LTC4053-4.2_15 Datasheet, PDF (3/16 Pages) Linear Technology – USB Compatible Lithium-Ion Battery Charger with Thermal Regulation

LTC4053-4.2
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_CC = 5V
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_PROG
I_CHRG
V_CHRG
V_ACPR
V_FAULT
I_C/10
t_TIMER
V_RECHRG
V_NTC-HOT
V_HOT-HYS
V_NTC-COLD
V_COLD-HYS
V_NTC-DIS
V_DIS-HYS
T_LIM
PROG Pin Voltage
CHRG Pin Weak Pulldown Current
CHRG Pin Output Low Voltage
ACPR Pin Output Low Voltage
FAULT Pin Output Low Voltage
End of Charge Indication Current Level
TIMER Accuracy
Recharge Battery Voltage Threshold
NTC Pin Hot Threshold Voltage
NTC Pin Hot Hysteresis Voltage
NTC Pin Cold Threshold Voltage
NTC Pin Cold Hystersis Voltage
NTC Pin Disable Threshold Voltage
NTC Pin Disable Hystersis Voltage
Junction Temperature in
Constant-Temperature Mode
R_PROG = 3k, I_PROG = 500µA
V_CHRG = 1V
I_CHRG = 5mA
I_ACPR = 5mA
I_FAULT = 5mA
R_PROG = 3k
C_TIMER = 0.1µF
Battery Voltage Falling
V_NTC Falling
V_NTC Rising
V_NTC Rising
1.5
V
15
30
50
µA
0.35
0.6
V
0.35
0.6
V
0.35
0.6
V
44
50
56
mA
10
%
4.035
V
2.5
V
80
mV
4.375
V
80
mV
100
mV
10
mV
105
°C
R_ON
Power MOSFET “ON” Resistance
375
mΩ
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 2: The Absolute Maximum BAT Current Rating of 1.3A is guaranteed
by design and current density calculations. The Absolute Maximum PROG
Current Rating is guaranteed to be 1/1000 of BAT current rating by design.
Note 3: The LTC4053E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
Note 4: Failure to solder the exposed backside of the package to the PC
board will result in a thermal resistance much higher than 40°C/W.
Note 5: Supply current includes PROG pin current (approximately 50µA)
but does not include any current delivered to the battery through the BAT
pin (approximately 50mA).
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