LTC4065-4.4 Linear Technology, LTC4065-4.4 Datasheet - Page 3

• Manufacturer Part Number: LTC4065-4.4
• Description: Standalone 750mA Li-Ion Battery Charge
• Manufacturer: Linear Technology

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ELECTRICAL CHARACTERISTICS
The
V
SYMBOL
t
I
V
V
∆V
∆V
∆V
t
V
I
I
T
R
f
D
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 LTC4065-4.4 are guaranteed to meet performance specifica-
tions 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: Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much higher than
rated.
SS
TRKL
TIMER
CHRG
C/10
BADBAT
LIM
TRKL
TRHYS
CHRG
CC
ON
BADBAT
RECHRG
UVCL1
UVCL2
= 5V, V
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
BAT
PARAMETER
Soft-Start Time
Trickle Charge Current
Trickle Charge Threshold Voltage
Trickle Charge Hysteresis Voltage
Recharge Battery Threshold Voltage
(V
Limit
Termination Timer
Recharge Time
Low-Battery Trickle Charge Time
CHRG Pin Output Low Voltage
CHRG Pin Input Current
End of Charge Indication Current
Level
Junction Temperature in Constant
Temperature Mode
Power FET On-Resistance
(Between V
Defective Battery Detection CHRG
Pulse Frequency
Defective Battery Detection CHRG
Pulse Frequency Duty Ratio
CC
= 3.8V, V
– V
BAT
CC
) Undervoltage Current
EN
and BAT)
= 0V unless otherwise specified. (Note 2)
CONDITIONS
V
V
V
I
I
V
I
V
R
I
BAT
BAT
CHRG
BAT
BAT
BAT
FLOAT
BAT
BAT
PROG
= 90% Programmed Charge Current
= 10% Programmed Charge Current
= 200mA
= 2V, R
Rising
= 2.5V
= 4.5V, V
= 5mA
= 2k (Note 5)
– V
RECHRG
PROG
CHRG
, 0°C < T
= 2k (0.1%)
= 5V
A
Note 4: Although the LTC4065-4.4 functions properly at 3.75V, full charge
current requires an input voltage greater than the desired final battery
voltage per the ∆V
Note 5: I
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.
< 85°C
C/10
is expressed as a fraction of measured full charge current
UVCL1
specification.
●
●
●
●
●
●
●
0.085
0.75
MIN
180
2.7
1.5
35
70
90
3
LTC4065-4.4
1.125
2.25
TYP
180
100
220
125
115
450
2.9
4.5
0.1
50
90
60
75
0
2
A
= 25°C.
0.115
MAX
3.05
130
330
150
105
1.5
65
6
3
1
mA/mA
UNITS
406544f
3
mΩ
Hrs
Hrs
Hrs
mA
mV
mV
mV
mV
mV
µA
µs
°C
Hz
%
V