LX2205 Datasheet, PDF (1/14 Pages) Microsemi Corporation – 1A Li-Ion Battery Charger with Power Source Management

LX2205
® _{1A Li-Ion Battery Charger with Power Source Management}
TM
PRODUCTION DATA SHEET
DESCRIPTION
The LX2205 is a complete single two logically selectable levels (100mA
cell Lithium Ion or Lithium Polymer and 500mA). When powered by a USB
battery charger and power source input, the battery is charged with the
manager. In addition to battery excess USB current that is not
charging, power flow control is consumed by the system load. If the
provided from up to three sources: a load exceeds the USB current limit, the
wall adapter, a standard USB power battery will discharge to assist the USB
plug or the battery.
power source to power the load. The
The battery charge current and controller can logically suspend the
termination current are independently USB power to allow the system to
adjustable. The controller also operate from the battery without
includes status indicators which show loading the USB.
when the controller is powered by an When a wall adapter is applied, it
external adapter in addition to charge takes precedent over the USB power
in progress, and charge completed. input and disables the USB input to
The USB input is current limited at prevent current flow from the adapter to
the USB port.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Patents Pending.
KEY FEATURES
ƒ Single Cell Li-Ion Battery Charger
ƒ Power Source Management
ƒ Up to 1A Charging Current
ƒ Integrated Power MOSFET
ƒ USB Current Compliance
ƒ 25µA Quiescent Current in
Discharge Mode
ƒ Taper Current Termination
ƒ Protection features:
o USB Reverse Current Blocking
o Unsafe Battery Temp Lockout
o Internal IC Temperature Limiter
o USB Current Limiter
APPLICATIONS
ƒ Navigation Devices
ƒ Portable USB Devices
ƒ Multi-Media Player
ƒ PDA Phones
ƒ Digital Cameras
PRODUCT HIGHLIGHT
Wall Adapter
USB Power
Suspend
High/Low
Shutdown
DC OK
MDC
CMP
USB _LX2205
SYS
BAT
SUSP
UCL
SHDN
GND
CCP
CTP
CHG
DONE
CUS ^TFB
Adapter Present
System Load
Thermistor
Charge/
Discharge
Li-Ion
Copyright © 2007
Rev. 1.0a, 2007-03-02
PACKAGE ORDER INFO
T_A (°C)
-40 to 85
LQ
Plastic MLP 4 x 4mm 16 pin
RoHS Compliant / Pb-free
LX2205ILQ
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX2205ILQ-TR)
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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