Datasheet

LTC4053-4.2
3
4053fa
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
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
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
PROG
PROG Pin Voltage R
PROG
= 3k, I
PROG
= 500µA 1.5 V
I
CHRG
CHRG Pin Weak Pulldown Current V
CHRG
= 1V 15 30 50 µA
V
CHRG
CHRG Pin Output Low Voltage I
CHRG
= 5mA 0.35 0.6 V
V
ACPR
ACPR Pin Output Low Voltage I
ACPR
= 5mA 0.35 0.6 V
V
FAULT
FAULT Pin Output Low Voltage I
FAULT
= 5mA 0.35 0.6 V
I
C/10
End of Charge Indication Current Level R
PROG
= 3k 44 50 56 mA
t
TIMER
TIMER Accuracy C
TIMER
= 0.1µF10%
V
RECHRG
Recharge Battery Voltage Threshold Battery Voltage Falling 4.035 V
V
NTC-HOT
NTC Pin Hot Threshold Voltage V
NTC
Falling 2.5 V
V
HOT-HYS
NTC Pin Hot Hysteresis Voltage 80 mV
V
NTC-COLD
NTC Pin Cold Threshold Voltage V
NTC
Rising 4.375 V
V
COLD-HYS
NTC Pin Cold Hystersis Voltage 80 mV
V
NTC-DIS
NTC Pin Disable Threshold Voltage V
NTC
Rising 100 mV
V
DIS-HYS
NTC Pin Disable Hystersis Voltage 10 mV
T
LIM
Junction Temperature in 105 °C
Constant-Temperature Mode
R
ON
Power MOSFET “ON” Resistance 375 mΩ
temperature range are assured by design, characterization and correlation
with statistical process controls.
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).
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