG Rising
(LTC4065A Only)
● 3.7
4
4.3
tSS
ITRKL
VTRKL
VTRHYS
∆VRECHRG
∆VUVCL1
∆VUVCL2
tTIMER
Soft-Start Time
Trickle Charge Current
Trickle Charge Threshold Voltage
Trickle Charge Hysteresis Voltage
Recharge Battery Threshold Voltage
(VCC – VBAT) Undervoltage Current
Limit
Termination Timer
Recharge Time
VBAT = 2V, RPROG = 2k (0.1%)
VBAT Rising
VFLOAT – VRECHRG, 0°C < TA < 85°C
IBAT = 90% Programmed Charge Current
IBAT = 10% Programmed Charge Current
180
35
50
65
● 2.7
2.9
3.05
90
70
100 130
180 220 330
90
125 150
●
3
4.5
6
●
1.5
2.25
3
VACPR
Low-Battery Trickle Charge Time
ACPR Pin Output Low Voltage
(LTC4065A)
VBAT = 2.5V
IACPR = 5mA
● 0.75 1.125 1.5
●
60
105
IACPR
VCHRG
ICHRG
IC/10
ACPR Pin Input Current (LTC4065A)
CHRG Pin Output Low Voltage
CHRG Pin Input Current
End of Charge Indication Current
Level
VCC = 4V, VACPR = 4V, VBAT = 4.5V
ICHRG = 5mA
VBAT = 4.5V, VCHRG = 5V
RPROG = 2k (Note 5)
●
0
1
●
60
105
●
0
1
● 0.085 0.1 0.115
TLIM
Junction Temperature in Constant
115
Temperature Mode
RON
Power FET “ON” Resistance
IBAT = 200mA
450
(Between VCC and BAT)
fBADBAT
Defective Battery Detection CHRG
2
Pulse Frequency
DBADBAT Defective Battery Detection CHRG
80
Pulse Frequency Duty Ratio
UNITS
µA
V
µs
mA
V
mV
mV
mV
mV
Hrs
Hrs
Hrs
mV
µA
mV
µA
mA/mA
°C
mΩ
Hz
%
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC4065/LTC4065A are guaranteed to meet performance
specifications from 0°C to 70°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: Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much higher than
102°C/W.
Note 4: Although the LTC4065 functions properly at 3.75V, full charge
current requires an input voltage greater than the desired final battery
voltage per the ∆VUVCL1 specification.
Note 5: IC/10 is expressed as a fraction of measured full charge current
with indicated PROG resistor.
Note 6: 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.
4065f
3
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