lx2203 Microsemi Corporation, lx2203 Datasheet

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lx2203

Manufacturer Part Number
lx2203
Description
Li-ion Battery Charger
Manufacturer
Microsemi Corporation
Datasheet
Copyright ¤ 2004
Rev. 1.0a, 2005-08-10
charger for Lithium Ion or Lithium
Polymer
includes built in MOSFET, accurate
current and voltage regulation, reverse
blocking protection, over temperature
control, and charge status indicator.
The accurate programmable charge
current and independent termination
current programming make it easy to
logically reprogram the charge current
limit at any time.
IMPORTANT: For the most current data, consult MICROSEMI’s website:
AC/DC Adapter
The LX2203 is a tiny linear battery
ON/OFF
TM
batteries.
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
The
D E S C R I P T I O N
LX2203
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e.
LX2203CLD-TR)
-40 to 85
T
A
(qC)
two phases: constant current and
constant voltage.
conditioning mode is provided for
deeply discharged batteries.
LX2203 automatically restarts if the
battery voltage falls below the top-off
threshold. The LX2203 enters a low
quiescent current sleep mode when
power is removed.
VIN
VIN
STAT
CTP
GND
The LX2203 charges the battery in
P R O D U C T H I G H L I G H T
P A C K A G E O R D E R I N F O
LD
LX2203
Integrated Products Division
®
Microsemi
http://www.microsemi.com
10-Pin
Plastic MLP
CMP
CCP
BAT
BAT
EN
RoHS Compliant / Pb-free
A reduced current
LX2203CLD
Li-Ion Battery Charger
P
The
RODUCTION
+
EN
0
1
S Up to 1A charge current
S Low drop out design
S Reverse leakage protection
S Linear thermal control loop
S Pre-charge conditioning
S Programmable Termination
S Short Circuit protected
S Small 3x3mm MLP package
S PDAs, MP3 Players
S Cell Phones
S Charging cradles
S Digital Cameras
Current
D
Sleep mode – charge disabled
ATA
K E Y F E A T U R E S
A P P L I C A T I O N S
S
Charge enabled.
HEET
MODE
LX2203
Page 1

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lx2203 Summary of contents

Page 1

... The LX2203 is a tiny linear battery charger for Lithium Ion or Lithium Polymer batteries. The LX2203 includes built in MOSFET, accurate current and voltage regulation, reverse blocking protection, over temperature control, and charge status indicator. The accurate programmable charge ...

Page 2

... 49qC/W MBIENT Description Microsemi Integrated Products Division LX2203 Li-Ion Battery Charger RODUCTION ATA HEET VIN 1 VIN 2 STAT 3 Connect Bottom to ...

Page 3

... Logic Logic < V BAT BAT VIN V UVLO+ V UVLO- Microsemi Integrated Products Division LX2203 D S RODUCTION ATA HEET 70qC except where otherwise A LX2203 Units Min Typ Max 4. 1.25 1.25 4.16 4.2 4. 0.9 1.0 1 4.5 0.5 2.0 0.8 ...

Page 4

... 1400 1200 1000 800 600 400 200 0 Microsemi Integrated Products Division LX2203 Li-Ion Battery Charger RODUCTION ATA HEET 4.0 8.0 12.0 Iccp Current (µA) V Post Trim Bat Volt mA 16 ...

Page 5

... ENABLE UVLO CHARGE CONTROL CONSTANT VOLTAGE CONTROL TEMPERATURE CONTROL CONSTANT CURRENT CONTROL Figure 1 – Simplified Block Diagram Microsemi Integrated Products Division LX2203 D S ATA HEET STAT BAT CHARGE CTP TERMINATION CONTROL Page 5 ...

Page 6

... TM LX2203 CONTROL FLOW DIAGRAM START YES V > UVLO YES V > BAT YES NO V >60% BAT YES CONSTANT CURRENT CHARGE MODE NO 150 TEMP < YES NO V > V BAT CV YES Copyright ¤ 2004 Rev. 1.0a, 2005-08-10 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® ...

Page 7

... LX2203 STAT CMP CTP EN 2.7k CCP GND 150k 90.9k VIN BAT VIN BAT LX2203 STAT CMP CTP EN CCP GND 150k BSS138DW-7 IBAT CP1 CP2 100mA L L 500mA Microsemi Integrated Products Division LX2203 D S ATA HEET 0.01uF + 0.01uF + 243k 165k 1.21M Page 7 ...

Page 8

... It is important to provide a low thermal impedance path from the thermal pad on the bottom of the LX2203 package to the ground plane of the circuit board to maximize the heat dissipation. To minimize charge time it is best not to rely on the thermal control feature as this feature will extend the charging time when activated. Copyright ¤ ...

Page 9

... For Vcc = 3.3V and Rsw = 243k 649k 392k. These values should provide charge currents of 100mA and . 500mA C OMPENSATION CAPACITOR A compensation capacitor of value 0.01uF is required between the CMP pin and V Microsemi Integrated Products Division LX2203 Li-Ion Battery Charger RODUCTION ATA HEET CCP Vcc ...

Page 10

... MIN MAX MIN MAX A 0.80 1.00 0.0315 0.0394 A1 0 0.05 0 0.0019 A3 0.20 REF 0.0079 REF b 0.18 0.30 0.0071 0.0118 D 3.00 BSC 0.1181 BSC D2 2.23 2.48 0.0878 0.0976 e 0.50 BSC 0.0197 BSC E 3.00 BSC 0.1181 BSC E2 1.49 1.74 0.0587 0.0685 L 0.30 0.50 0.0071 0.0197 Microsemi Integrated Products Division LX2203 D S ATA HEET L Bot View D2 A3 Page 10 ...

Page 11

... Microsemi reserves the right to change the configuration and performance of the product and to discontinue product at any time. Copyright ¤ 2004 Rev. 1.0a, 2005-08-10 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Li-Ion Battery Charger ® P RODUCTION Microsemi Integrated Products Division LX2203 D S ATA HEET Page 11 ...

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