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LTC4054-4.2 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4054-4.2
Description  Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4054-4.2 Datasheet(HTML) 3 Page - Linear Technology

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LTC4054-4.2/LTC4054X-4.2
405442xf
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: The LTC4054E-4.2 and the LTC4054XE-4.2 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: See Thermal Considerations.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TLIM
Junction Temperature in Constant
120
°C
Temperature Mode
RON
Power FET “ON” Resistance
600
m
(Between VCC and BAT)
tSS
Soft-Start Time
IBAT = 0 to IBAT =1000V/RPROG
100
µs
tRECHARGE
Recharge Comparator Filter Time
VBAT High to Low
0.75
2
4.5
ms
tTERM
Termination Comparator Filter Time
IBAT Falling Below ICHG/10
400
1000
2500
µs
IPROG
PROG Pin Pull-Up Current
3
µA
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 4: Supply current includes PROG pin current (approximately 100
µA)
but does not include any current delivered to the battery through the BAT
pin (approximately 100mA).
Note 5: This parameter is not applicable to the LTC4054X.
Note 6: ITERM 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)
PROG Pin Voltage vs
Temperature
Charge Current vs
PROG Pin Voltage
VCC (V)
4.0
1.015
1.010
1.005
1.000
0.995
0.990
0.985
4.5
5.0
5.5
6.0
4054 G01
6.5
7.0
TEMPERATURE (
°C)
–50
–25
0
50
25
75
100
4054 G02
1.0100
1.0075
1.0050
1.0025
1.0000
0.9975
0.9950
0.9925
0.9900
VPROG (V)
0
600
500
400
300
200
100
0
0.25
0.50
0.75
1.00
4054 G03
1.25
VCC = 5V
VBAT = 4V
TA = 25°C
RPROG = 10k
VCC = 5V
VBAT = 4V
RPROG = 10k
VCC = 5V
TA = 25°C
RPROG = 2k


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