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LTC4054LES5-4.2#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC4054L-4.2
1
4054l42fa
Typical applicaTion
FeaTures DescripTion
150mA Standalone Linear
Li-Ion Battery Charger in ThinSOT
The LTC
®
4054L is a complete, constant-current/constant-
voltage linear charger for single cell lithium-ion batteries.
Its small size and ability to regulate low charge currents
make the LTC4054L especially well-suited for portable ap-
plications using low capacity rechargeable lithium-ion coin
cells. Furthermore, the LTC4054L is specifically designed
to work within USB power specifications.
No external sense resistor is needed, and no blocking
diode is required due to the internal MOSFET architecture.
Thermal feedback regulates the charge current to eliminate
thermal overdesign. The charge voltage is fixed at 4.2V, and
the charge current can be programmed externally with a
single resistor. The LTC4054L automatically terminates a
charge cycle when the charge current drops to 1/10th the
programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is
removed, the LTC4054L automatically enters a low current
state, dropping the battery drain current to less than 2µA.
The LTC4054L can be put into shutdown mode, reducing
the supply current to 25µA.
Other features include charge current monitor, undervoltage
lockout, automatic recharge and a status pin to indicate
charge termination and the presence of an input voltage.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. *Protected by U.S. Patents including 6,522,118.
applicaTions
n
Programmable Charge Current Range:
10mA to 150mA
n
No External MOSFET, Sense Resistor or Blocking
Diode Required
n
Complete Linear Charger in ThinSOT™ Package for
Single Cell/Coin Cell Lithium-Ion Batteries
n
Constant-Current/Constant-Voltage Operation with
Thermal Regulation* to Maximize Charge Rate
without Risk of Overheating
n
Charges Single Cell Li-Ion Batteries Directly from
USB Port
n
Preset 4.2V Charge Voltage with ±1% Accuracy
n
Charge Current Monitor Output for Gas Gauging*
n
Automatic Recharge
n
Charge Status Output Pin
n
C/10 Charge Termination
n
25µA Max Supply Current in Shutdown Mode
n
2.9V Trickle Charge Threshold
n
Soft-Start Limits Inrush Current
n
Available in a 5-Lead Low Profile (1mm)
SOT-23 Package
n
Charger for Li-Ion Coin Cell Batteries
n
Portable MP3 Players, Wireless Headsets
n
Bluetooth Applications
n
Multifunction Wristwatches
90mA Li-Ion Single Coin Cell Charger
Complete Charge Cycle (130mAh Battery)
V
CC
1.69k
4.2V
COIN CELL
Li-Ion
BATTERY
4054l42 TA01
LTC4054L-4.2
1µF
V
IN
4.5V TO 6.5V
BAT
4
3
90mA
5
2
PROG
GND
TIME (HOURS)
0
CHARGE CURRENT (mA)
100
90
80
70
60
50
40
30
20
10
0
BATTERY VOLTAGE (V)
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
0.5
1.0
1.25 2.25
4054l42 TA01b
0.25 0.75
1.5
1.75
2.0
CONSTANT
CURRENT
CONSTANT
VOLTAGE
V
CC
= 5V
θ
JA
= 130°C/W
R
PROG
= 1.69k
T
A
= 25°C
LTC4054L-4.2
2
4054l42fa
pin conFiguraTionabsoluTe MaxiMuM raTings
Input Supply Voltage (V
CC
) ........................ –0.3V to 10V
PROG ...............................................–0.3V to V
CC
+ 0.3V
CHRG ......................................................... –0.3V to 10V
BAT .............................................................. –0.3V to 7V
BAT Short-Circuit Duration ........................... Continuous
BAT Pin Current .................................................. 200mA
PROG Pin Current .................................................1.5mA
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range (Note 2)....–40°C to 85°C
Storage Temperature Range .................. –65°C to 125°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
(Note 1)
CHRG 1
GND 2
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
BAT 3
5 PROG
4 V
CC
T
JMAX
= 125°C, θ
JA
= 80°C/W TO 150°C/W
DEPENDING ON PCB BOARD LAYOUT (NOTE 3)
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4054LES5-4.2#PBF LTC4054LES5-4.2#TRPBF LTA FA 5-Lead Plastic TSOT-23 –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
l
4.25 6.5 V
I
CC
Supply Current Charge Mode (Note 4), R
PROG
= 1k
Standby Mode (Charge Terminated)
Shutdown Mode (R
PROG
Not Connected,
V
CC
< V
BAT
, or V
CC
< V
UV
)
l
l
l
1200
200
25
2000
500
50
µA
µA
µA
V
FLOAT
Regulated Output (Float) Voltage 0°C ≤ T
A
≤ 85°C, I
BAT
= 40mA 4.158 4.2 4.242 V
I
BAT
BAT Pin Current R
PROG
= 15k, Current Mode
R
PROG
= 1k, Current Mode
Standby Mode, V
BAT
= 4.2V
Shutdown Mode (R
PROG
Not Connected)
Sleep Mode, V
CC
= 0V
l
l
l
9.3
142.5
0
10
150
–2.5
±1
±1
10.7
157.5
–6
±2
±2
mA
mA
µA
µA
µA
I
TRIKL
Trickle Charge Current V
BAT
< V
TRIKL
, R
PROG
= 1k (I
BAT
= 150mA)
l
5 15 25 mA
V
TRIKL
Trickle Charge Threshold Voltage R
PROG
= 15k, V
BAT
Rising 2.8 2.9 3 V
V
TRHYS
Trickle Charge Hysteresis Voltage R
PROG
= 15k 60 80 110 mV
V
UV
V
CC
Undervoltage Lockout Threshold Voltage From V
CC
Low to High
l
3.7 3.8 3.92 V
V
UVHYS
V
CC
Undervoltage Lockout Hysteresis Voltage
l
150 200 300 mV
V
MSD
Manual Shutdown Threshold Voltage PROG Pin Rising
PROG Pin Falling
l
l
1.15
0.9
1.21
1.0
1.30
1.1
V
V
V
ASD
V
CC
– V
BAT
Lockout Threshold Voltage V
CC
from Low to High
V
CC
from High to Low
70
5
100
30
140
50
mV
mV
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted.
LTC4054L-4.2
3
4054l42fa
elecTrical characTerisTics
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 LTC4054LE-4.2 is 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.
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.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
TERM
C/10 Termination Current Threshold R
PROG
= 15k (I
BAT
= 10mA) (Note 5)
R
PROG
= 1k (I
BAT
= 150mA) (Note 5)
l
l
0.085
0.088
0.10
0.10
0.115
0.112
mA/mA
mA/mA
V
PROG
PROG Pin Voltage R
PROG
= 1k, Current Mode
l
0.93 1 1.07 V
I
CHRG
CHRG Pin Weak Pull-Down Current V
CHRG
= 5V 8 20 35 µA
V
CHRG
CHRG Pin Output Low Voltage I
CHRG
= 5mA 0.35 0.6 V
∆V
RECHRG
Recharge Battery Hysteresis Voltage V
FLOAT
– V
RECHRG
100 150 200 mV
T
LIM
Junction Temperature in Constant
Temperature Mode
120 °C
R
ON
Power FET “ON” Resistance
(Between V
CC
and
BAT
)
1.5 Ω
t
SS
Soft-Start Time I
BAT
= 0 to I
BAT
=150V/R
PROG
100 µs
t
RECHARGE
Recharge Comparator Filter Time V
BAT
High to Low 0.75 2 4.5 ms
t
TERM
Termination Comparator Filter Time I
BAT
Drops Below I
CHG
/10 400 1000 2500 µs
I
PROG
PROG Pin Pull-Up Current 1.5 3 5 µA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted.
Typical perForMance characTerisTics
PROG Pin Voltage vs Supply
Voltage (Constant Current Mode)
PROG Pin Voltage vs Temperature
(Constant Current Mode)
Charge Current
vs PROG Pin Voltage
V
CC
(V)
4
V
PROG
(V)
0.9975
1.0000
1.0025
5.5
6.5
4054L G01
0.9950
0.9925
0.9900
4.5 5 6
1.0050
1.0075
1.0100
7
V
CC
= 5V
V
BAT
= 4V
T
A
= 25°C
R
PROG
= 1k
R
PROG
= 15k
TEMPERATURE (°C)
–50
V
PROG
(V)
0.9975
1.0000
1.0025
25
75
4054L G02
0.9950
0.9925
0.9900
–25 0 50
1.0050
1.0075
1.0100
100
V
CC
= 5V
V
BAT
= 4V
R
PROG
= 1k
V
PROG
(V)
0
0
I
BAT
(mA)
30
60
90
120
150
180
0.25 0.5 0.75 1
4054L G03
1.25
V
CC
= 5V
R
PROG
= 1k
T
A
= 25°C
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LTC4054LES5-4.2#TRMPBF

Mfr. #:
Buy LTC4054LES5-4.2#TRMPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Monlithic Li-Ion Charger - low current
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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