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参数资料
| 型号： | LX2208ILD-TR |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, MLPD-12 |
| 文件页数： | 1/11页 |
| 文件大小： | 250K |
| 代理商： | LX2208ILD-TR |
LX2208
PRODUCTION DATA SHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
WWW
.Microse
m
i
.CO
M
2 Amp Three Level Lithium Ion Battery Charger
TM
LL
XX
22
00
88
Copyright
2007
Rev. 1.0, 2007-04-03
DESCRIPTION
The
LX2208
is
a
single
cell
Lithium Ion or Lithium Polymer
battery charger. The controller will
charge a single cell Li-Ion battery
from either a wall adapter or a USB
power source. A low under-voltage
lockout
level
increases
usable
charging range from a current limited
power source. In addition, there is a
linear die temperature thermal control
loop, which limits the heat dissipation
while still charging the battery. There
are
three
logic
selectable
and
programmable charge current levels:
the high charge programming level is
typically set for charging from the
wall adapter, the low level charge
programming
is
typically
set
to
500mA for full USB
charging and
100mA
(20%)
for
reduced
USB
charging.
In addition to setting the high-level
charge current, the HCP programming
resistor
also
sets
the
termination
current at 10% of the constant current
level and the conditioning current at 5%
of the constant current level. Power
status indicators STAT and
OK
DC
can
be
configured
to
show
charge
in
progress, battery fully charged and
external power on. The STAT pin is
capable of sourcing or sinking 5mA.
The
OK
DC
output is an open drain
output and can sink 10mA.
The LX2208 enters a low quiescent
current shut down when power is
removed from the IN pin or when it is
logically shutdown to minimize battery
drain.
Protection features include: under
voltage
lock
out,
reverse
current
blocking on the IN pin, internal die
temperature thermal loop to reduce
charge current to maintain a safe die
temperature,
and
a
unsafe
battery
temperature
charge
inhibitor.
For
charging deeply discharged batteries,
the controller includes a conditioning
charge mode. The LX2208 comes in a
3x3mm 12 pin MLPD package.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATUR ES
Up to 2A Charging Current
Integrated Power MOSFET
Three Charge Levels for
Adapter, and USB Hi and Low
Charge Battery from a Current
Limited Adapter
0.5% Battery Voltage Accuracy
USB Current Compliance
Battery Full Indicator
CC/CV with Thermal Feedback
Battery Temperature Monitor
Precision Charge Termination
Protection features:
o
Unsafe Battery Temp Lockout
o
Internal IC Temp Regulator
o
USB Current Limiter
o
Reverse Current Blocking
o
Under Voltage Lockout
o
False Termination Prevention
under Low Supply Conditions
APPLI C ATION S
Navigation Devices
Multi-Media Players
Handheld Devices
Digital Cameras
PRODUCT H I GHLIGHT
Adapter or USB
Shutdown
Current
Programming
Status
Battery
Temperature
Lockout
Sensing
IN
BAT
SD
H/L
HCP
TMP
DC OK
STAT
GND
CMP
Battery
LCP
LX2208
USB Hi/Low
20%
Adapter or USB
Select
Charging
Full
Power On
+
-
PACKAGE ORDER INFO
LD
Plastic MLPD 3 x 3mm 12 pin
TA (°C)
RoHS Compliant / Pb-free
-40 to 85
LX2208ILD
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX2208ILD-TR)
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