LTC4054L-4.2 Datasheet, PDF (3/16 Pages) Linear Technology – 150mA Standalone Linear Li-Ion Battery Charger in ThinSOT

LTC4054L-4.2
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_CC = 5V, unless otherwise noted.
SYMBOL
T_LIM
R_ON
t_SS
t_RECHARGE
t_TERM
I_PROG
PARAMETER
Junction Temperature in Constant
Temperature Mode
Power FET “ON” Resistance
(Between V_CC and BAT)
Soft-Start Time
Recharge Comparator Filter Time
Termination Comparator Filter Time
PROG Pin Pull-Up Current
CONDITIONS
I_BAT = 0 to I_BAT =150V/R_PROG
V_BAT High to Low
I_BAT Drops Below I_CHG/10
MIN TYP MAX
120
1.5
100
0.75
2
4.5
400 1000 2500
1.5
3
5
UNITS
°C
Ω
µs
ms
µs
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: The LTC4054LE-4.2 is guaranteed to meet performance specifica-
tions 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: See Thermal Considerations.
Note 4: Supply current includes PROG pin current (≈1mA) but does not
include any current delivered to the battery through the BAT pin.
Note 5: I_TERM is expressed as a fraction of measured full charge current
with indicated PROG resistor.
TYPICAL PERFOR A CE CHARACTERISTICS
PROG Pin Voltage vs Supply
Voltage (Constant Current Mode)
1.0100
1.0075
1.0050
V_CC = 5V
V_BAT = 4V
T_A = 25°C
1.0025
R_PROG = 1k
1.0000
0.9975
R_PROG = 15k
0.9950
0.9925
0.9900
4 4.5 5 5.5 6 6.5 7
V_CC (V)
4054L G01
PROG Pin Voltage vs Temperature
(Constant Current Mode)
1.0100
1.0075
1.0050
V_CC = 5V
V_BAT = 4V
R_PROG = 1k
1.0025
1.0000
0.9975
0.9950
0.9925
0.9900
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
4054L G02
Charge Current
vs PROG Pin Voltage
180
V_CC = 5V
R_PROG = 1k
150 T_A = 25°C
120
90
60
30
0
0 0.25 0.5 0.75
V_PROG (V)
1
1.25
4054L G03
4054l42f
3